[menog] Weekly Global IPv4 Routing Table Report

Routing Table Analysis Role Account cscora at apnic.net
Fri Jan 19 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 20 Jan, 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:                              938980
    Prefixes after maximum aggregation (per Origin AS):          357247
    Deaggregation factor:                                          2.63
    Unique aggregates announced (without unneeded subnets):      455839
Total ASes present in the Internet Routing Table:                 75298
    Prefixes per ASN:                                             12.47
Origin-only ASes present in the Internet Routing Table:           64546
Origin ASes announcing only one prefix:                           26557
Transit ASes present in the Internet Routing Table:               10752
Transit-only ASes present in the Internet Routing Table:            493
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:              1107
    Number of instances of unregistered ASNs:                      1109
Number of 32-bit ASNs allocated by the RIRs:                      43428
Number of 32-bit ASNs visible in the Routing Table:               35732
Prefixes from 32-bit ASNs in the Routing Table:                  180291
Number of bogon 32-bit ASNs visible in the Routing Table:            31
Special use prefixes present in the Routing Table:                    1
Prefixes being announced from unallocated address space:            482
Number of addresses announced to Internet:                   3047904768
    Equivalent to 181 /8s, 171 /16s and 86 /24s
    Percentage of available address space announced:               82.3
    Percentage of allocated address space announced:               82.3
    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:      309993

