IPv6 R&E Routing Table Report 20:10 GMT Wed 28 Jan, 2026 IPv6 BGP Table (R&E) as seen at CERNET. Report Website: https://bgp.nsrc.org/REN Detailed Analysis: https://bgp.nsrc.org/REN/CERNET/ Analysis Summary ---------------- BGP routing table entries examined: 1820 Number of IPv6 prefixes with a valid ROA: 1203 Number of IPv6 prefixes with an invalid ROA: 12 Number of IPv6 prefixes with no ROA: 605 Total ASNs present in the IPv6 Routing Table: 916 Average AS path length: 5.4 Longest AS path: 15 Total Origin ASNs present in the IPv6 Routing Table: 871 Paths with bogon ASNs present in the IPv6 Routing Table: 1 IPv6 Subnet Table ----------------- /16:0 /17:0 /18:0 /19:0 /20:1 /21:0 /22:0 /23:0 /24:3 /25:1 /26:0 /27:0 /28:5 /29:53 /30:14 /31:1 /32:382 /33:28 /34:14 /35:19 /36:61 /37:13 /38:12 /39:2 /40:114 /41:6 /42:10 /43:2 /44:63 /45:17 /46:11 /47:9 /48:979 /49:0 /50:0 /51:0 /52:0 /53:0 /54:0 /55:0 /56:0 /57:0 /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 8075 101 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US 55824 91 NKN-CORE-NW NKN Core Network, IN 4758 64 NICNET-VSNL-BOARDER-AP National Informatics Centre, IN 8068 35 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US 61468 33 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 2018 14 TENET-1, ZA 8070 12 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US 63800 10 SERVER-G SERVER-G Group, JP 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 12654 9 RIPE-NCC-RIS-AS Reseaux IP Europeens Network Coordination 3 8 MIT-GATEWAYS - Massachusetts Institute of Technology, US End of report