[menog] Weekly Global IPv4 Routing Table Report

Routing Table Analysis Role Account cscora at apnic.net
Fri Apr 12 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 13 Apr, 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:                              943717
    Prefixes after maximum aggregation (per Origin AS):          360569
    Deaggregation factor:                                          2.62
    Unique aggregates announced (without unneeded subnets):      460113
Total ASes present in the Internet Routing Table:                 75646
    Prefixes per ASN:                                             12.48
Origin-only ASes present in the Internet Routing Table:           64860
Origin ASes announcing only one prefix:                           26582
Transit ASes present in the Internet Routing Table:               10786
Transit-only ASes present in the Internet Routing Table:            513
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:              1084
    Number of instances of unregistered ASNs:                      1086
Number of 32-bit ASNs allocated by the RIRs:                      44105
Number of 32-bit ASNs visible in the Routing Table:               36196
Prefixes from 32-bit ASNs in the Routing Table:                  184594
Number of bogon 32-bit ASNs visible in the Routing Table:            18
Special use prefixes present in the Routing Table:                    1
Prefixes being announced from unallocated address space:            604
Number of addresses announced to Internet:                   3028380800
    Equivalent to 180 /8s, 129 /16s and 108 /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:      311335

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

Prefixes being announced by APNIC Region ASes:                   249982
    Total APNIC prefixes after maximum aggregation:               73481
    APNIC Deaggregation factor:                                    3.40
Prefixes being announced from the APNIC address blocks:          242376
    Unique aggregates announced from the APNIC address blocks:   100311
APNIC Region origin ASes present in the Internet Routing Table:   14075
    APNIC Prefixes per ASN:                                       17.22
APNIC Region origin ASes announcing only one prefix:               4257
APNIC Region transit ASes present in the Internet Routing Table:   1877
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:   9459
Number of APNIC addresses announced to Internet:              760672896
    Equivalent to 45 /8s, 86 /16s and 242 /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:                    275234
    Total ARIN prefixes after maximum aggregation:               124610
    ARIN Deaggregation factor:                                     2.21
Prefixes being announced from the ARIN address blocks:           279979
    Unique aggregates announced from the ARIN address blocks:    133368
ARIN Region origin ASes present in the Internet Routing Table:    19127
    ARIN Prefixes per ASN:                                        14.64
ARIN Region origin ASes announcing only one prefix:                6955
ARIN Region transit ASes present in the Internet Routing Table:    1986
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:    4876
Number of ARIN addresses announced to Internet:              1269427712
    Equivalent to 75 /8s, 169 /16s and 238 /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, 393216-402332
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:                    264820
    Total RIPE prefixes after maximum aggregation:               126714
    RIPE Deaggregation factor:                                     2.09
Prefixes being announced from the RIPE address blocks:           259545
    Unique aggregates announced from the RIPE address blocks:    163305
RIPE Region origin ASes present in the Internet Routing Table:    28619
    RIPE Prefixes per ASN:                                         9.07
RIPE Region origin ASes announcing only one prefix:               12135
RIPE Region transit ASes present in the Internet Routing Table:    3977
Average RIPE Region AS path length visible:                         4.4
    Max RIPE Region AS path length visible:                          28
Number of RIPE region 32-bit ASNs visible in the Routing Table:   11733
Number of RIPE addresses announced to Internet:               714778880
    Equivalent to 42 /8s, 154 /16s and 169 /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:                  121743
    Total LACNIC prefixes after maximum aggregation:              28914
    LACNIC Deaggregation factor:                                   4.21
Prefixes being announced from the LACNIC address blocks:         120013
    Unique aggregates announced from the LACNIC address blocks:   49529
LACNIC Region origin ASes present in the Internet Routing Table:  11077
    LACNIC Prefixes per ASN:                                      10.83
LACNIC Region origin ASes announcing only one prefix:              2590
LACNIC Region transit ASes present in the Internet Routing Table:  2393
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:  8943
Number of LACNIC addresses announced to Internet:             177216256
    Equivalent to 10 /8s, 144 /16s and 27 /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:                  30854
    Total AfriNIC prefixes after maximum aggregation:              6141
