[SANOG] Weekly Global IPv4 Routing Table Report

Routing Table Analysis Role Account cscora at apnic.net
Fri Feb 2 18:02:31 UTC 2024


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
UKNOF, 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 03 Feb, 2024

  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:                              940493
    Prefixes after maximum aggregation (per Origin AS):          357581
    Deaggregation factor:                                          2.63
    Unique aggregates announced (without unneeded subnets):      456313
Total ASes present in the Internet Routing Table:                 75360
    Prefixes per ASN:                                             12.48
Origin-only ASes present in the Internet Routing Table:           64592
Origin ASes announcing only one prefix:                           26541
Transit ASes present in the Internet Routing Table:               10768
Transit-only ASes present in the Internet Routing Table:            494
Average AS path length visible in the Internet Routing Table:       4.3
    Max AS path length visible:                                     121
    Max AS path prepend of ASN (150315)                             116
Prefixes from unregistered ASNs in the Routing Table:              1108
    Number of instances of unregistered ASNs:                      1110
Number of 32-bit ASNs allocated by the RIRs:                      43555
Number of 32-bit ASNs visible in the Routing Table:               35809
Prefixes from 32-bit ASNs in the Routing Table:                  181205
Number of bogon 32-bit ASNs visible in the Routing Table:            33
Special use prefixes present in the Routing Table:                    1
Prefixes being announced from unallocated address space:            503
Number of addresses announced to Internet:                   3044438912
    Equivalent to 181 /8s, 118 /16s and 115 /24s
    Percentage of available address space announced:               82.2
    Percentage of allocated address space announced:               82.2
    Percentage of available address space allocated:              100.0
    Percentage of address space in use by end-sites:               99.6
Total number of prefixes smaller than registry allocations:      310387

