[menog] Weekly Global IPv4 Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Oct 29 18:03:06 UTC 2021


This is an automated weekly mailing describing the state of the Internet
Global 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 http://thyme.rand.apnic.net.

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

Global IPv4 Routing Table Report   04:00 +10GMT Sat 30 Oct, 2021

Report Website:     http://thyme.rand.apnic.net
Detailed Analysis:  http://thyme.rand.apnic.net/current/

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

BGP routing table entries examined:                              870998
    Prefixes after maximum aggregation (per Origin AS):          330625
    Deaggregation factor:                                          2.63
    Unique aggregates announced (without unneeded subnets):      420290
Total ASes present in the Internet Routing Table:                 72185
    Prefixes per ASN:                                             12.07
Origin-only ASes present in the Internet Routing Table:           61995
Origin ASes announcing only one prefix:                           25559
Transit ASes present in the Internet Routing Table:               10190
Transit-only ASes present in the Internet Routing Table:            349
Average AS path length visible in the Internet Routing Table:       4.4
    Max AS path length visible:                                      53
    Max AS path prepend of ASN (265020)                              50
Prefixes from unregistered ASNs in the Routing Table:               906
    Number of instances of unregistered ASNs:                       910
Number of 32-bit ASNs allocated by the RIRs:                      37687
Number of 32-bit ASNs visible in the Routing Table:               31261
Prefixes from 32-bit ASNs in the Routing Table:                  146011
Number of bogon 32-bit ASNs visible in the Routing Table:            23
Special use prefixes present in the Routing Table:                    1
Prefixes being announced from unallocated address space:            412
Number of addresses announced to Internet:                   3071684096
    Equivalent to 183 /8s, 22 /16s and 46 /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:      289786

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

Prefixes being announced by APNIC Region ASes:                   232859
    Total APNIC prefixes after maximum aggregation:               66598
    APNIC Deaggregation factor:                                    3.50
Prefixes being announced from the APNIC address blocks:          228100
    Unique aggregates announced from the APNIC address blocks:    92707
APNIC Region origin ASes present in the Internet Routing Table:   12077
    APNIC Prefixes per ASN:                                       18.89
APNIC Region origin ASes announcing only one prefix:               3441
APNIC Region transit ASes present in the Internet Routing Table:   1700
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:   7251
Number of APNIC addresses announced to Internet:              772994432
    Equivalent to 46 /8s, 18 /16s and 245 /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:                    255120
    Total ARIN prefixes after maximum aggregation:               117865
    ARIN Deaggregation factor:                                     2.16
Prefixes being announced from the ARIN address blocks:           255232
    Unique aggregates announced from the ARIN address blocks:    122364
ARIN Region origin ASes present in the Internet Routing Table:    18931
    ARIN Prefixes per ASN:                                        13.48
ARIN Region origin ASes announcing only one prefix:                6851
ARIN Region transit ASes present in the Internet Routing Table:    1948
Average ARIN Region AS path length visible:                         3.8
    Max ARIN Region AS path length visible:                          28
Number of ARIN region 32-bit ASNs visible in the Routing Table:    4179
Number of ARIN addresses announced to Internet:              1301625344
    Equivalent to 77 /8s, 149 /16s and 58 /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:                    242238
    Total RIPE prefixes after maximum aggregation:               113310
    RIPE Deaggregation factor:                                     2.14
Prefixes being announced from the RIPE address blocks:           238370
    Unique aggregates announced from the RIPE address blocks:    146176
RIPE Region origin ASes present in the Internet Routing Table:    28088
    RIPE Prefixes per ASN:                                         8.49
RIPE Region origin ASes announcing only one prefix:               12093
RIPE Region transit ASes present in the Internet Routing Table:    3920
Average RIPE Region AS path length visible:                         4.4
    Max RIPE Region AS path length visible:                          38
Number of RIPE region 32-bit ASNs visible in the Routing Table:   10472
Number of RIPE addresses announced to Internet:               712202880
    Equivalent to 42 /8s, 115 /16s and 90 /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:                  113211
    Total LACNIC prefixes after maximum aggregation:              26920
    LACNIC Deaggregation factor:                                   4.21
Prefixes being announced from the LACNIC address blocks:         114105
    Unique aggregates announced from the LACNIC address blocks:   47434
LACNIC Region origin ASes present in the Internet Routing Table:  10794
    LACNIC Prefixes per ASN:                                      10.57
LACNIC Region origin ASes announcing only one prefix:              2626
LACNIC Region transit ASes present in the Internet Routing Table:  2129
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:  8463
Number of LACNIC addresses announced to Internet:             176399872
    Equivalent to 10 /8s, 131 /16s and 166 /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:                  26664
    Total AfriNIC prefixes after maximum aggregation:              5249
    AfriNIC Deaggregation factor:                                  5.08
Prefixes being announced from the AfriNIC address blocks:         34779
    Unique aggregates announced from the AfriNIC address blocks:  11255
AfriNIC Region origin ASes present in the Internet Routing Table:  1567
    AfriNIC Prefixes per ASN:                                     22.19
AfriNIC Region origin ASes announcing only one prefix:              548
AfriNIC Region transit ASes present in the Internet Routing Table:  311
Average AfriNIC Region AS path length visible:                      5.2
    Max AfriNIC Region AS path length visible:                       42
Number of AfriNIC region 32-bit ASNs visible in the Routing Table:  896
Number of AfriNIC addresses announced to Internet:            108183808
    Equivalent to 6 /8s, 114 /16s and 193 /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        8221       9000      57  CMNET-GD Guangdong Mobile Communication
  7545        5844        787     684  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4663       4192      74  ERX-CERNET-BKB China Education and Rese
  7552        3590       1330      19  VIETEL-AS-AP Viettel Group, VN
  7713        3499       1023      57  TELKOMNET-AS-AP PT Telekomunikasi Indon
 45899        3058       1896      54  VNPT-AS-VN VNPT Corp, VN
  4766        2508      11119     578  KIXS-AS-KR Korea Telecom, KR
  9498        2165        472     236  BBIL-AP BHARTI Airtel Ltd., IN
 45090        2126       1198      75  CNNIC-TENCENT-NET-AP Shenzhen Tencent C
  4755        2124        429     203  TATACOMM-AS TATA Communications formerl

