[menog] Weekly Global IPv4 Routing Table Report

Routing Table Analysis Role Account cscora at apnic.net
Fri Nov 19 18:02:49 UTC 2021


This is an automated weekly mailing describing the state of the Gobal
IPv4 Routing Table  as seen from APNIC's router in Japan.

The posting is sent to APOPS, NANOG, AfNOG, SANOG, PacNOG, SAFNOG
TZNOG, MENOG, BJNOG, SDNOG, CMNOG, LACNOG and the RIPE Routing WG.

Daily listings are sent to bgp-stats at lists.apnic.net

For historical data, please see https://thyme.apnic.net.

If you have any comments please contact Philip Smith <pfsinoz at gmail.com>.

Global IPv4 Routing Table Report   04:00 +10GMT Sat 20 Nov, 2021

  BGP Table  as seen in Japan.

Report Website:     https://thyme.apnic.net
Detailed Analysis:  https://thyme.apnic.net/current/

Analysis Summary
----------------

BGP routing table entries examined:                              872856
    Prefixes after maximum aggregation (per Origin AS):          330492
    Deaggregation factor:                                          2.64
    Unique aggregates announced (without unneeded subnets):      421731
    Number of IPv4 prefixes with ROAs (including AS0):           246471
Total ASes present in the Internet Routing Table:                 72340
    Prefixes per ASN:                                             12.07
Origin-only ASes present in the Internet Routing Table:           62111
Origin ASes announcing only one prefix:                           25668
Transit ASes present in the Internet Routing Table:               10229
Transit-only ASes present in the Internet Routing Table:            352
Average AS path length visible in the Internet Routing Table:       4.3
    Max AS path length visible:                                      53
    Max AS path prepend of ASN (265020)                              50
Prefixes from unregistered ASNs in the Routing Table:               878
    Number of instances of unregistered ASNs:                       882
Number of 32-bit ASNs allocated by the RIRs:                      37870
Number of 32-bit ASNs visible in the Routing Table:               31435
Prefixes from 32-bit ASNs in the Routing Table:                  145259
Number of bogon 32-bit ASNs visible in the Routing Table:            24
Special use prefixes present in the Routing Table:                    1
Prefixes being announced from unallocated address space:            465
Number of addresses announced to Internet:                   3072198144
    Equivalent to 183 /8s, 30 /16s and 6 /24s
    Percentage of available address space announced:               83.0
    Percentage of allocated address space announced:               83.0
    Percentage of available address space allocated:              100.0
    Percentage of address space in use by end-sites:               99.5
Total number of prefixes smaller than registry allocations:      291082

APNIC Region Analysis Summary
-----------------------------

Prefixes being announced by APNIC Region ASes:                   232212
    Total APNIC prefixes after maximum aggregation:               65445
    APNIC Deaggregation factor:                                    3.55
Prefixes being announced from the APNIC address blocks:          227157
    Unique aggregates announced from the APNIC address blocks:    92991
APNIC Region origin ASes present in the Internet Routing Table:   12127
    APNIC Prefixes per ASN:                                       18.73
APNIC Region origin ASes announcing only one prefix:               3474
APNIC Region transit ASes present in the Internet Routing Table:   1708
Average APNIC Region AS path length visible:                        4.5
    Max APNIC Region AS path length visible:                         37
Number of APNIC region 32-bit ASNs visible in the Routing Table:   7303
Number of APNIC addresses announced to Internet:              773359744
    Equivalent to 46 /8s, 24 /16s and 136 /24s
APNIC AS Blocks        4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations)  23552-24575, 37888-38911, 45056-46079, 55296-56319,
                       58368-59391, 63488-64098, 64297-64395, 131072-151865
APNIC Address Blocks     1/8,  14/8,  27/8,  36/8,  39/8,  42/8,  43/8,
                        49/8,  58/8,  59/8,  60/8,  61/8, 101/8, 103/8,
                       106/8, 110/8, 111/8, 112/8, 113/8, 114/8, 115/8,
                       116/8, 117/8, 118/8, 119/8, 120/8, 121/8, 122/8,
                       123/8, 124/8, 125/8, 126/8, 133/8, 150/8, 153/8,
                       163/8, 171/8, 175/8, 180/8, 182/8, 183/8, 202/8,
                       203/8, 210/8, 211/8, 218/8, 219/8, 220/8, 221/8,
                       222/8, 223/8,