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

Prefixes being announced by APNIC Region ASes:                   251780
    Total APNIC prefixes after maximum aggregation:               72796
    APNIC Deaggregation factor:                                    3.46
Prefixes being announced from the APNIC address blocks:          244553
    Unique aggregates announced from the APNIC address blocks:   100011
APNIC Region origin ASes present in the Internet Routing Table:   13956
    APNIC Prefixes per ASN:                                       17.52
APNIC Region origin ASes announcing only one prefix:               4211
APNIC Region transit ASes present in the Internet Routing Table:   1891
Average APNIC Region AS path length visible:                        4.4
    Max APNIC Region AS path length visible:                        121
Number of APNIC region 32-bit ASNs visible in the Routing Table:   9325
Number of APNIC addresses announced to Internet:              774566272
    Equivalent to 46 /8s, 42 /16s and 241 /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, 131072-153913
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:                    274581
    Total ARIN prefixes after maximum aggregation:               123714
    ARIN Deaggregation factor:                                     2.22
Prefixes being announced from the ARIN address blocks:           279530
    Unique aggregates announced from the ARIN address blocks:    132071
ARIN Region origin ASes present in the Internet Routing Table:    19095
    ARIN Prefixes per ASN:                                        14.64
ARIN Region origin ASes announcing only one prefix:                6956
ARIN Region transit ASes present in the Internet Routing Table:    1966
Average ARIN Region AS path length visible:                         3.7
    Max ARIN Region AS path length visible:                          26
Number of ARIN region 32-bit ASNs visible in the Routing Table:    4843
Number of ARIN addresses announced to Internet:              1270334464
    Equivalent to 75 /8s, 183 /16s and 196 /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:                    262220
    Total RIPE prefixes after maximum aggregation:               125357
    RIPE Deaggregation factor:                                     2.09
Prefixes being announced from the RIPE address blocks:           256822
    Unique aggregates announced from the RIPE address blocks:    161039
RIPE Region origin ASes present in the Internet Routing Table:    28523
    RIPE Prefixes per ASN:                                         9.00
RIPE Region origin ASes announcing only one prefix:               12090
RIPE Region transit ASes present in the Internet Routing Table:    3958
Average RIPE Region AS path length visible:                         4.4
    Max RIPE Region AS path length visible:                          37
Number of RIPE region 32-bit ASNs visible in the Routing Table:   11556
Number of RIPE addresses announced to Internet:               714250752
    Equivalent to 42 /8s, 146 /16s and 154 /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
                       196608-216475
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:                  120329
    Total LACNIC prefixes after maximum aggregation:              28856
    LACNIC Deaggregation factor:                                   4.17
Prefixes being announced from the LACNIC address blocks:         118942
    Unique aggregates announced from the LACNIC address blocks:   49633
LACNIC Region origin ASes present in the Internet Routing Table:  11065
    LACNIC Prefixes per ASN:                                      10.75
LACNIC Region origin ASes announcing only one prefix:              2640
LACNIC Region transit ASes present in the Internet Routing Table:  2390
Average LACNIC Region AS path length visible:                       4.9
    Max LACNIC Region AS path length visible:                        55
Number of LACNIC region 32-bit ASNs visible in the Routing Table:  8918
Number of LACNIC addresses announced to Internet:             177976064
    Equivalent to 10 /8s, 155 /16s and 179 /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:                  30475
    Total AfriNIC prefixes after maximum aggregation:              6138
    AfriNIC Deaggregation factor:                                  4.96
Prefixes being announced from the AfriNIC address blocks:         40143
    Unique aggregates announced from the AfriNIC address blocks:  13145
AfriNIC Region origin ASes present in the Internet Routing Table:  1822
    AfriNIC Prefixes per ASN:                                     22.03
AfriNIC Region origin ASes announcing only one prefix:              644
AfriNIC Region transit ASes present in the Internet Routing Table:  350
Average AfriNIC Region AS path length visible:                      4.9
    Max AfriNIC Region AS path length visible:                       30
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1167
Number of AfriNIC addresses announced to Internet:            107021056
    Equivalent to 6 /8s, 97 /16s and 3 /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        9830       8740      56  CHINAMOBILE-CN China Mobile Communicati
  7545        5678        784     684  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4917       4192      75  ERX-CERNET-BKB China Education and Rese
 18403        4563        347      25  FPT-AS-AP FPT Telecom Company, VN
  7552        3878       1330      20  VIETEL-AS-AP Viettel Group, VN
  7713        3582       1038      55  TELKOMNET-AS-AP PT Telekomunikasi Indon
  9498        3475        499     255  BBIL-AP BHARTI Airtel Ltd., IN
 45899        3283       1872      99  VNPT-AS-VN VNPT Corp, VN
 24560        2688        858     377  AIRTELBROADBAND-AS-AP Bharti Airtel Ltd
  4766        2302      11258     574  KIXS-AS-KR Korea Telecom, KR

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        9588      11246    3374  AMAZON-02, US
 11492        4576        303     662  CABLEONE, US
  7155        4177        288      96  VIASAT-SP-BACKBONE, US
 22773        3625       3062     301  ASN-CXA-ALL-CCI-22773-RDC, US
  6327        3593       1320      74  SHAW, CA
 16625        3240       1421    2313  AKAMAI-AS, US
   749        3185      54927    2437  DNIC-AS-00749, US
   367        2910       3722    1404  DNIC-ASBLK-00306-00371, US
   174        2890       6637     666  COGENT-174, US
396982        2749       3639     390  GOOGLE-CLOUD-PLATFORM, 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        7571       1698     148  UNI2-AS, ES
 39891        4658        280      55  ALJAWWALSTC-AS, SA
 20940        3904       3396     134  AKAMAI-ASN1, NL
  9009        3266        284    1583  M247, RO
 12389        2968       2301     906  ROSTELECOM-AS, RU
  8551        2700        368      35  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 34984        2343        362     596  TELLCOM-AS, TR
 13188        1607        100      26  TRIOLAN, UA
 58224        1504        856     577  TCI, IR
  8452        1497       1852      14  TE-AS TE-AS, EG

