[cmNOG] Weekly Global IPv4 Routing Table Report

Routing Table Analysis Role Account cscora at apnic.net
Fri Feb 17 18:03:46 UTC 2023


This is an automated weekly mailing describing the state of the Global
IPv4 Routing Table as seen from APNIC's router in Japan.

The posting is sent to APOPS, NANOG, AfNOG, SANOG, PacNOG, SAFNOG
TZNOG, MENOG, BJNOG, SDNOG, CMNOG, LACNOG and the RIPE Routing WG.

Daily listings are sent to bgp-stats at lists.apnic.net.

For historical data, please see https://thyme.apnic.net.

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

IPv4 Routing Table Report   04:00 +10GMT Sat 18 Feb, 2023

  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:                              920998
    Prefixes after maximum aggregation (per Origin AS):          348514
    Deaggregation factor:                                          2.64
    Unique aggregates announced (without unneeded subnets):      446349
Total ASes present in the Internet Routing Table:                 74146
    Prefixes per ASN:                                             12.42
Origin-only ASes present in the Internet Routing Table:           63618
Origin ASes announcing only one prefix:                           26104
Transit ASes present in the Internet Routing Table:               10528
Transit-only ASes present in the Internet Routing Table:            443
Average AS path length visible in the Internet Routing Table:       4.2
    Max AS path length visible:                                      55
    Max AS path prepend of ASN (265020)                              50
Prefixes from unregistered ASNs in the Routing Table:              1061
    Number of instances of unregistered ASNs:                      1071
Number of 32-bit ASNs allocated by the RIRs:                      41203
Number of 32-bit ASNs visible in the Routing Table:               34191
Prefixes from 32-bit ASNs in the Routing Table:                  167381
Number of bogon 32-bit ASNs visible in the Routing Table:            29
Special use prefixes present in the Routing Table:                    1
Prefixes being announced from unallocated address space:            589
Number of addresses announced to Internet:                   3063279232
    Equivalent to 182 /8s, 149 /16s and 238 /24s
    Percentage of available address space announced:               82.7
    Percentage of allocated address space announced:               82.7
    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:      312783

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

Prefixes being announced by APNIC Region ASes:                   241118
    Total APNIC prefixes after maximum aggregation:               69086
    APNIC Deaggregation factor:                                    3.49
Prefixes being announced from the APNIC address blocks:          235992
    Unique aggregates announced from the APNIC address blocks:    97957
APNIC Region origin ASes present in the Internet Routing Table:   13308
    APNIC Prefixes per ASN:                                       17.73
APNIC Region origin ASes announcing only one prefix:               3861
APNIC Region transit ASes present in the Internet Routing Table:   1781
Average APNIC Region AS path length visible:                        4.5
    Max APNIC Region AS path length visible:                         26
Number of APNIC region 32-bit ASNs visible in the Routing Table:   8581
Number of APNIC addresses announced to Internet:              773670912
    Equivalent to 46 /8s, 29 /16s and 72 /24s
APNIC AS Blocks        4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations)  23552-24575, 37888-38911, 45056-46079, 55296-56319,
                       58368-59391, 63488-64098, 64297-64395, 131072-151865
APNIC Address Blocks     1/8,  14/8,  27/8,  36/8,  39/8,  42/8,  43/8,
                        49/8,  58/8,  59/8,  60/8,  61/8, 101/8, 103/8,
                       106/8, 110/8, 111/8, 112/8, 113/8, 114/8, 115/8,
                       116/8, 117/8, 118/8, 119/8, 120/8, 121/8, 122/8,
                       123/8, 124/8, 125/8, 126/8, 133/8, 150/8, 153/8,
                       163/8, 171/8, 175/8, 180/8, 182/8, 183/8, 202/8,
                       203/8, 210/8, 211/8, 218/8, 219/8, 220/8, 221/8,
                       222/8, 223/8,

