[SANOG] Weekly Global IPv4 Routing Table Report

Routing Table Analysis Role Account cscora at apnic.net
Fri Mar 29 18:02:15 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 30 Mar, 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:                              941345
    Prefixes after maximum aggregation (per Origin AS):          359528
    Deaggregation factor:                                          2.62
    Unique aggregates announced (without unneeded subnets):      458844
Total ASes present in the Internet Routing Table:                 75602
    Prefixes per ASN:                                             12.45
Origin-only ASes present in the Internet Routing Table:           64819
Origin ASes announcing only one prefix:                           26589
Transit ASes present in the Internet Routing Table:               10783
Transit-only ASes present in the Internet Routing Table:            508
Average AS path length visible in the Internet Routing Table:       4.3
    Max AS path length visible:                                      55
    Max AS path prepend of ASN (265020)                              50
Prefixes from unregistered ASNs in the Routing Table:              1062
    Number of instances of unregistered ASNs:                      1064
Number of 32-bit ASNs allocated by the RIRs:                      43966
Number of 32-bit ASNs visible in the Routing Table:               36132
Prefixes from 32-bit ASNs in the Routing Table:                  183764
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:            587
Number of addresses announced to Internet:                   3028684160
    Equivalent to 180 /8s, 134 /16s and 13 /24s
    Percentage of available address space announced:               81.8
    Percentage of allocated address space announced:               81.8
    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:      310572

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

Prefixes being announced by APNIC Region ASes:                   249547
    Total APNIC prefixes after maximum aggregation:               73255
    APNIC Deaggregation factor:                                    3.41
Prefixes being announced from the APNIC address blocks:          242115
    Unique aggregates announced from the APNIC address blocks:   100102
APNIC Region origin ASes present in the Internet Routing Table:   14081
    APNIC Prefixes per ASN:                                       17.19
APNIC Region origin ASes announcing only one prefix:               4264
APNIC Region transit ASes present in the Internet Routing Table:   1876
Average APNIC Region AS path length visible:                        4.4
    Max APNIC Region AS path length visible:                         35
Number of APNIC region 32-bit ASNs visible in the Routing Table:   9458
Number of APNIC addresses announced to Internet:              760858496
    Equivalent to 45 /8s, 89 /16s and 199 /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:                    274731
    Total ARIN prefixes after maximum aggregation:               124158
    ARIN Deaggregation factor:                                     2.21
Prefixes being announced from the ARIN address blocks:           279459
    Unique aggregates announced from the ARIN address blocks:    132739
ARIN Region origin ASes present in the Internet Routing Table:    19129
    ARIN Prefixes per ASN:                                        14.61
ARIN Region origin ASes announcing only one prefix:                6962
ARIN Region transit ASes present in the Internet Routing Table:    1989
Average ARIN Region AS path length visible:                         3.7
    Max ARIN Region AS path length visible:                          25
Number of ARIN region 32-bit ASNs visible in the Routing Table:    4874
Number of ARIN addresses announced to Internet:              1269705728
    Equivalent to 75 /8s, 174 /16s and 44 /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:                    263969
    Total RIPE prefixes after maximum aggregation:               126443
    RIPE Deaggregation factor:                                     2.09
Prefixes being announced from the RIPE address blocks:           258872
    Unique aggregates announced from the RIPE address blocks:    162858
RIPE Region origin ASes present in the Internet Routing Table:    28590
    RIPE Prefixes per ASN:                                         9.05
RIPE Region origin ASes announcing only one prefix:               12116
RIPE Region transit ASes present in the Internet Routing Table:    3979
Average RIPE Region AS path length visible:                         4.5
    Max RIPE Region AS path length visible:                          28
Number of RIPE region 32-bit ASNs visible in the Routing Table:   11690
Number of RIPE addresses announced to Internet:               714742272
    Equivalent to 42 /8s, 154 /16s and 26 /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:                  121296
    Total LACNIC prefixes after maximum aggregation:              28829
    LACNIC Deaggregation factor:                                   4.21
Prefixes being announced from the LACNIC address blocks:         119615
    Unique aggregates announced from the LACNIC address blocks:   49629
LACNIC Region origin ASes present in the Internet Routing Table:  11067
    LACNIC Prefixes per ASN:                                      10.81
LACNIC Region origin ASes announcing only one prefix:              2600
LACNIC Region transit ASes present in the Internet Routing Table:  2386
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:  8924
Number of LACNIC addresses announced to Internet:             177276416
    Equivalent to 10 /8s, 145 /16s and 6 /24s
LACNIC AS Blocks       26592-26623, 27648-28671, 52224-53247,
                       61440-61951, 64099-64197, 262144-274844 + 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:                  30740
    Total AfriNIC prefixes after maximum aggregation:              6143
    AfriNIC Deaggregation factor:                                  5.00
Prefixes being announced from the AfriNIC address blocks:         40697
    Unique aggregates announced from the AfriNIC address blocks:  13047
AfriNIC Region origin ASes present in the Internet Routing Table:  1818
    AfriNIC Prefixes per ASN:                                     22.39
AfriNIC Region origin ASes announcing only one prefix:              647
AfriNIC Region transit ASes present in the Internet Routing Table:  358
Average AfriNIC Region AS path length visible:                      4.9
    Max AfriNIC Region AS path length visible:                       29
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1186
Number of AfriNIC addresses announced to Internet:            105790976
    Equivalent to 6 /8s, 78 /16s and 62 /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        9835       8742      66  CHINAMOBILE-CN China Mobile Communicati
  7545        5660        777     674  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4934       4192      76  ERX-CERNET-BKB China Education and Rese
  7552        3857       1330      20  VIETEL-AS-AP Viettel Group, VN
  7713        3595       1043      64  TELKOMNET-AS-AP PT Telekomunikasi Indon
  9498        3525        495     254  BBIL-AP BHARTI Airtel Ltd., IN
 45899        3289       1872      98  VNPT-AS-VN VNPT Corp, VN
 24560        2766        863     367  AIRTELBROADBAND-AS-AP Bharti Airtel Ltd
  4766        2310      11259     574  KIXS-AS-KR Korea Telecom, KR
  4755        2196        434     196  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        9794      11363    3389  AMAZON-02, US
 11492        4596        305     619  CABLEONE, US
  7155        4170        287      89  VIASAT-SP-BACKBONE, US
  6327        3604       1320      75  SHAW, CA
 22773        3525       3046     239  ASN-CXA-ALL-CCI-22773-RDC, US
   174        3408       6652     704  COGENT-174, US
   749        3189      54916    2441  DNIC-AS-00749, US
 16625        3167       1361    2257  AKAMAI-AS, US
   367        2889       3596    1368  DNIC-ASBLK-00306-00371, US
396982        2763       3641     412  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        7675       1709     144  UNI2-AS, ES
 39891        4758        286      60  ALJAWWALSTC-AS, SA
 20940        3873       3396     128  AKAMAI-ASN1, NL
  9009        3259        283    1595  M247, RO
 12389        2979       2303     903  ROSTELECOM-AS, RU
  8551        2648        368      35  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 34984        2341        363     589  TELLCOM-AS, TR
 13188        1607        100      26  TRIOLAN, UA
  8452        1528       1852      14  TE-AS TE-AS, EG
 44477        1499         98     710  STARK-INDUSTRIES, GB

