[REN-BGP-stats-all] IPv6 R&E Routing Table Report - ESnet (R&E) view

Sat Jul 19 22:21:09 UTC 2025

IPv6 R&E Routing Table Report   22:20 GMT Sat 19 Jul, 2025

  IPv6 BGP Table (R&E) as seen at ESnet.

Report Website:     https://bgp.nsrc.org/REN
Detailed Analysis:  https://bgp.nsrc.org/REN/ESnet/

Analysis Summary
----------------

BGP routing table entries examined:                                2185
    Number of IPv6 prefixes with a valid ROA:                      1169
    Number of IPv6 prefixes with an invalid ROA:                    202
    Number of IPv6 prefixes with no ROA:                            814
Total ASNs present in the IPv6 Routing Table:                       959
    Average AS path length:                                         3.5
    Longest AS path:                                                 18
Total Origin ASNs present in the IPv6 Routing Table:                922
Paths with bogon ASNs present in the IPv6 Routing Table:              0

IPv6 Subnet Table
-----------------

/16:0       /17:0       /18:0       /19:0       /20:1       /21:0       
/22:0       /23:0       /24:2       /25:0       /26:0       /27:0       
/28:6       /29:55      /30:16      /31:0       /32:381     /33:30      
/34:18      /35:20      /36:65      /37:17      /38:14      /39:2       
/40:114     /41:7       /42:9       /43:2       /44:109     /45:14      
/46:11      /47:12      /48:1102    /49:0       /50:0       /51:0       
/52:0       /53:0       /54:0       /55:0       /56:12      /57:2       
/58:0       /59:1       /60:2       /61:0       /62:0       /63:3       
/64:63      

Global IPv6 Per AS prefix count summary
---------------------------------------

       ASN No of Nets  Description
       293        184  ESNET, US
      7497        161  CSTNET-AS-AP Computer Network Information Center of Chine
     55824         93  NKN-CORE-NW NKN Core Network, IN
     45773         63  HECPERN-AS-PK PERN AS Content Servie Provider, Islamabad,
      4758         59  NICNET-VSNL-BOARDER-AP National Informatics Centre, IN
     61468         35  CEDIA, EC
      3477         23  NOAA-NWAVE, US
       271         19  BCNET-AS, CA
      2152         18  CENIC-2152, US
      6262         17  CSIRO Commonwealth Scientific and Industrial, AU
     46047         17  POLSRI-AS-ID Politeknik Negeri Sriwijaya, ID
      4608         16  APNIC-SERVICES Asia Pacific Network Information Centre, A
       683         15  ARGONNE-AS, US
      2018         14  TENET-1, ZA
       680         12  DFN Verein zur Foerderung eines Deutschen Forschungsnetze
     24406         12  CNNIC-CRITICAL-AP China Internet Network Infomation Cente
      8895         11  ISU Internet Services Unit ISU, SA
       237          9  MERIT-AS-14, US
       559          9  SWITCH Peering requests: peering at switch.ch, CH
      5501          9  FRAUNHOFER-CLUSTER-BW Research Institutes spread all over

End of report