ARIN Region Analysis Summary
----------------------------

Prefixes being announced by ARIN Region ASes:                    255961
    Total ARIN prefixes after maximum aggregation:               118338
    ARIN Deaggregation factor:                                     2.16
Prefixes being announced from the ARIN address blocks:           256057
    Unique aggregates announced from the ARIN address blocks:    122695
ARIN Region origin ASes present in the Internet Routing Table:    18942
    ARIN Prefixes per ASN:                                        13.52
ARIN Region origin ASes announcing only one prefix:                6861
ARIN Region transit ASes present in the Internet Routing Table:    1958
Average ARIN Region AS path length visible:                         3.8
    Max ARIN Region AS path length visible:                          35
Number of ARIN region 32-bit ASNs visible in the Routing Table:    4218
Number of ARIN addresses announced to Internet:              1301555200
    Equivalent to 77 /8s, 148 /16s and 40 /24s
ARIN AS Blocks         1-1876, 1902-2042, 2044-2046, 2048-2106
(pre-ERX allocations)  2138-2584, 2615-2772, 2823-2829, 2880-3153
                       3354-4607, 4865-5119, 5632-6655, 6912-7466
                       7723-8191, 10240-12287, 13312-15359, 16384-17407
                       18432-20479, 21504-23551, 25600-26591,
                       26624-27647, 29696-30719, 31744-33791
                       35840-36863, 39936-40959, 46080-47103
                       53248-55295, 62464-63487, 64198-64296, 393216-401308
ARIN Address Blocks      3/8,   4/8,   6/8,   7/8,   8/8,   9/8,  11/8,
                        12/8,  13/8,  15/8,  16/8,  17/8,  18/8,  19/8,
                        20/8,  21/8,  22/8,  23/8,  24/8,  26/8,  28/8,
                        29/8,  30/8,  32/8,  33/8,  34/8,  35/8,  38/8,
                        40/8,  44/8,  47/8,  48/8,  50/8,  52/8,  53/8,
                        54/8,  55/8,  56/8,  57/8,  63/8,  64/8,  65/8,
                        66/8,  67/8,  68/8,  69/8,  70/8,  71/8,  72/8,
                        73/8,  74/8,  75/8,  76/8,  96/8,  97/8,  98/8,
                        99/8, 100/8, 104/8, 107/8, 108/8, 128/8, 129/8,
                       130/8, 131/8, 132/8, 134/8, 135/8, 136/8, 137/8,
                       138/8, 139/8, 140/8, 142/8, 143/8, 144/8, 146/8,
                       147/8, 148/8, 149/8, 152/8, 155/8, 156/8, 157/8,
                       158/8, 159/8, 160/8, 161/8, 162/8, 164/8, 165/8,
                       166/8, 167/8, 168/8, 169/8, 170/8, 172/8, 173/8,
                       174/8, 184/8, 192/8, 198/8, 199/8, 204/8, 205/8,
                       206/8, 207/8, 208/8, 209/8, 214/8, 215/8, 216/8,
                      