ARIN Region Analysis Summary
----------------------------

Prefixes being announced by ARIN Region ASes:                    267489
    Total ARIN prefixes after maximum aggregation:               121496
    ARIN Deaggregation factor:                                     2.20
Prefixes being announced from the ARIN address blocks:           269494
    Unique aggregates announced from the ARIN address blocks:    130285
ARIN Region origin ASes present in the Internet Routing Table:    19064
    ARIN Prefixes per ASN:                                        14.14
ARIN Region origin ASes announcing only one prefix:                6961
ARIN Region transit ASes present in the Internet Routing Table:    1958
Average ARIN Region AS path length visible:                         3.7
    Max ARIN Region AS path length visible:                          35
Number of ARIN region 32-bit ASNs visible in the Routing Table:    4737
Number of ARIN addresses announced to Internet:              1286207232
    Equivalent to 76 /8s, 169 /16s and 247 /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:                    264849
    Total RIPE prefixes after maximum aggregation:               122896
    RIPE Deaggregation factor:                                     2.16
Prefixes being announced from the RIPE address blocks:           261359
    Unique aggregates announced from the RIPE address blocks:    156643
RIPE Region origin ASes present in the Internet Routing Table:    28233
    RIPE Prefixes per ASN:                                         9.26
RIPE Region origin ASes announcing only one prefix:               12037
RIPE Region transit ASes present in the Internet Routing Table:    3961
Average RIPE Region AS path length visible:                         4.2
    Max RIPE Region AS path length visible:                          30
Number of RIPE region 32-bit ASNs visible in the Routing Table:   11029
Number of RIPE addresses announced to Internet:               718495360
    Equivalent to 42 /8s, 211 /16s and 94 /24s
RIPE AS Blocks         1877-1901, 2043, 2047, 2107-2136, 2585-2614
(pre-ERX allocations)  2773-2822, 2830-2879, 3154-3353, 5377-5631
                       6656-6911, 8192-9215, 12288-13311, 15360-16383
                       20480-21503, 24576-25599, 28672-29695
                       30720-31743, 33792-35839, 38912-39935
                       40960-45055, 47104-52223, 56320-58367
                       59392-61439, 61952-62463, 64396-64495
                       196608-213403
RIPE Address Blocks      2/8,   5/8,  25/8,  31/8,  37/8,  46/8,  51/8,
                        62/8,  77/8,  78/8,  79/8,  80/8,  81/8,  82/8,
                        83/8,  84/8,  85/8,  86/8,  87/8,  88/8,  89/8,
                        90/8,  91/8,  92/8,  93/8,  94/8,  95/8, 109/8,
                       141/8, 145/8, 151/8, 176/8, 178/8, 185/8, 188/8,
                       193/8, 194/8, 195/8, 212/8, 213/8, 217/8,

LACNIC Region Analysis Summary
------------------------------

Prefixes being announced by LACNIC Region ASes:                  117347
    Total LACNIC prefixes after maximum aggregation:              28511
    LACNIC Deaggregation factor:                                   4.12
Prefixes being announced from the LACNIC address blocks:         116612
    Unique aggregates announced from the LACNIC address blocks:   48926
LACNIC Region origin ASes present in the Internet Routing Table:  10969
    LACNIC Prefixes per ASN:                                      10.63
LACNIC Region origin ASes announcing only one prefix:              2647
LACNIC Region transit ASes present in the Internet Routing Table:  2278
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:  8779
Number of LACNIC addresses announced to Internet:             176456448
    Equivalent to 10 /8s, 132 /16s and 131 /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:                  29134
    Total AfriNIC prefixes after maximum aggregation:              5752
    AfriNIC Deaggregation factor:                                  5.07
Prefixes being announced from the AfriNIC address blocks:         36952
    Unique aggregates announced from the AfriNIC address blocks:  12080
AfriNIC Region origin ASes present in the Internet Routing Table:  1722
    AfriNIC Prefixes per ASN:                                     21.46
AfriNIC Region origin ASes announcing only one prefix:              598
AfriNIC Region transit ASes present in the Internet Routing Table:  335
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: 1065
Number of AfriNIC addresses announced to Internet:            108095744
    Equivalent to 6 /8s, 113 /16s and 105 /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        9453       8884      51  CHINAMOBILE-CN China Mobile Communicati
  7545        5819        787     693  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4860       4192      75  ERX-CERNET-BKB China Education and Rese
  7713        3531       1043      65  TELKOMNET-AS-AP PT Telekomunikasi Indon
  7552        3430       1331      21  VIETEL-AS-AP Viettel Group, VN
 45899        3381       1874      96  VNPT-AS-VN VNPT Corp, VN
  9498        2775        499     238  BBIL-AP BHARTI Airtel Ltd., IN
  4766        2531      11251     591  KIXS-AS-KR Korea Telecom, KR
 24560        2355        836     442  AIRTELBROADBAND-AS-AP Bharti Airtel Ltd
 45090        2184       1438      79  TENCENT-NET-AP Shenzhen Tencent Compute