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

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

   ASN  No of nets  /20 equiv  MaxAgg  Description
 16509        5823       9989    2548  AMAZON-02, US
 11492        4643        307     802  CABLEONE, US
 22773        4060       3053     371  ASN-CXA-ALL-CCI-22773-RDC, US
  7155        3954        264      30  VIASAT-SP-BACKBONE, US
 16625        3650       1886    2544  AKAMAI-AS, US
  6327        3373       1318      69  SHAW, CA
   749        2876      50735    2132  DNIC-AS-00749, US
 30036        2594        375     164  MEDIACOM-ENTERPRISE-BUSINESS, US
   209        2522       5028     444  CENTURYLINK-US-LEGACY-QWEST, US
  7018        2246      24165    1432  ATT-INTERNET4, US

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

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

   ASN  No of nets  /20 equiv  MaxAgg  Description
 12479        6877       1726     143  UNI2-AS, ES
 20940        3912       3348     213  AKAMAI-ASN1, NL
  8551        3289        378      39  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 39891        3271        187      23  ALJAWWALSTC-AS, SA
 12389        2934       2283     898  ROSTELECOM-AS, RU
  9009        2504        259    1321  M247, GB
 34984        2238        358     602  TELLCOM-AS, TR
 58224        1696        903     577  TCI, IR
 61317        1683        224     938  ASDETUK www.heficed.com, GB
 13188        1610        100      27  TRIOLAN, UA

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

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

   ASN  No of nets  /20 equiv  MaxAgg  Description
  8151       10584       3461     577  Uninet S.A. de C.V., MX
 10620        3249        492     818  Telmex Colombia S.A., CO
 11830        2469        369      62  Instituto Costarricense de Electricidad
 13999        1634        288     453  Mega Cable, S.A. de C.V., MX
  6503        1526        359     473  Axtel, S.A.B. de C.V., MX
 28573        1446       2310     256  CLARO S.A., BR
  3816        1240        651     153  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
 26615        1132       2351     137  TIM SA, BR
  6147        1098        369      22  Telefonica del Peru S.A.A., PE
 11664         958        187     441  Techtel LMDS Comunicaciones Interactiva

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

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

   ASN  No of nets  /20 equiv  MaxAgg  Description
 24863        1605        393      21  LINKdotNET-AS, EG
 24835        1552        503      33  RAYA-AS, EG
 36992        1272       1414     268  ETISALAT-MISR, EG
 36903        1183        537     110  MT-MPLS, MA
 29571         812         68      11  ORANGE-COTE-IVOIRE, CI
 36935         670        523      44  Vodafone-, EG
  6713         611       1863      34  IAM-AS, MA
 15399         514         50      31  WANANCHI-, KE
 37342         470         32       1  MOVITEL, MZ
  2018         342        319      73  TENET-1, ZA

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

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

   ASN  No of nets  /20 equiv  MaxAgg  Description
  8151       10584       3461     577  Uninet S.A. de C.V., MX
  9808        8221       9000      57  CMNET-GD Guangdong Mobile Communication
 12479        6877       1726     143  UNI2-AS, ES
  7545        5844        787     684  TPG-INTERNET-AP TPG Telecom Limited, AU
 16509        5823       9989    2548  AMAZON-02, US
  4538        4663       4192      74  ERX-CERNET-BKB China Education and Rese
 11492        4643        307     802  CABLEONE, US
 22773        4060       3053     371  ASN-CXA-ALL-CCI-22773-RDC, US
  7155        3954        264      30  VIASAT-SP-BACKBONE, US
 20940        3912       3348     213  AKAMAI-ASN1, NL