RIPE Region Analysis Summary
----------------------------

Prefixes being announced by RIPE Region ASes:                    243315
    Total RIPE prefixes after maximum aggregation:               113789
    RIPE Deaggregation factor:                                     2.14
Prefixes being announced from the RIPE address blocks:           239527
    Unique aggregates announced from the RIPE address blocks:    146747
RIPE Region origin ASes present in the Internet Routing Table:    28151
    RIPE Prefixes per ASN:                                         8.51
RIPE Region origin ASes announcing only one prefix:               12149
RIPE Region transit ASes present in the Internet Routing Table:    3930
Average RIPE Region AS path length visible:                         4.3
    Max RIPE Region AS path length visible:                          33
Number of RIPE region 32-bit ASNs visible in the Routing Table:   10536
Number of RIPE addresses announced to Internet:               712340352
    Equivalent to 42 /8s, 117 /16s and 115 /24s
RIPE AS Blocks         1877-1901, 2043, 2047, 2107-2136, 2585-2614
(pre-ERX allocations)  2773-2822, 2830-2879, 3154-3353, 5377-5631
                       6656-6911, 8192-9215, 12288-13311, 15360-16383
                       20480-21503, 24576-25599, 28672-29695
                       30720-31743, 33792-35839, 38912-39935
                       40960-45055, 47104-52223, 56320-58367
                       59392-61439, 61952-62463, 64396-64495
                       196608-213403
RIPE Address Blocks      2/8,   5/8,  25/8,  31/8,  37/8,  46/8,  51/8,
                        62/8,  77/8,  78/8,  79/8,  80/8,  81/8,  82/8,
                        83/8,  84/8,  85/8,  86/8,  87/8,  88/8,  89/8,
                        90/8,  91/8,  92/8,  93/8,  94/8,  95/8, 109/8,
                       141/8, 145/8, 151/8, 176/8, 178/8, 185/8, 188/8,
                       193/8, 194/8, 195/8, 212/8, 213/8, 217/8,

LACNIC Region Analysis Summary
------------------------------

Prefixes being announced by LACNIC Region ASes:                  113589
    Total LACNIC prefixes after maximum aggregation:              26963
    LACNIC Deaggregation factor:                                   4.21
Prefixes being announced from the LACNIC address blocks:         114475
    Unique aggregates announced from the LACNIC address blocks:   47550
LACNIC Region origin ASes present in the Internet Routing Table:  10803
    LACNIC Prefixes per ASN:                                      10.60
LACNIC Region origin ASes announcing only one prefix:              2630
LACNIC Region transit ASes present in the Internet Routing Table:  2138
Average LACNIC Region AS path length visible:                       5.0
    Max LACNIC Region AS path length visible:                        53
Number of LACNIC region 32-bit ASNs visible in the Routing Table:  8474
Number of LACNIC addresses announced to Internet:             176342528
    Equivalent to 10 /8s, 130 /16s and 198 /24s
LACNIC AS Blocks       26592-26623, 27648-28671, 52224-53247,
                       61440-61951, 64099-64197, 262144-272796 + ERX transfers
LACNIC Address Blocks  177/8, 179/8, 181/8, 186/8, 187/8, 189/8, 190/8,
                       191/8, 200/8, 201/8,

AfriNIC Region Analysis Summary
-------------------------------

Prefixes being announced by AfriNIC Region ASes:                  26901
    Total AfriNIC prefixes after maximum aggregation:              5279
    AfriNIC Deaggregation factor:                                  5.10
Prefixes being announced from the AfriNIC address blocks:         35175
    Unique aggregates announced from the AfriNIC address blocks:  11337
AfriNIC Region origin ASes present in the Internet Routing Table:  1578
    AfriNIC Prefixes per ASN:                                     22.29
AfriNIC Region origin ASes announcing only one prefix:              554
AfriNIC Region transit ASes present in the Internet Routing Table:  312
Average AfriNIC Region AS path length visible:                      5.1
    Max AfriNIC Region AS path length visible:                       25
Number of AfriNIC region 32-bit ASNs visible in the Routing Table:  904
Number of AfriNIC addresses announced to Internet:            108325632
    Equivalent to 6 /8s, 116 /16s and 235 /24s
AfriNIC AS Blocks      36864-37887, 327680-329727 & ERX transfers
AfriNIC Address Blocks  41/8,  45/8, 102/8, 105/8, 154/8, 196/8, 197/8,
                      


