[menog] Weekly Global IPv4 Routing Table Report

Routing Table Analysis Role Account cscora at apnic.net
Fri Jan 21 18:02:54 UTC 2022


This is an automated weekly mailing describing the state of the 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 https://thyme.apnic.net.

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

IPv4 Routing Table Report   04:00 +10GMT Sat 22 Jan, 2022

  BGP Table (Global) as seen in Japan.

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

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

BGP routing table entries examined:                              885752
    Prefixes after maximum aggregation (per Origin AS):          333488
    Deaggregation factor:                                          2.66
    Unique aggregates announced (without unneeded subnets):      426024
Total ASes present in the Internet Routing Table:                 72653
    Prefixes per ASN:                                             12.19
Origin-only ASes present in the Internet Routing Table:           62334
Origin ASes announcing only one prefix:                           25693
Transit ASes present in the Internet Routing Table:               10319
Transit-only ASes present in the Internet Routing Table:            372
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:               939
    Number of instances of unregistered ASNs:                       942
Number of 32-bit ASNs allocated by the RIRs:                      38352
Number of 32-bit ASNs visible in the Routing Table:               31906
Prefixes from 32-bit ASNs in the Routing Table:                  148241
Number of bogon 32-bit ASNs visible in the Routing Table:            19
Special use prefixes present in the Routing Table:                    1
Prefixes being announced from unallocated address space:            561
Number of addresses announced to Internet:                   3068458368
    Equivalent to 182 /8s, 228 /16s and 245 /24s
    Percentage of available address space announced:               82.9
    Percentage of allocated address space announced:               82.9
    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:      299794

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

Prefixes being announced by APNIC Region ASes:                   232989
    Total APNIC prefixes after maximum aggregation:               65532
    APNIC Deaggregation factor:                                    3.56
Prefixes being announced from the APNIC address blocks:          227780
    Unique aggregates announced from the APNIC address blocks:    93796
APNIC Region origin ASes present in the Internet Routing Table:   12276
    APNIC Prefixes per ASN:                                       18.55
APNIC Region origin ASes announcing only one prefix:               3498
APNIC Region transit ASes present in the Internet Routing Table:   1713
Average APNIC Region AS path length visible:                        4.6
    Max APNIC Region AS path length visible:                         29
Number of APNIC region 32-bit ASNs visible in the Routing Table:   7464
Number of APNIC addresses announced to Internet:              773643392
    Equivalent to 46 /8s, 28 /16s and 220 /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:                    257662
    Total ARIN prefixes after maximum aggregation:               118661
    ARIN Deaggregation factor:                                     2.17
Prefixes being announced from the ARIN address blocks:           257658
    Unique aggregates announced from the ARIN address blocks:    123069
ARIN Region origin ASes present in the Internet Routing Table:    18939
    ARIN Prefixes per ASN:                                        13.60
ARIN Region origin ASes announcing only one prefix:                6859
ARIN Region transit ASes present in the Internet Routing Table:    1951
Average ARIN Region AS path length visible:                         3.8
    Max ARIN Region AS path length visible:                          34
Number of ARIN region 32-bit ASNs visible in the Routing Table:    4303
Number of ARIN addresses announced to Internet:              1296416768
    Equivalent to 77 /8s, 69 /16s and 192 /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:                    252589
    Total RIPE prefixes after maximum aggregation:               115973
    RIPE Deaggregation factor:                                     2.18
Prefixes being announced from the RIPE address blocks:           248974
    Unique aggregates announced from the RIPE address blocks:    148374
RIPE Region origin ASes present in the Internet Routing Table:    28166
    RIPE Prefixes per ASN:                                         8.84
RIPE Region origin ASes announcing only one prefix:               12127
RIPE Region transit ASes present in the Internet Routing Table:    3965
Average RIPE Region AS path length visible:                         4.3
    Max RIPE Region AS path length visible:                          32
Number of RIPE region 32-bit ASNs visible in the Routing Table:   10610
Number of RIPE addresses announced to Internet:               713475712
    Equivalent to 42 /8s, 134 /16s and 198 /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:                  114174
    Total LACNIC prefixes after maximum aggregation:              27291
    LACNIC Deaggregation factor:                                   4.18
Prefixes being announced from the LACNIC address blocks:         114934
    Unique aggregates announced from the LACNIC address blocks:   48424
LACNIC Region origin ASes present in the Internet Routing Table:  10923
    LACNIC Prefixes per ASN:                                      10.52
LACNIC Region origin ASes announcing only one prefix:              2660
LACNIC Region transit ASes present in the Internet Routing Table:  2212
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:  8611
Number of LACNIC addresses announced to Internet:             176355712
    Equivalent to 10 /8s, 130 /16s and 249 /24s
LACNIC AS Blocks       26592-26623, 27648-28671, 52224-53247,
                       61440-61951, 64099-64197, 262144-273820 + 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:                  27399
    Total AfriNIC prefixes after maximum aggregation:              5334
    AfriNIC Deaggregation factor:                                  5.14
Prefixes being announced from the AfriNIC address blocks:         35845
    Unique aggregates announced from the AfriNIC address blocks:  11861
AfriNIC Region origin ASes present in the Internet Routing Table:  1583
    AfriNIC Prefixes per ASN:                                     22.64
AfriNIC Region origin ASes announcing only one prefix:              549
AfriNIC Region transit ASes present in the Internet Routing Table:  309
Average AfriNIC Region AS path length visible:                      5.1
    Max AfriNIC Region AS path length visible:                       34
Number of AfriNIC region 32-bit ASNs visible in the Routing Table:  918
Number of AfriNIC addresses announced to Internet:            108216320
    Equivalent to 6 /8s, 115 /16s and 64 /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        8999       8919      50  CHINAMOBILE-CN China Mobile Communicati
  7545        5847        787     681  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4693       4192      74  ERX-CERNET-BKB China Education and Rese
  7552        3611       1330      20  VIETEL-AS-AP Viettel Group, VN
  7713        3490       1038      51  TELKOMNET-AS-AP PT Telekomunikasi Indon
 45899        3435       1880      57  VNPT-AS-VN VNPT Corp, VN
  4766        2522      11120     603  KIXS-AS-KR Korea Telecom, KR
  9498        2250        475     232  BBIL-AP BHARTI Airtel Ltd., IN
 45090        2170       1438      79  TENCENT-NET-AP Shenzhen Tencent Compute
  4755        2120        429     199  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        6131      10140    2618  AMAZON-02, US
 11492        4600        305     763  CABLEONE, US
 22773        3985       3028     366  ASN-CXA-ALL-CCI-22773-RDC, US
  7155        3951        264      30  VIASAT-SP-BACKBONE, US
 16625        3665       1892    2564  AKAMAI-AS, US
  6327        3352       1318      63  SHAW, CA
   749        2888      50784    2144  DNIC-AS-00749, US
 30036        2611        374     129  MEDIACOM-ENTERPRISE-BUSINESS, US
   209        2507       4978     430  CENTURYLINK-US-LEGACY-QWEST, US
 20115        2247       3035     507  CHARTER-20115, 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        6817       1718     153  UNI2-AS, ES
  9121        6733       1692      17  TTNET, TR
 20940        3883       3348     210  AKAMAI-ASN1, NL
  8551        3775        378      39  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 39891        3274        188      25  ALJAWWALSTC-AS, SA
 12389        2956       2286     904  ROSTELECOM-AS, RU
  9009        2501        257    1303  M247, GB
 34984        2216        357     602  TELLCOM-AS, TR
 47331        1965        314    1496  TTNET, TR
 58224        1781        926     588  TCI, IR