    AfriNIC Deaggregation factor:                                  5.02
Prefixes being announced from the AfriNIC address blocks:         41200
    Unique aggregates announced from the AfriNIC address blocks:  13120
AfriNIC Region origin ASes present in the Internet Routing Table:  1818
    AfriNIC Prefixes per ASN:                                     22.66
AfriNIC Region origin ASes announcing only one prefix:              645
AfriNIC Region transit ASes present in the Internet Routing Table:  353
Average AfriNIC Region AS path length visible:                      4.9
    Max AfriNIC Region AS path length visible:                       31
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1185
Number of AfriNIC addresses announced to Internet:            105965312
    Equivalent to 6 /8s, 80 /16s and 231 /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        9850       8743      68  CHINAMOBILE-CN China Mobile Communicati
  7545        5661        777     677  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4936       4192      76  ERX-CERNET-BKB China Education and Rese
  7552        3862       1330      20  VIETEL-AS-AP Viettel Group, VN
  7713        3623       1043      64  TELKOMNET-AS-AP PT Telekomunikasi Indon
  9498        3579        498     257  BBIL-AP BHARTI Airtel Ltd., IN
 45899        3289       1872      98  VNPT-AS-VN VNPT Corp, VN
 24560        2774        861     372  AIRTELBROADBAND-AS-AP Bharti Airtel Ltd
  4766        2308      11258     584  KIXS-AS-KR Korea Telecom, KR
  4755        2200        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        9868      11373    3449  AMAZON-02, US
 11492        4602        305     605  CABLEONE, US
  7155        4170        287      90  VIASAT-SP-BACKBONE, US
  6327        3605       1320      75  SHAW, CA
 22773        3526       3048     241  ASN-CXA-ALL-CCI-22773-RDC, US
   174        3335       6632     829  COGENT-174, US
   749        3201      54912    2453  DNIC-AS-00749, US
 16625        3120       1331    2228  AKAMAI-AS, US
   367        2820       3549    1342  DNIC-ASBLK-00306-00371, US
396982        2763       3641     413  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        7711       1709     144  UNI2-AS, ES
 39891        4758        286      60  ALJAWWALSTC-AS, SA
 20940        3872       3396     128  AKAMAI-ASN1, NL
  9009        3277        284    1600  M247, RO
 12389        2978       2303     901  ROSTELECOM-AS, RU
  8551        2635        368      35  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 34984        2349        364     583  TELLCOM-AS, TR
 13188        1607        100      26  TRIOLAN, UA
  8452        1529       1852      14  TE-AS TE-AS, EG
 44477        1529        100     726  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       12400       3321     487  UNINET, MX
 10620        3532        497     886  Telmex Colombia S.A., CO
 13999        2515        346     666  Mega Cable, S.A. de C.V., MX
 11830        2004        369      64  Instituto Costarricense de Electricidad
 28573        1341       2315     247  Claro NXT Telecomunicacoes Ltda, BR
  3816        1312        788     199  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
 11664        1152        177     428  Techtel LMDS Comunicaciones Interactiva
  6503        1137        346     478  Axtel, S.A.B. de C.V., MX
  6147        1081        369      22  Telefonica del Peru S.A.A., PE
 26615        1067       2503      52  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        1158         75      78  ORANGE-COTE-IVOIRE, CI
 36935         935        521      42  Vodafone-, EG
  6713         554       1861      34  IAM-AS, MA
 15399         529         56      54  WANANCHI-, KE
 36914         485         82       3  KENET-AS, KE
 24757         436         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       12400       3321     487  UNINET, MX
 16509        9868      11373    3449  AMAZON-02, US
  9808        9850       8743      68  CHINAMOBILE-CN China Mobile Communicati
 12479        7711       1709     144  UNI2-AS, ES
  7545        5661        777     677  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4936       4192      76  ERX-CERNET-BKB China Education and Rese
 39891        4758        286      60  ALJAWWALSTC-AS, SA
 11492        4602        305     605  CABLEONE, US
  7155        4170        287      90  VIASAT-SP-BACKBONE, US
 20940        3872       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        9850         9782  CHINAMOBILE-CN China Mobile Communications Grou
 12479        7711         7567  UNI2-AS, ES
 16509        9868         6419  AMAZON-02, US
  7545        5661         4984  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4936         4860  ERX-CERNET-BKB China Education and Research Net
 39891        4758         4698  ALJAWWALSTC-AS, SA
  7155        4170         4080  VIASAT-SP-BACKBONE, US
 11492        4602         3997  CABLEONE, US
  7552        3862         3842  VIETEL-AS-AP Viettel Group, VN
 20940        3872         3744  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
23.189.192.0/24      Origin:     27593  RESERVED, ZZ
23.189.192.0/24     Transit:       174  COGENT-174, US
27.0.192.0/22        Origin:    138415  YANCYLIMITED-AS-HK Yancy 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