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       12336       3314     487  UNINET, MX
 10620        3527        497     888  Telmex Colombia S.A., CO
 13999        2515        342     655  Mega Cable, S.A. de C.V., MX
 11830        2004        369      64  Instituto Costarricense de Electricidad
 28573        1343       2319     241  Claro NXT Telecomunicacoes Ltda, BR
  3816        1313        788     194  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
 11664        1148        179     424  Techtel LMDS Comunicaciones Interactiva
  6503        1103        346     480  Axtel, S.A.B. de C.V., MX
  6147        1088        369      22  Telefonica del Peru S.A.A., PE
 26615        1067       2503      53  TIM SA, BR

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        1549        545      28  RAYA-AS, EG
 24863        1502        389      20  LINKdotNET-AS, EG
 36992        1367       1519     283  ETISALAT-MISR, EG
 36903        1249        554      96  MT-MPLS, MA
 29571        1207         76      61  ORANGE-COTE-IVOIRE, CI
 36935         935        521      42  Vodafone-, EG
  6713         554       1861      34  IAM-AS, MA
 15399         536         56      54  WANANCHI-, KE
 36914         488         82       3  KENET-AS, KE
 24757         428         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       12336       3314     487  UNINET, MX
  9808        9835       8742      66  CHINAMOBILE-CN China Mobile Communicati
 16509        9794      11363    3389  AMAZON-02, US
 12479        7675       1709     144  UNI2-AS, ES
  7545        5660        777     674  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4934       4192      76  ERX-CERNET-BKB China Education and Rese
 39891        4758        286      60  ALJAWWALSTC-AS, SA
 11492        4596        305     619  CABLEONE, US
  7155        4170        287      89  VIASAT-SP-BACKBONE, US
 20940        3873       3396     128  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        9835         9769  CHINAMOBILE-CN China Mobile Communications Grou
 12479        7675         7531  UNI2-AS, ES
 16509        9794         6405  AMAZON-02, US
  7545        5660         4986  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4934         4858  ERX-CERNET-BKB China Education and Research Net
 39891        4758         4698  ALJAWWALSTC-AS, SA
  7155        4170         4081  VIASAT-SP-BACKBONE, US
 11492        4596         3977  CABLEONE, US
  7552        3857         3837  VIETEL-AS-AP Viettel Group, VN
 20940        3873         3745  AKAMAI-ASN1, NL