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       12385       3385     615  UNINET, MX
 10620        3520        496     895  Telmex Colombia S.A., CO
 13999        2501        337     641  Mega Cable, S.A. de C.V., MX
 11830        2005        369      64  Instituto Costarricense de Electricidad
 28573        1325       2319     238  Claro NXT Telecomunicacoes Ltda, BR
  3816        1306        787     197  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
  6503        1237        340     498  Axtel, S.A.B. de C.V., MX
 11664        1128        178     423  Techtel LMDS Comunicaciones Interactiva
  6147        1088        369      22  Telefonica del Peru S.A.A., PE
 22884        1070        115     386  TOTAL PLAY TELECOMUNICACIONES SA DE CV,

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
 24835        1548        545      28  RAYA-AS, EG
 24863        1532        389      16  LINKdotNET-AS, EG
 36992        1365       1519     282  ETISALAT-MISR, EG
 36903        1249        554      96  MT-MPLS, MA
 29571        1102         71      57  ORANGE-COTE-IVOIRE, CI
 36935         935        521      42  Vodafone-, EG
  6713         551       1861      34  IAM-AS, MA
 36914         535         82       3  KENET-AS, KE
 15399         525         55      53  WANANCHI-, KE
 24757         488         73       5  EthioNet-AS, ET

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       12385       3385     615  UNINET, MX
  9808        9830       8740      56  CHINAMOBILE-CN China Mobile Communicati
 16509        9588      11246    3374  AMAZON-02, US
 12479        7571       1698     148  UNI2-AS, ES
  7545        5678        784     684  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4917       4192      75  ERX-CERNET-BKB China Education and Rese
 39891        4658        280      55  ALJAWWALSTC-AS, SA
 11492        4576        303     662  CABLEONE, US
 18403        4563        347      25  FPT-AS-AP FPT Telecom Company, VN
  7155        4177        288      96  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        9830         9774  CHINAMOBILE-CN China Mobile Communications Grou
 12479        7571         7423  UNI2-AS, ES
 16509        9588         6214  AMAZON-02, US
  7545        5678         4994  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4917         4842  ERX-CERNET-BKB China Education and Research Net
 39891        4658         4603  ALJAWWALSTC-AS, SA
 18403        4563         4538  FPT-AS-AP FPT Telecom Company, VN
  7155        4177         4081  VIASAT-SP-BACKBONE, US
 11492        4576         3914  CABLEONE, US
  7552        3878         3858  VIETEL-AS-AP Viettel Group, VN

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
     65536  DOCUMENT     5.102.30.0/24            65512  -Private Use AS-, ZZ
     33492  UNALLOCATED  8.6.184.0/23             33650  COMCAST-33650, US
     33123  UNALLOCATED  8.10.69.0/24               174  COGENT-174, US
     12169  UNALLOCATED  8.15.207.0/24            32787  PROLEXIC-TECHNOLOGIES-DDOS-M
     40493  UNALLOCATED  8.17.26.0/24              3356  LEVEL3, US
     53775  UNALLOCATED  8.20.88.0/24              7029  WINDSTREAM, US
     62828  UNALLOCATED  8.21.130.0/24             3356  LEVEL3, US
    393266  UNALLOCATED  8.23.52.0/24             46887  LIGHTOWER, US
    396894  UNALLOCATED  8.28.201.0/24            46887  LIGHTOWER, US
    394936  UNALLOCATED  8.33.224.0/24            22442  HOU-PHONOSCOPE, 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
23.140.216.0/24      Origin:     27176  DATAWAGON, US
23.140.216.0/24     Transit:     20278  NEXEON, US
23.141.0.0/24        Origin:    395350  RESERVED, ZZ
23.141.0.0/24       Transit:     11426  TWC-11426-CAROLINAS, US
23.176.160.0/24      Origin:    397327  RESERVED, ZZ
23.176.160.0/24     Transit:     19108  SUDDENLINK-COMMUNICATIONS, US
23.189.192.0/24      Origin:     27593  RESERVED, ZZ
23.189.192.0/24     Transit:       174  COGENT-174, US
27.0.192.0/24        Origin:    136800  MOACKCOLTD-AS-AP MOACK.Co.LTD, KR
27.0.192.0/24       Transit:     64050  BCPL-SG BGPNET Global ASN, SG