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

Prefixes being announced by APNIC Region ASes:                   251384
    Total APNIC prefixes after maximum aggregation:               72650
    APNIC Deaggregation factor:                                    3.46
Prefixes being announced from the APNIC address blocks:          244273
    Unique aggregates announced from the APNIC address blocks:    99891
APNIC Region origin ASes present in the Internet Routing Table:   13929
    APNIC Prefixes per ASN:                                       17.54
APNIC Region origin ASes announcing only one prefix:               4198
APNIC Region transit ASes present in the Internet Routing Table:   1879
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:   9286
Number of APNIC addresses announced to Internet:              774863744
    Equivalent to 46 /8s, 47 /16s and 123 /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:                    273579
    Total ARIN prefixes after maximum aggregation:               123863
    ARIN Deaggregation factor:                                     2.21
Prefixes being announced from the ARIN address blocks:           278451
    Unique aggregates announced from the ARIN address blocks:    132047
ARIN Region origin ASes present in the Internet Routing Table:    19070
    ARIN Prefixes per ASN:                                        14.60
ARIN Region origin ASes announcing only one prefix:                6940
ARIN Region transit ASes present in the Internet Routing Table:    1961
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:    4833
Number of ARIN addresses announced to Internet:              1272419072
    Equivalent to 75 /8s, 215 /16s and 147 /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:                    261973
    Total RIPE prefixes after maximum aggregation:               125120
    RIPE Deaggregation factor:                                     2.09
Prefixes being announced from the RIPE address blocks:           256625
    Unique aggregates announced from the RIPE address blocks:    161090
RIPE Region origin ASes present in the Internet Routing Table:    28524
    RIPE Prefixes per ASN:                                         9.00
RIPE Region origin ASes announcing only one prefix:               12130
RIPE Region transit ASes present in the Internet Routing Table:    3959
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:   11546
Number of RIPE addresses announced to Internet:               714401664
    Equivalent to 42 /8s, 148 /16s and 231 /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:                  120305
    Total LACNIC prefixes after maximum aggregation:              28828
    LACNIC Deaggregation factor:                                   4.17
Prefixes being announced from the LACNIC address blocks:         118991
    Unique aggregates announced from the LACNIC address blocks:   49521
LACNIC Region origin ASes present in the Internet Routing Table:  11058
    LACNIC Prefixes per ASN:                                      10.76
LACNIC Region origin ASes announcing only one prefix:              2639
LACNIC Region transit ASes present in the Internet Routing Table:  2387
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:  8907
Number of LACNIC addresses announced to Internet:             178120704
    Equivalent to 10 /8s, 157 /16s and 232 /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:                  30632
    Total AfriNIC prefixes after maximum aggregation:              6063
    AfriNIC Deaggregation factor:                                  5.05
Prefixes being announced from the AfriNIC address blocks:         40158
    Unique aggregates announced from the AfriNIC address blocks:  12889
AfriNIC Region origin ASes present in the Internet Routing Table:  1819
    AfriNIC Prefixes per ASN:                                     22.08
AfriNIC Region origin ASes announcing only one prefix:              650
AfriNIC Region transit ASes present in the Internet Routing Table:  356
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: 1160
Number of AfriNIC addresses announced to Internet:            107815680
    Equivalent to 6 /8s, 109 /16s and 35 /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        9801       8740      56  CHINAMOBILE-CN China Mobile Communicati
  7545        5679        784     687  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4923       4192      75  ERX-CERNET-BKB China Education and Rese
 18403        4571        347      25  FPT-AS-AP FPT Telecom Company, VN
  7552        3865       1330      20  VIETEL-AS-AP Viettel Group, VN
  7713        3592       1043      64  TELKOMNET-AS-AP PT Telekomunikasi Indon
  9498        3445        499     256  BBIL-AP BHARTI Airtel Ltd., IN
 45899        3276       1872      99  VNPT-AS-VN VNPT Corp, VN
 24560        2682        859     361  AIRTELBROADBAND-AS-AP Bharti Airtel Ltd
  4766        2295      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        9489      11202    3385  AMAZON-02, US
 11492        4567        303     671  CABLEONE, US
  7155        4177        288      96  VIASAT-SP-BACKBONE, US
  6327        3569       1319      69  SHAW, CA
 22773        3517       3060     305  ASN-CXA-ALL-CCI-22773-RDC, US
 16625        3266       1427    2338  AKAMAI-AS, US
   749        3161      54929    2413  DNIC-AS-00749, US
   367        2969       3829    1433  DNIC-ASBLK-00306-00371, US
396982        2746       3639     390  GOOGLE-CLOUD-PLATFORM, US
  7018        2515      23622    1579  ATT-INTERNET4, 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        7561       1714     146  UNI2-AS, ES
 39891        4658        280      55  ALJAWWALSTC-AS, SA
 20940        4001       3396     134  AKAMAI-ASN1, NL
  9009        3329        288    1599  M247, RO
 12389        2987       2302     914  ROSTELECOM-AS, RU
  8551        2806        368      35  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 34984        2327        359     600  TELLCOM-AS, TR
 13188        1607        100      26  TRIOLAN, UA
 58224        1509        867     579  TCI, IR
  8452        1484       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       12320       3379     609  UNINET, MX
 10620        3527        497     884  Telmex Colombia S.A., CO
 13999        2494        338     637  Mega Cable, S.A. de C.V., MX
 11830        2006        369      64  Instituto Costarricense de Electricidad
 28573        1343       2319     238  Claro NXT Telecomunicacoes Ltda, BR
  3816        1305        787     197  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
  6503        1237        340     498  Axtel, S.A.B. de C.V., MX
 11664        1118        178     424  Techtel LMDS Comunicaciones Interactiva
  6147        1089        369      22  Telefonica del Peru S.A.A., PE
 22884        1077        116     377  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        1527        389      16  LINKdotNET-AS, EG
 36992        1363       1518     281  ETISALAT-MISR, EG
 36903        1249        554      96  MT-MPLS, MA
 29571        1087         70      55  ORANGE-COTE-IVOIRE, CI
 36935         935        521      42  Vodafone-, EG
  6713         551       1861      34  IAM-AS, MA
 15399         539         56      54  WANANCHI-, KE
 36914         532         82       3  KENET-AS, KE
 24757         483         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       12320       3379     609  UNINET, MX
  9808        9801       8740      56  CHINAMOBILE-CN China Mobile Communicati
 16509        9489      11202    3385  AMAZON-02, US
 12479        7561       1714     146  UNI2-AS, ES
  7545        5679        784     687  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4923       4192      75  ERX-CERNET-BKB China Education and Rese
 39891        4658        280      55  ALJAWWALSTC-AS, SA
 18403        4571        347      25  FPT-AS-AP FPT Telecom Company, VN
 11492        4567        303     671  CABLEONE, US
  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        9801         9745  CHINAMOBILE-CN China Mobile Communications Grou
 12479        7561         7415  UNI2-AS, ES
 16509        9489         6104  AMAZON-02, US
  7545        5679         4992  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4923         4848  ERX-CERNET-BKB China Education and Research Net
 39891        4658         4603  ALJAWWALSTC-AS, SA
 18403        4571         4546  FPT-AS-AP FPT Telecom Company, VN
  7155        4177         4081  VIASAT-SP-BACKBONE, US
 11492        4567         3896  CABLEONE, US
 20940        4001         3867  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
     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
     19589  UNALLOCATED  8.19.242.0/24            23314  ORLANDOTELCO, US
     19589  UNALLOCATED  8.19.248.0/24            23314  ORLANDOTELCO, 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