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

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

   ASN  No of nets  Net Savings  Description
  9808        8221         8164  CMNET-GD Guangdong Mobile Communication Co.Ltd.
 12479        6877         6734  UNI2-AS, ES
  7545        5844         5160  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4663         4589  ERX-CERNET-BKB China Education and Research Net
  7155        3954         3924  VIASAT-SP-BACKBONE, US
 11492        4643         3841  CABLEONE, US
 20940        3912         3699  AKAMAI-ASN1, NL
 22773        4060         3689  ASN-CXA-ALL-CCI-22773-RDC, US
  7552        3590         3571  VIETEL-AS-AP Viettel Group, VN
  7713        3499         3442  TELKOMNET-AS-AP PT Telekomunikasi Indonesia, ID

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

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

    Bad AS  Designation  Net Originated      Transit AS  Transit AS Name
    398418  UNALLOCATED  8.2.200.0/24              2914  NTT-COMMUNICATIONS-2914, US
     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

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

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

Unassigned Network     ASN Information  AS Name
23.132.208.0/24      Origin:      7850  CITYLINKFIBER, US
23.132.208.0/24     Transit:     15164  UPNLLC, US
23.141.0.0/24        Origin:    395350  UNASSIGNED
23.141.0.0/24       Transit:     11426  TWC-11426-CAROLINAS, US
27.100.7.0/24        Origin:     56096  UNASSIGNED
27.100.7.0/24       Transit:     45455  TH-2S1N-AP Two S One N Co Ltd, Internet 
41.57.124.0/22       Origin:     37442  UNASSIGNED
41.57.124.0/22      Transit:       174  COGENT-174, US
41.57.124.0/23       Origin:     37442  UNASSIGNED
41.57.124.0/23      Transit:     37204  TELONE, ZW

Complete listing at http://thyme.rand.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      /11:99      /12:300     
/13:597     /14:1214    /15:2047    /16:13590   /17:8320    /18:14037   
/19:25517   /20:43160   /21:51181   /22:107432  /23:93998   /24:507983  
/25:1453    /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        5840        6877  UNI2-AS, ES
  8151        4384       10584  Uninet S.A. de C.V., MX
 11492        3597        4643  CABLEONE, US
  6327        3181        3373  SHAW, CA
  7155        3044        3954  VIASAT-SP-BACKBONE, US
 22773        3008        4060  ASN-CXA-ALL-CCI-22773-RDC, US
 39891        2807        3271  ALJAWWALSTC-AS, SA
  8551        2754        3289  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
 30036        2247        2594  MEDIACOM-ENTERPRISE-BUSINESS, US
 11830        1921        2469  Instituto Costarricense de Electricidad y Telec

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

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

   1:1922      2:1056      3:145       4:19        5:3660      6:100    
   7:5         8:1554      9:1        11:172      12:1712     13:404    
  14:2292     15:119      16:25       17:371      18:123      20:130    
  21:4        22:188      23:5250     24:2406     25:2        27:2549   
  29:19       31:2375     32:106      34:1        35:47       36:1725   
  37:3910     38:2339     39:611      40:149      41:3820     42:1037   
  43:2072     44:290      45:15564    46:3727     47:321      49:1677   
  50:1850     51:100      52:1308     54:284      55:739      56:4      
  57:55       58:1741     59:1185     60:935      61:2340     62:2345   
  63:1958     64:5421     65:2355     66:4939     67:2874     68:1168   
  69:4102     70:1354     71:678      72:3155     74:2627     75:1496   
  76:699      77:2061     78:1736     79:2589     80:1864     81:1514   
  82:1379     83:1173     84:1296     85:2815     86:713      87:1870   
  88:982      89:3094     90:497      91:7440     92:1835     93:2570   
  94:3158     95:3568     96:1301     97:348      98:977      99:933    
 100:75      101:1035    102:1750    103:27310   104:4062    105:437    
 106:829     107:2391    108:739     109:3916    110:2048    111:3130   
 112:1964    113:1413    114:1507    115:1921    116:1894    117:2421   
 118:2328    119:1885    120:1610    121:1084    122:2536    123:2130   
 124:1596    125:2063    128:1396    129:1104    130:910     131:2054   
 132:745     133:364     134:1888    135:319     136:792     137:865    
 138:2413    139:1208    140:828     141:1290    142:1218    143:1381   
 144:1273    145:327     146:1567    147:1460    148:2221    149:1582   
 150:833     151:1091    152:1657    153:434     154:3207    155:1354   
 156:1802    157:1180    158:982     159:2045    160:2311    161:1258   
 162:3357    163:1108    164:1656    165:1474    166:604     167:1652   
 168:3652    169:679     170:4344    171:804     172:2776    173:3006   
 174:1005    175:1125    176:3372    177:4498    178:3017    179:1931   
 180:2262    181:2611    182:3139    183:2019    184:2417    185:18965  
 186:4207    187:3489    188:3580    189:3080    190:8649    191:1305   
 192:10959   193:8408    194:6849    195:4882    196:2876    197:2181   
 198:6084    199:5981    200:7382    201:5623    202:10522   203:10023  
 204:4530    205:3384    206:3798    207:3374    208:4005    209:4726   
 210:4217    211:2434    212:3747    213:3389    214:1155    215:64     
 216:6385    217:2623    218:1230    219:647     220:1955    221:975    
 222:852     223:2083   

End of report


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