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       /9:14      /10:37      /11:98      /12:300     
/13:579     /14:1195    /15:2071    /16:13403   /17:8220    /18:13710   
/19:25007   /20:44253   /21:51866   /22:110869  /23:99372   /24:568746  
/25:737     /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        6681        7571  UNI2-AS, ES
  8151        6363       12385  UNINET, MX
 11492        3490        4576  CABLEONE, US
  6327        3391        3593  SHAW, CA
 39891        3340        4658  ALJAWWALSTC-AS, SA
  7155        3121        4177  VIASAT-SP-BACKBONE, US
 22773        2659        3625  ASN-CXA-ALL-CCI-22773-RDC, US
  8551        2176        2700  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
 30036        2129        2472  MEDIACOM-ENTERPRISE-BUSINESS, US
 10620        2126        3520  Telmex Colombia S.A., CO

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

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

   1:2330      2:1541      3:291       4:5         5:4463      6:163    
   7:6         8:1532      9:1        11:172      12:1479     13:379    
  14:2355     15:311      16:203      17:362      18:721      20:352    
  21:4        22:188      23:6595     24:2717     25:2        27:2551   
  29:19       31:2560     32:56       34:35       35:124      36:2151   
  37:4481     38:6703     39:900      40:151      41:4087     42:2214   
  43:2335     44:328      45:16830    46:4295     47:286      49:1907   
  50:1901     51:572      52:1592     54:359      55:888      56:5      
  57:140      58:2026     59:1205     60:1018     61:2601     62:2710   
  63:1921     64:5520     65:2334     66:4928     67:3058     68:1338   
  69:4102     70:1199     71:579      72:2936     74:2650     75:1556   
  76:627      77:2352     78:1843     79:2504     80:2133     81:1890   
  82:1515     83:1248     84:1635     85:3103     86:771      87:1957   
  88:1219     89:3958     90:668      91:7934     92:2184     93:2635   
  94:3613     95:4042     96:1288     97:318      98:1035     99:743    
 100:95      101:1169    102:3054    103:32539   104:4779    105:596    
 106:922     107:2760    108:1133    109:4025    110:2151    111:3196   
 112:2070    113:1795    114:1762    115:1967    116:1969    117:2630   
 118:2754    119:1945    120:1811    121:1324    122:2646    123:2228   
 124:1605    125:2843    126:28      128:1511    129:926     130:1080   
 131:1815    132:822     133:410     134:1706    135:307     136:921    
 137:1034    138:2772    139:1569    140:1319    141:1343    142:1554   
 143:1521    144:1015    145:344     146:2004    147:1681    148:2505   
 149:2506    150:1023    151:1319    152:1979    153:528     154:5668   
 155:1368    156:2104    157:1466    158:1086    159:2205    160:2606   
 161:1625    162:3605    163:1691    164:1625    165:2104    166:1072   
 167:1707    168:3829    169:798     170:4719    171:1012    172:3806   
 173:3008    174:902     175:1216    176:3634    177:4579    178:3520   
 179:2216    180:2359    181:3654    182:3469    183:2017    184:2277   
 185:20535   186:4771    187:4343    188:4020    189:4039    190:9308   
 191:1440    192:11000   193:8982    194:7338    195:5223    196:3140   
 197:2644    198:6009    199:7107    200:8050    201:6317    202:10471  
 203:10159   204:4566    205:3733    206:4441    207:3518    208:4125   
 209:4921    210:4632    211:2597    212:4245    213:3411    214:1107   
 215:44      216:6808    217:2773    218:1362    219:597     220:2053   
 221:1020    222:873     223:2229   

End of report


More information about the sanog mailing list