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       10672       3408     575  Uninet S.A. de C.V., MX
 10620        3445        519     717  Telmex Colombia S.A., CO
 11830        2458        369      62  Instituto Costarricense de Electricidad
 13999        1642        283     465  Mega Cable, S.A. de C.V., MX
  6503        1440        354     524  Axtel, S.A.B. de C.V., MX
 28573        1394       2326     254  CLARO S.A., BR
  3816        1245        658     146  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
 26615        1147       2350     139  TIM SA, BR
  6147        1092        369      21  Telefonica del Peru S.A.A., PE
 11664        1000        191     446  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        1636        393      21  LINKdotNET-AS, EG
 24835        1546        515      32  RAYA-AS, EG
 36992        1299       1518     262  ETISALAT-MISR, EG
 36903        1195        543     114  MT-MPLS, MA
 29571         875         63      60  ORANGE-COTE-IVOIRE, CI
 36935         716        521      39  Vodafone-, EG
  6713         612       1863      34  IAM-AS, MA
 15399         519         50      33  WANANCHI-, KE
 37342         468         32       1  MOVITEL, MZ
 23889         428        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       10672       3408     575  Uninet S.A. de C.V., MX
  9808        8999       8919      50  CHINAMOBILE-CN China Mobile Communicati
 12479        6817       1718     153  UNI2-AS, ES
  9121        6733       1692      17  TTNET, TR
 16509        6131      10140    2618  AMAZON-02, US
  7545        5847        787     681  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4693       4192      74  ERX-CERNET-BKB China Education and Rese
 11492        4600        305     763  CABLEONE, US
 22773        3985       3028     366  ASN-CXA-ALL-CCI-22773-RDC, US
  7155        3951        264      30  VIASAT-SP-BACKBONE, US

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

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

   ASN  No of nets  Net Savings  Description
  9808        8999         8949  CHINAMOBILE-CN China Mobile Communications Grou
  9121        6733         6716  TTNET, TR
 12479        6817         6664  UNI2-AS, ES
  7545        5847         5166  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4693         4619  ERX-CERNET-BKB China Education and Research Net
  7155        3951         3921  VIASAT-SP-BACKBONE, US
 11492        4600         3837  CABLEONE, US
  8551        3775         3736  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
 20940        3883         3673  AKAMAI-ASN1, NL
 22773        3985         3619  ASN-CXA-ALL-CCI-22773-RDC, US