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    /15:2071    /16:13298   /17:8257    /18:13749   
/19:24852   /20:43928   /21:51662   /22:111187  /23:98695   /24:573058  
/25:723     /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        6830        7711  UNI2-AS, ES
  8151        6423       12400  UNINET, MX
 11492        3515        4602  CABLEONE, US
 39891        3440        4758  ALJAWWALSTC-AS, SA
  6327        3402        3605  SHAW, CA
  7155        3114        4170  VIASAT-SP-BACKBONE, US
 22773        2614        3526  ASN-CXA-ALL-CCI-22773-RDC, US
 30036        2148        2494  MEDIACOM-ENTERPRISE-BUSINESS, US
 10620        2138        3532  Telmex Colombia S.A., CO
  8551        2111        2635  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)
----------------------------------------------

   1:1643      2:1499      3:322       4:6         5:4532      6:161    
   7:6         8:1516      9:1        11:172      12:1463     13:379    
  14:2398     15:318      16:209      17:369      18:758      20:358    
  21:4        22:188      23:6683     24:2714     25:2        27:2559   
  29:19       31:2691     32:48       34:61       35:127      36:2280   
  37:4469     38:7190     39:891      40:123      41:4074     42:981    
  43:2369     44:318      45:17083    46:4427     47:306      49:1946   
  50:1925     51:573      52:1586     54:313      55:998      56:5      
  57:166      58:1893     59:1247     60:1033     61:2587     62:2690   
  63:1894     64:5531     65:2317     66:4680     67:3002     68:1316   
  69:4097     70:1194     71:577      72:2904     74:2595     75:1549   
  76:630      77:2430     78:1849     79:2490     80:2184     81:1957   
  82:1553     83:1317     84:1652     85:3138     86:841      87:2265   
  88:1244     89:4053     90:677      91:8099     92:2211     93:2666   
  94:3672     95:4134     96:1295     97:315      98:1042     99:743    
 100:79      101:1184    102:3116    103:32528   104:4855    105:636    
 106:942     107:2757    108:1124    109:4084    110:2137    111:3280   
 112:2075    113:1592    114:1792    115:2031    116:1891    117:2621   
 118:2380    119:1965    120:1811    121:1327    122:2680    123:2229   
 124:1621    125:2884    126:32      128:1489    129:937     130:1114   
 131:1858    132:804     133:410     134:1717    135:318     136:942    
 137:1061    138:2843    139:1553    140:1393    141:1365    142:1587   
 143:1486    144:1010    145:349     146:2061    147:1842    148:2460   
 149:2562    150:1030    151:1342    152:2012    153:523     154:6478   
 155:1446    156:2313    157:1698    158:1114    159:2325    160:2627   
 161:1620    162:3580    163:1719    164:1637    165:2133    166:1172   
 167:1802    168:3943    169:797     170:4779    171:1019    172:3821   
 173:3038    174:908     175:1203    176:3630    177:4697    178:3583   
 179:2263    180:2354    181:3687    182:3429    183:1804    184:2273   
 185:20715   186:4996    187:4541    188:4046    189:4165    190:9322   
 191:1491    192:10947   193:9070    194:7484    195:5275    196:3123   
 197:2475    198:6029    199:7620    200:8058    201:6315    202:10477  
 203:10187   204:4568    205:3741    206:4490    207:3495    208:4155   
 209:5067    210:4653    211:2580    212:4294    213:3417    214:1082   
 215:50      216:6771    217:2816    218:1362    219:580     220:2044   
 221:1033    222:880     223:2239   

End of report


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