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        7968      10732    2865  AMAZON-02, US
 11492        4535        300     597  CABLEONE, US
  7155        3962        279      45  VIASAT-SP-BACKBONE, US
 22773        3654       3063     287  ASN-CXA-ALL-CCI-22773-RDC, US
  6327        3503       1320      63  SHAW, CA
 16625        3307       1668    2421  AKAMAI-AS, US
   749        3036      50571    2303  DNIC-AS-00749, US
396982        2605       3583     352  GOOGLE-CLOUD-PLATFORM, US
  7018        2598      24143    1576  ATT-INTERNET4, US
 30036        2555        366     365  MEDIACOM-ENTERPRISE-BUSINESS, 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        7075       1706     146  UNI2-AS, ES
  9121        5939       1692      17  TTNET, TR
 39891        4561        269      58  ALJAWWALSTC-AS, SA
 20940        4005       3399     175  AKAMAI-ASN1, NL
  8551        3893        370      37  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 12389        2951       2292     911  ROSTELECOM-AS, RU
  9009        2653        253    1377  M247, RO
 47331        2474        378    1865  TTNET, TR
 34984        2264        359     608  TELLCOM-AS, TR
  6849        2256        339      19  UKRTELNET, UA

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       11135       3348     587  Uninet S.A. de C.V., MX
 10620        3476        507     862  Telmex Colombia S.A., CO
 11830        2258        369      64  Instituto Costarricense de Electricidad
 13999        2257        375     606  Mega Cable, S.A. de C.V., MX
 28573        1349       2328     261  Claro NXT Telecomunicacoes Ltda, BR
  6503        1297        339     517  Axtel, S.A.B. de C.V., MX
  3816        1292        746     156  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
  6147        1151        370      22  Telefonica del Peru S.A.A., PE
 11664        1099        180     456  Techtel LMDS Comunicaciones Interactiva
 26615        1019       2498      45  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        1542        533      30  RAYA-AS, EG
 24863        1495        393      21  LINKdotNET-AS, EG
 36992        1348       1517     277  ETISALAT-MISR, EG
 36903        1242        550      99  MT-MPLS, MA
 29571        1000         67      53  ORANGE-COTE-IVOIRE, CI
 36935         886        520      42  Vodafone-, EG
  6713         549       1861      34  IAM-AS, MA
 15399         526         54      46  WANANCHI-, KE
 24757         497         73       5  EthioNet-AS, ET
 37342         488         32       1  MOVITEL, MZ

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       11135       3348     587  Uninet S.A. de C.V., MX
  9808        9453       8884      51  CHINAMOBILE-CN China Mobile Communicati
 16509        7968      10732    2865  AMAZON-02, US
 12479        7075       1706     146  UNI2-AS, ES
  9121        5939       1692      17  TTNET, TR
  7545        5819        787     693  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4860       4192      75  ERX-CERNET-BKB China Education and Rese
 39891        4561        269      58  ALJAWWALSTC-AS, SA
 11492        4535        300     597  CABLEONE, US
 20940        4005       3399     175  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        9453         9402  CHINAMOBILE-CN China Mobile Communications Grou
 12479        7075         6929  UNI2-AS, ES
  9121        5939         5922  TTNET, TR
  7545        5819         5126  TPG-INTERNET-AP TPG Telecom Limited, AU
 16509        7968         5103  AMAZON-02, US
  4538        4860         4785  ERX-CERNET-BKB China Education and Research Net
 39891        4561         4503  ALJAWWALSTC-AS, SA
 11492        4535         3938  CABLEONE, US
  7155        3962         3917  VIASAT-SP-BACKBONE, US
  8551        3893         3856  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo

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
      3507  UNALLOCATED  5.105.166.0/24          213035  AS-SERVERION Serverion B.V.,
     33123  UNALLOCATED  8.10.69.0/24             11168  SCC, US
     16641  UNALLOCATED  8.10.194.0/24             3356  LEVEL3, US
     16641  UNALLOCATED  8.10.210.0/24             3356  LEVEL3, US
     16641  UNALLOCATED  8.12.250.0/24             3356  LEVEL3, US
     12169  UNALLOCATED  8.15.207.0/24            32787  PROLEXIC-TECHNOLOGIES-DDOS-M
     53775  UNALLOCATED  8.20.88.0/24              7029  WINDSTREAM, US
     62828  UNALLOCATED  8.21.130.0/24             3356  LEVEL3, US
      1618  UNALLOCATED  8.21.143.0/24           136796  CL-JP-AS CORELINK JAPAN, JP
    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
23.131.185.0/24      Origin:       174  COGENT-174, US
23.131.185.0/24     Transit:      2516  KDDI KDDI CORPORATION, JP
23.131.186.0/24      Origin:       174  COGENT-174, US
23.131.186.0/24     Transit:      2516  KDDI KDDI CORPORATION, JP
23.131.187.0/24      Origin:       174  COGENT-174, US
23.131.187.0/24     Transit:      2516  KDDI KDDI CORPORATION, JP
23.131.188.0/24      Origin:       174  COGENT-174, US
23.131.188.0/24     Transit:      2516  KDDI KDDI CORPORATION, JP
23.136.112.0/24      Origin:     54835  UNASSIGNED
23.136.112.0/24     Transit:     21559  OSNET, PR