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
     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
     46639  UNALLOCATED  8.17.66.0/24               701  UUNET, 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  CROWNCASTLE-AS46887, US
    396894  UNALLOCATED  8.28.201.0/24            46887  CROWNCASTLE-AS46887, 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
27.0.192.0/22        Origin:    138415  HENGDA-HK HENGDA NETWORK LIMITED, HK
27.0.192.0/22       Transit:     51847  NEAROUTE, HK
27.0.192.0/24        Origin:    138195  MOACKCOLTD-AS-AP MOACK.Co.LTD, KR
27.0.192.0/24       Transit:      3786  LGDACOM LG DACOM Corporation, KR
27.0.193.0/24        Origin:    138195  MOACKCOLTD-AS-AP MOACK.Co.LTD, KR
27.0.193.0/24       Transit:      3786  LGDACOM LG DACOM Corporation, KR

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      /11:95      /12:297     
/13:583     /14:1195    /15:2072    /16:13298   /17:8249    /18:13741   
/19:24860   /20:44022   /21:51615   /22:111082  /23:98475   /24:570968  
/25:726     /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        6792        7675  UNI2-AS, ES
  8151        6361       12336  UNINET, MX
 11492        3509        4596  CABLEONE, US
 39891        3440        4758  ALJAWWALSTC-AS, SA
  6327        3401        3604  SHAW, CA
  7155        3114        4170  VIASAT-SP-BACKBONE, US
 22773        2615        3525  ASN-CXA-ALL-CCI-22773-RDC, US
 30036        2149        2493  MEDIACOM-ENTERPRISE-BUSINESS, US
 10620        2133        3527  Telmex Colombia S.A., CO
  8551        2124        2648  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo

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

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

   1:1641      2:1491      3:320       4:6         5:4519      6:162    
   7:6         8:1527      9:1        11:172      12:1468     13:378    
  14:2395     15:318      16:210      17:369      18:757      20:356    
  21:4        22:188      23:6661     24:2710     25:2        27:2565   
  29:19       31:2653     32:49       34:61       35:126      36:2241   
  37:4490     38:7173     39:894      40:125      41:4067     42:984    
  43:2347     44:315      45:16981    46:4405     47:299      49:1944   
  50:1898     51:573      52:1583     54:307      55:890      56:5      
  57:166      58:1882     59:1246     60:1028     61:2586     62:2694   
  63:1906     64:5533     65:2320     66:4729     67:3058     68:1336   
  69:4086     70:1196     71:575      72:2906     74:2585     75:1550   
  76:631      77:2427     78:1848     79:2479     80:2182     81:1934   
  82:1546     83:1314     84:1647     85:3117     86:832      87:2271   
  88:1240     89:4016     90:679      91:8075     92:2199     93:2643   
  94:3673     95:4159     96:1306     97:312      98:1040     99:743    
 100:92      101:1181    102:3071    103:32545   104:4787    105:635    
 106:941     107:2738    108:1119    109:4060    110:2141    111:3271   
 112:2072    113:1567    114:1788    115:2001    116:1893    117:2616   
 118:2382    119:1960    120:1809    121:1328    122:2678    123:2246   
 124:1621    125:2877    126:32      128:1484    129:938     130:1094   
 131:1849    132:801     133:410     134:1722    135:316     136:945    
 137:1059    138:2812    139:1559    140:1392    141:1361    142:1608   
 143:1492    144:1010    145:347     146:2030    147:1736    148:2478   
 149:2583    150:1019    151:1337    152:1978    153:523     154:6194   
 155:1422    156:2217    157:1662    158:1075    159:2296    160:2604   
 161:1643    162:3597    163:1716    164:1634    165:2126    166:1073   
 167:1767    168:3923    169:794     170:4727    171:1025    172:3830   
 173:3045    174:906     175:1202    176:3677    177:4682    178:3580   
 179:2264    180:2365    181:3666    182:3421    183:1807    184:2267   
 185:20652   186:4932    187:4462    188:4040    189:4073    190:9302   
 191:1496    192:11003   193:9062    194:7447    195:5265    196:3152   
 197:2388    198:6011    199:7552    200:7992    201:6311    202:10491  
 203:10192   204:4566    205:3758    206:4500    207:3497    208:4131   
 209:5037    210:4652    211:2579    212:4287    213:3386    214:1088   
 215:50      216:6777    217:2813    218:1362    219:581     220:2046   
 221:1031    222:876     223:2237   

End of report


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