IPv6 R&E Routing Table Report   22:20 GMT Mon 23 Mar, 2026

  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:                                1956
    Number of IPv6 prefixes with a valid ROA:                      1202
    Number of IPv6 prefixes with an invalid ROA:                      0
    Number of IPv6 prefixes with no ROA:                            754
Total ASNs present in the IPv6 Routing Table:                       981
    Average AS path length:                                         3.7
    Longest AS path:                                                 15
Total Origin ASNs present in the IPv6 Routing Table:                945
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      /30:19      /31:1       /32:376     /33:30      
/34:18      /35:18      /36:63      /37:13      /38:14      /39:2       
/40:113     /41:6       /42:9       /43:2       /44:71      /45:14      
/46:10      /47:13      /48:1094    /49:0       /50:0       /51:0       
/52:0       /53:0       /54:0       /55:0       /56:3       /57:2       
/58:0       /59:0       /60:0       /61:0       /62:0       /63:0       
/64:0       

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

       ASN No of Nets  Description
      7497        163  CSTNET-AS-AP Computer Network Information Center of Chine
     55824         90  NKN-CORE-NW NKN Core Network, IN
      4758         59  NICNET-VSNL-BOARDER-AP National Informatics Centre, IN
     61468         31  CEDIA, EC
      3477         24  NOAA-NWAVE - National Oceanic and Atmospheric Administrat
       680         23  DFN Verein zur Foerderung eines Deutschen Forschungsnetze
       271         19  BCNET-AS - BCNET, CA
      2152         19  CENIC-2152 - CENIC, 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 - Argonne National Laboratory, US
      2018         14  TENET-1, ZA
      8895         13  ISU Internet Services Unit ISU, SA
       237          9  MERIT-AS-14 - Merit Network Inc., US
       559          9  SWITCH Switch, Swiss Academic and Research Network, CH
      7575          9  AARNET-AS-AP Australian Academic and Research Network AAR
         3          8  MIT-GATEWAYS - Massachusetts Institute of Technology, US
     27947          8  Telconet S.A, EC
     30045          8  UHN-ASN - University Health Network, CA

End of report