This is an automated weekly mailing describing the state of the IPv6 Research & Education Routing Table received by NSRC's collector from UbuntuNet Alliance. Daily listings are sent to ren-bgp-stats-all@lists.nsrc.org. For historical data, please see https://bgp.nsrc.org/REN. If you have any comments please contact Philip Smith . IPv6 R&E Routing Table Report 18:20 GMT Sat 21 Mar, 2026 IPv6 BGP Table (R&E) as seen at UbuntuNet Alliance. Report Website: https://bgp.nsrc.org/REN Detailed Analysis: https://bgp.nsrc.org/REN/UbuntuNet/ Analysis Summary ---------------- BGP routing table entries examined: 6122 Number of IPv6 prefixes with a valid ROA: 5279 Number of IPv6 prefixes with an invalid ROA: 0 Number of IPv6 prefixes with no ROA: 843 Total ASNs present in the IPv6 Routing Table: 5165 Average AS path length: 4.8 Longest AS path: 15 Total Origin ASNs present in the IPv6 Routing Table: 5110 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 /29:56 /30:19 /31:1 /32:4495 /33:21 /34:13 /35:18 /36:60 /37:14 /38:12 /39:2 /40:115 /41:7 /42:8 /43:1 /44:69 /45:15 /46:9 /47:14 /48:1148 /49:7 /50:0 /51:0 /52:2 /53:0 /54:0 /55:0 /56:2 /57:0 /58:0 /59:0 /60:3 /61:0 /62:0 /63:2 /64:0 Global IPv6 Per AS prefix count summary --------------------------------------- ASN No of Nets Description 7497 174 CSTNET-AS-AP Computer Network Information Center of Chine 55824 91 NKN-CORE-NW NKN Core Network, IN 4758 59 NICNET-VSNL-BOARDER-AP National Informatics Centre, IN 61468 31 CEDIA, EC 680 24 DFN Verein zur Foerderung eines Deutschen Forschungsnetze 3477 24 NOAA-NWAVE - National Oceanic and Atmospheric Administrat 271 19 BCNET-AS - BCNET, CA 6262 17 CSIRO Commonwealth Scientific and Industrial, AU 24363 17 CNGI-JNN-IX-AS-AP CERNET2 IX at Shandong University, CN 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 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 8674 9 NETNOD-IX Netnod AB, SE 24406 9 CNNIC-CRITICAL-AP China Internet Network Infomation Cente 3 8 MIT-GATEWAYS - Massachusetts Institute of Technology, US 27947 8 Telconet S.A, EC End of report