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
     32848  UNALLOCATED  8.28.72.0/24              3356  LEVEL3, US
    394936  UNALLOCATED  8.33.224.0/24            22442  HOU-PHONOSCOPE, US
     54338  UNALLOCATED  8.33.241.0/24             6461  ZAYO-6461, 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 the Special Purpose Address Registry (Global)
-----------------------------------------------------------

Prefix                Origin AS  Description
192.88.99.0/24             6939  HURRICANE, US

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

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
23.154.18.0/24       Origin:    394625  WHITELABELIT, US
23.154.18.0/24      Transit:      6939  HURRICANE, US
23.252.160.0/24      Origin:    398968  GROUP-IID-01, US
23.252.160.0/24     Transit:       174  COGENT-174, US
23.252.161.0/24      Origin:    398968  GROUP-IID-01, US
23.252.161.0/24     Transit:       174  COGENT-174, US
23.252.162.0/24      Origin:    398968  GROUP-IID-01, US
23.252.162.0/24     Transit:       174  COGENT-174, US

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      /10:40      /11:102     /12:305     
/13:591     /14:1208    /15:2033    /16:13575   /17:8335    /18:13854   
/19:25112   /20:43196   /21:51868   /22:108291  /23:95166   /24:521260  
/25:787     /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
  9121        5907        6733  TTNET, TR
 12479        5767        6817  UNI2-AS, ES
  8151        4514       10672  Uninet S.A. de C.V., MX
 11492        3534        4600  CABLEONE, US
  8551        3240        3775  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
  6327        3163        3352  SHAW, CA
  7155        3041        3951  VIASAT-SP-BACKBONE, US
 22773        2978        3985  ASN-CXA-ALL-CCI-22773-RDC, US
 39891        2810        3274  ALJAWWALSTC-AS, SA
 30036        2266        2611  MEDIACOM-ENTERPRISE-BUSINESS, US

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

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

   1:1907      2:994       3:153       4:7         5:3714      6:102    
   7:5         8:1552      9:1        11:172      12:1706     13:410    
  14:2368     15:147      16:39       17:376      18:130      20:167    
  21:4        22:188      23:5401     24:2369     25:2        27:2595   
  29:19       31:2403     32:102      34:1        35:50       36:1734   
  37:3941     38:2499     39:735      40:149      41:3900     42:1040   
  43:2096     44:294      45:15966    46:3851     47:304      49:1634   
  50:1903     51:105      52:1343     54:294      55:734      56:8      
  57:55       58:1769     59:1135     60:954      61:2264     62:2422   
  63:1941     64:5384     65:2319     66:4910     67:2921     68:1182   
  69:4173     70:1347     71:677      72:3075     74:2630     75:1516   
  76:713      77:2158     78:3812     79:2872     80:1917     81:1661   
  82:1452     83:1202     84:1326     85:3558     86:706      87:1880   
  88:2621     89:3138     90:500      91:7497     92:1903     93:2588   
  94:3256     95:4497     96:1314     97:345      98:993      99:864    
 100:75      101:1049    102:1902    103:28045   104:4116    105:461    
 106:845     107:2426    108:753     109:4183    110:2049    111:3207   
 112:1963    113:1535    114:1526    115:1955    116:1893    117:2504   
 118:2322    119:1846    120:1670    121:1027    122:2542    123:2114   
 124:1587    125:2067    128:1362    129:1173    130:917     131:2073   
 132:757     133:368     134:1934    135:287     136:851     137:857    
 138:2454    139:1209    140:868     141:1341    142:1249    143:1439   
 144:1235    145:336     146:1757    147:1472    148:2215    149:1665   
 150:853     151:1083    152:1802    153:446     154:3668    155:1369   
 156:1861    157:1212    158:1007    159:2017    160:2389    161:1268   
 162:3414    163:1204    164:1664    165:1532    166:620     167:1684   
 168:3674    169:679     170:4303    171:825     172:2991    173:3044   
 174:1016    175:1128    176:3473    177:4577    178:3014    179:1988   
 180:2281    181:2866    182:3226    183:1936    184:2417    185:19200  
 186:4303    187:3547    188:3783    189:3219    190:8841    191:1308   
 192:10984   193:8507    194:6925    195:4968    196:2916    197:2360   
 198:5979    199:5994    200:7468    201:5724    202:10420   203:10011  
 204:4534    205:3366    206:3841    207:3379    208:3996    209:4600   
 210:4231    211:2457    212:3929    213:3374    214:1147    215:64     
 216:6386    217:2625    218:1228    219:577     220:1960    221:989    
 222:876     223:2171   

End of report


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