APNIC Region per AS prefix count summary
----------------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
  9808        8716       9000      57  CHINAMOBILE-CN China Mobile Communicati
  7545        5861        787     684  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4665       4192      74  ERX-CERNET-BKB China Education and Rese
  7552        3593       1330      20  VIETEL-AS-AP Viettel Group, VN
  7713        3500       1023      57  TELKOMNET-AS-AP PT Telekomunikasi Indon
 45899        3219       1896      54  VNPT-AS-VN VNPT Corp, VN
  4766        2506      11119     578  KIXS-AS-KR Korea Telecom, KR
  9498        2174        475     235  BBIL-AP BHARTI Airtel Ltd., IN
 45090        2135       1198      75  TENCENT-NET-AP Shenzhen Tencent Compute
  4755        2120        429     202  TATACOMM-AS TATA Communications formerl

Complete listing at https://thyme.apnic.net/current/data-ASnet-APNIC

ARIN Region per AS prefix count summary
---------------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
 16509        5961      10006    2562  AMAZON-02, US
 11492        4605        305     827  CABLEONE, US
 22773        4047       3049     381  ASN-CXA-ALL-CCI-22773-RDC, US
  7155        3950        264      30  VIASAT-SP-BACKBONE, US
 16625        3685       1899    2560  AKAMAI-AS, US
  6327        3389       1318      65  SHAW, CA
   749        2890      50784    2146  DNIC-AS-00749, US
 30036        2596        373     162  MEDIACOM-ENTERPRISE-BUSINESS, US
   209        2523       5027     439  CENTURYLINK-US-LEGACY-QWEST, US
  7018        2247      24164    1436  ATT-INTERNET4, US

Complete listing at https://thyme.apnic.net/current/data-ASnet-ARIN

RIPE Region per AS prefix count summary
---------------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
 12479        6875       1711     149  UNI2-AS, ES
 20940        3918       3348     218  AKAMAI-ASN1, NL
  8551        3369        378      39  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 39891        3271        187      23  ALJAWWALSTC-AS, SA
 12389        2932       2279     898  ROSTELECOM-AS, RU
  9009        2513        258    1322  M247, GB
 34984        2201        354     600  TELLCOM-AS, TR
 58224        1751        915     592  TCI, IR
 61317        1645        215     927  ASDETUK www.heficed.com, GB
 13188        1610        100      27  TRIOLAN, UA

Complete listing at https://thyme.apnic.net/current/data-ASnet-RIPE

LACNIC Region per AS prefix count summary
-----------------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
  8151       10625       3450     577  Uninet S.A. de C.V., MX
 10620        3248        490     830  Telmex Colombia S.A., CO
 11830        2465        369      62  Instituto Costarricense de Electricidad
 13999        1643        287     456  Mega Cable, S.A. de C.V., MX
  6503        1514        358     470  Axtel, S.A.B. de C.V., MX
 28573        1378       2312     256  CLARO S.A., BR
  3816        1240        651     153  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
 26615        1136       2351     138  TIM SA, BR
  6147        1098        369      21  Telefonica del Peru S.A.A., PE
 11664         971        188     444  Techtel LMDS Comunicaciones Interactiva

Complete listing at https://thyme.apnic.net/current/data-ASnet-LACNIC

AfriNIC Region per AS prefix count summary
------------------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
 24863        1637        393      21  LINKdotNET-AS, EG
 24835        1553        507      33  RAYA-AS, EG
 36992        1285       1430     270  ETISALAT-MISR, EG
 36903        1183        537     110  MT-MPLS, MA
 36935         703        523      44  Vodafone-, EG
 29571         667         68      11  ORANGE-COTE-IVOIRE, CI
  6713         612       1863      34  IAM-AS, MA
 15399         517         50      31  WANANCHI-, KE
 37342         470         32       1  MOVITEL, MZ
 23889         429        232      16  MauritiusTelecom, MU