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
23.169.168.0/24      Origin:    151188  M4NIC-AS-AP 404 Network Information Co.,
23.169.168.0/24     Transit:    202400  TAIPEI101-NETWORK-LLC, GB
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

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      /11:99      /12:300     
/13:579     /14:1195    /15:2068    /16:13455   /17:8244    /18:13806   
/19:25069   /20:44427   /21:51917   /22:110833  /23:99044   /24:567149  
/25:728     /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        6646        7561  UNI2-AS, ES
  8151        6304       12320  UNINET, MX
 11492        3481        4567  CABLEONE, US
  6327        3374        3569  SHAW, CA
 39891        3340        4658  ALJAWWALSTC-AS, SA
  7155        3121        4177  VIASAT-SP-BACKBONE, US
 22773        2553        3517  ASN-CXA-ALL-CCI-22773-RDC, US
  8551        2282        2806  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
 10620        2130        3527  Telmex Colombia S.A., CO
 30036        2129        2472  MEDIACOM-ENTERPRISE-BUSINESS, US

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

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

   1:2326      2:1475      3:284       4:5         5:4430      6:163    
   7:6         8:1532      9:1        11:172      12:1483     13:373    
  14:2377     15:310      16:203      17:363      18:715      20:348    
  21:4        22:188      23:6614     24:2692     25:2        27:2514   
  29:19       31:2549     32:54       34:35       35:122      36:2142   
  37:4489     38:5969     39:888      40:149      41:4172     42:2219   
  43:2324     44:324      45:16776    46:4307     47:284      49:1912   
  50:1894     51:574      52:1592     54:361      55:860      56:5      
  57:134      58:1946     59:1208     60:1016     61:2583     62:2726   
  63:1910     64:5513     65:2335     66:4924     67:3044     68:1335   
  69:4087     70:1179     71:579      72:2912     74:2652     75:1554   
  76:625      77:2335     78:1829     79:2578     80:2131     81:1902   
  82:1522     83:1267     84:1642     85:3085     86:774      87:1960   
  88:1221     89:3963     90:659      91:7908     92:2177     93:2639   
  94:3601     95:4020     96:1289     97:318      98:1019     99:745    
 100:96      101:1179    102:3047    103:32545   104:4793    105:600    
 106:920     107:2747    108:1123    109:4048    110:2140    111:3189   
 112:2094    113:1796    114:1759    115:1972    116:1978    117:2634   
 118:2763    119:1946    120:1804    121:1324    122:2650    123:2216   
 124:1599    125:2839    126:28      128:1466    129:913     130:1068   
 131:1924    132:822     133:410     134:1708    135:308     136:921    
 137:1002    138:2769    139:1581    140:1308    141:1349    142:1545   
 143:1526    144:1004    145:343     146:1991    147:1660    148:2507   
 149:2435    150:1019    151:1307    152:1874    153:528     154:5622   
 155:1371    156:2098    157:1400    158:1087    159:2212    160:2601   
 161:1627    162:3605    163:1675    164:1630    165:2094    166:1079   
 167:1707    168:3837    169:794     170:4685    171:1012    172:3776   
 173:3009    174:898     175:1215    176:3627    177:4593    178:3523   
 179:2221    180:2363    181:3656    182:3462    183:2019    184:2279   
 185:20537   186:4787    187:4349    188:4007    189:3979    190:9309   
 191:1478    192:11030   193:8977    194:7366    195:5225    196:3180   
 197:2619    198:6003    199:7025    200:8074    201:6335    202:10485  
 203:10091   204:4595    205:3698    206:4443    207:3522    208:4111   
 209:4944    210:4614    211:2596    212:4225    213:3403    214:1108   
 215:44      216:6781    217:2773    218:1341    219:588     220:2049   
 221:1023    222:869     223:2226   

End of report


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