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

Number of prefixes announced per prefix length (Global)
-------------------------------------------------------

 /1:0        /2:0        /3:0        /4:0        /5:0        /6:0       
 /7:0        /8:16       /9:13      /10:39      /11:103     /12:299     
/13:580     /14:1202    /15:2039    /16:13479   /17:8292    /18:13862   
/19:25220   /20:44334   /21:52315   /22:110409  /23:98277   /24:549699  
/25:820     /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        6135        7075  UNI2-AS, ES
  8151        5140       11135  Uninet S.A. de C.V., MX
  9121        5117        5939  TTNET, TR
 39891        3552        4561  ALJAWWALSTC-AS, SA
 11492        3451        4535  CABLEONE, US
  8551        3365        3893  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
  6327        3311        3503  SHAW, CA
  7155        3037        3962  VIASAT-SP-BACKBONE, US
 22773        2704        3654  ASN-CXA-ALL-CCI-22773-RDC, US
 30036        2212        2555  MEDIACOM-ENTERPRISE-BUSINESS, US

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

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

   1:1683      2:1239      3:168       4:5         5:4333      6:114    
   7:5         8:1551      9:1        11:172      12:1586     13:383    
  14:2346     15:293      16:103      17:366      18:397      20:248    
  21:4        22:188      23:6057     24:2499     25:4        27:2516   
  29:19       31:2498     32:107      34:9        35:106      36:1905   
  37:4638     38:4163     39:841      40:153      41:4038     42:1071   
  43:2338     44:303      45:16390    46:4220     47:382      49:1749   
  50:1834     51:383      52:1575     54:397      55:852      56:8      
  57:87       58:1743     59:1167     60:985      61:2439     62:2632   
  63:1931     64:5671     65:2326     66:4931     67:3047     68:1348   
  69:4155     70:1264     71:661      72:2991     74:2602     75:1458   
  76:607      77:2408     78:3827     79:3172     80:2079     81:1859   
  82:1495     83:1245     84:1528     85:3704     86:758      87:1972   
  88:2783     89:3616     90:609      91:7673     92:2011     93:2598   
  94:3530     95:4838     96:1334     97:346      98:1161     99:744    
 100:75      101:1065    102:2566    103:30964   104:4570    105:485    
 106:855     107:2525    108:918     109:4396    110:2083    111:3331   
 112:2044    113:1550    114:1617    115:2023    116:1903    117:2542   
 118:2292    119:1943    120:1769    121:1115    122:2601    123:2187   
 124:1605    125:2406    128:1322    129:1073    130:997     131:1986   
 132:798     133:411     134:1908    135:297     136:861     137:931    
 138:2557    139:1545    140:1182    141:1478    142:1424    143:1476   
 144:1211    145:347     146:1877    147:1558    148:2288    149:1905   
 150:867     151:1141    152:1843    153:481     154:3934    155:1420   
 156:1679    157:1298    158:1007    159:2264    160:2540    161:1450   
 162:3545    163:1539    164:1593    165:1673    166:855     167:1719   
 168:3848    169:923     170:4582    171:885     172:3498    173:2977   
 174:1034    175:1163    176:3735    177:4568    178:3579    179:2151   
 180:2377    181:3405    182:3288    183:1933    184:2341    185:20047  
 186:4648    187:3964    188:4140    189:3526    190:9129    191:1452   
 192:10944   193:8832    194:7259    195:5119    196:3056    197:2401   
 198:5953    199:6101    200:7743    201:5877    202:10659   203:10022  
 204:4608    205:3529    206:3856    207:3445    208:4083    209:4844   
 210:4452    211:2501    212:4127    213:3560    214:1093    215:55     
 216:6605    217:2641    218:1278    219:573     220:2018    221:973    
 222:866     223:2148   

End of report


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