Complete listing at https://thyme.apnic.net/current/data-ASnet-AFRINIC

Global Per AS prefix count summary
----------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
  8151       10625       3450     577  Uninet S.A. de C.V., MX
  9808        8716       9000      57  CHINAMOBILE-CN China Mobile Communicati
 12479        6875       1711     149  UNI2-AS, ES
 16509        5961      10006    2562  AMAZON-02, US
  7545        5861        787     684  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4665       4192      74  ERX-CERNET-BKB China Education and Rese
 11492        4605        305     827  CABLEONE, US
 22773        4047       3049     381  ASN-CXA-ALL-CCI-22773-RDC, US
  7155        3950        264      30  VIASAT-SP-BACKBONE, US
 20940        3918       3348     218  AKAMAI-ASN1, NL

Complete listing at https://thyme.apnic.net/current/data-ASnet

Global Per AS Maximum Aggregation summary
-----------------------------------------

   ASN  No of nets  Net Savings  Description
  9808        8716         8659  CHINAMOBILE-CN China Mobile Communications Grou
 12479        6875         6726  UNI2-AS, ES
  7545        5861         5177  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4665         4591  ERX-CERNET-BKB China Education and Research Net
  7155        3950         3920  VIASAT-SP-BACKBONE, US
 11492        4605         3778  CABLEONE, US
 20940        3918         3700  AKAMAI-ASN1, NL
 22773        4047         3666  ASN-CXA-ALL-CCI-22773-RDC, US
  7552        3593         3573  VIETEL-AS-AP Viettel Group, VN
  7713        3500         3443  TELKOMNET-AS-AP PT Telekomunikasi Indonesia, ID

Complete listing at https://thyme.apnic.net/current/data-CIDRnet

List of Unregistered Origin ASNs (Global)
-----------------------------------------

    Bad AS  Designation  Net Originated      Transit AS  Transit AS Name
     46990  UNALLOCATED  8.5.242.0/23              3356  LEVEL3, US
     62828  UNALLOCATED  8.21.130.0/24             3356  LEVEL3, US
    393266  UNALLOCATED  8.23.52.0/24             46887  LIGHTOWER, US
     18604  UNALLOCATED  8.25.204.0/24             3356  LEVEL3, US
    394936  UNALLOCATED  8.33.224.0/24              174  COGENT-174, US
     54338  UNALLOCATED  8.33.241.0/24             6461  ZAYO-6461, US
     23061  UNALLOCATED  8.39.119.0/24             3356  LEVEL3, US
      1782  UNALLOCATED  8.42.19.0/24             46887  LIGHTOWER, US
    395438  UNALLOCATED  8.42.206.0/24             3356  LEVEL3, US
    395056  UNALLOCATED  8.45.133.0/24             3356  LEVEL3, US

Complete listing at https://thyme.apnic.net/current/data-badAS

Prefixes from private and non-routed address space (Global)
-----------------------------------------------------------

Prefix                Origin AS  Description
192.88.99.0/24             6939  HURRICANE, US

Complete listing at https://thyme.apnic.net/current/data-dsua

Advertised Unallocated Addresses
--------------------------------

Unassigned Network     ASN Information  AS Name
23.141.0.0/24        Origin:    395350  UNASSIGNED
23.141.0.0/24       Transit:     11426  TWC-11426-CAROLINAS, US
23.252.160.0/24      Origin:    398968  GROUP-IID-01, US
23.252.160.0/24     Transit:      1299  TWELVE99 Twelve99, Telia Carrier, SE
23.252.161.0/24      Origin:    398968  GROUP-IID-01, US
23.252.161.0/24     Transit:      1299  TWELVE99 Twelve99, Telia Carrier, SE
23.252.162.0/24      Origin:    398968  GROUP-IID-01, US
23.252.162.0/24     Transit:      1299  TWELVE99 Twelve99, Telia Carrier, SE
23.252.163.0/24      Origin:    398968  GROUP-IID-01, US
23.252.163.0/24     Transit:      1299  TWELVE99 Twelve99, Telia Carrier, SE

Complete listing at https://thyme.apnic.net/current/data-add-IANA

Number of prefixes announced per prefix length (Global)
-------------------------------------------------------

 /1:0        /2:0        /3:0        /4:0        /5:0        /6:0       
 /7:0        /8:16       /9:13      /10:41      /11:101     /12:304     
/13:597     /14:1214    /15:2045    /16:13563   /17:8266    /18:13913   
/19:25301   /20:43165   /21:51015   /22:107589  /23:94089   /24:510337  
/25:1287    /26:0       /27:0       /28:0       /29:0       /30:0       
/31:0       /32:0       

Advertised prefixes smaller than registry allocations
-----------------------------------------------------

   ASN  No of nets  Total ann.  Description
 12479        5829        6875  UNI2-AS, ES
  8151        4426       10625  Uninet S.A. de C.V., MX
 11492        3558        4605  CABLEONE, US
  6327        3197        3389  SHAW, CA
  7155        3040        3950  VIASAT-SP-BACKBONE, US
 22773        3009        4047  ASN-CXA-ALL-CCI-22773-RDC, US
  8551        2834        3369  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
 39891        2807        3271  ALJAWWALSTC-AS, SA
 30036        2252        2596  MEDIACOM-ENTERPRISE-BUSINESS, US
 11830        1917        2465  Instituto Costarricense de Electricidad y Telec

Complete listing at https://thyme.apnic.net/current/data-sXXas-nos

Number of /24s announced per /8 block (Global)
----------------------------------------------

   1:1916      2:1033      3:144       4:18        5:3694      6:100    
   7:5         8:1548      9:1        11:172      12:1712     13:407    
  14:2290     15:125      16:32       17:374      18:129      20:143    
  21:4        22:188      23:5306     24:2368     25:4        27:2552   
  29:19       31:2377     32:106      34:1        35:48       36:1723   
  37:3916     38:2361     39:656      40:149      41:3868     42:1045   
  43:2091     44:295      45:15701    46:3784     47:323      49:1679   
  50:1876     51:103      52:1346     54:288      55:653      56:4      
  57:55       58:1741     59:1151     60:939      61:2276     62:2404   
  63:1946     64:5404     65:2347     66:4952     67:2896     68:1176   
  69:4126     70:1348     71:679      72:3091     74:2614     75:1502   
  76:710      77:2208     78:1744     79:2694     80:1870     81:1523   
  82:1413     83:1172     84:1303     85:2830     86:700      87:1883   
  88:975      89:3172     90:493      91:7482     92:1902     93:2570   
  94:3219     95:3585     96:1299     97:347      98:980      99:911    
 100:76      101:1047    102:1770    103:27489   104:4101    105:436    
 106:844     107:2391    108:750     109:3916    110:2062    111:3150   
 112:1956    113:1548    114:1540    115:1933    116:1894    117:2436   
 118:2314    119:1867    120:1619    121:1071    122:2536    123:2136   
 124:1601    125:2065    128:1392    129:1112    130:915     131:2061   
 132:751     133:366     134:1913    135:284     136:775     137:861    
 138:2441    139:1217    140:838     141:1318    142:1224    143:1358   
 144:1265    145:330     146:1641    147:1462    148:2236    149:1588   
 150:850     151:1080    152:1651    153:440     154:3353    155:1363   
 156:1834    157:1192    158:987     159:2010    160:2233    161:1274   
 162:3403    163:1165    164:1654    165:1498    166:602     167:1667   
 168:3641    169:675     170:4279    171:802     172:2834    173:3042   
 174:1004    175:1114    176:3432    177:4464    178:3014    179:1950   
 180:2263    181:2623    182:3163    183:1981    184:2411    185:19016  
 186:4229    187:3518    188:3623    189:3085    190:8745    191:1329   
 192:10990   193:8425    194:6873    195:4911    196:2884    197:2237   
 198:6021    199:6006    200:7416    201:5671    202:10520   203:10046  
 204:4489    205:3400    206:3832    207:3391    208:4013    209:4613   
 210:4234    211:2442    212:3827    213:3378    214:1166    215:64     
 216:6377    217:2625    218:1223    219:639     220:1955    221:987    
 222:852     223:2132   

End of report


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