This is an automated weekly mailing describing the state of the IPv6 Research & Education Routing Table received by NSRC's collector from BDREN. 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 19:05 GMT Sat 18 Jul, 2026 IPv6 BGP Table (R&E) as seen at BDREN. Report Website: https://bgp.nsrc.org/REN Detailed Analysis: https://bgp.nsrc.org/REN/BDREN/ Analysis Summary ---------------- BGP routing table entries examined: 6513 Number of IPv6 prefixes with a valid ROA: 5683 Number of IPv6 prefixes with an invalid ROA: 137 Number of IPv6 prefixes with no ROA: 693 Total ASNs present in the IPv6 Routing Table: 5217 Average AS path length: 5.7 Longest AS path: 11 Total Origin ASNs present in the IPv6 Routing Table: 5176 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 /24:3 /25:0 /26:0 /27:0 /28:8 /29:61 /30:20 /31:1 /32:4525 /33:32 /34:21 /35:24 /36:64 /37:14 /38:16 /39:1 /40:119 /41:6 /42:11 /43:2 /44:116 /45:16 /46:12 /47:15 /48:1274 /49:0 /50:4 /51:0 /52:3 /53:0 /54:0 /55:0 /56:4 /57:0 /58:0 /59:0 /60:6 /61:0 /62:0 /63:0 /64:113 Global IPv6 Per AS prefix count summary --------------------------------------- ASN No of Nets Description 7497 167 CSTNET-AS-AP - Computer Network Information Center of Chi 55824 91 NKN-CORE-NW - NKN Core Network, IN 4758 64 NICNET-VSNL-BOARDER-AP - National Informatics Centre, IN 45773 58 HECPERN-AS-PK - PERN AS Content Servie Provider, Islamaba 61468 30 AS61468 - CEDIA, EC 3477 26 NOAA-NWAVE - National Oceanic and Atmospheric Administrat 680 24 DFN - Verein zur Foerderung eines Deutschen Forschungsnet 271 20 BCNET-AS - BCNET, CA 2152 20 CENIC-2152 - CENIC, US 6262 17 CSIRO - Commonwealth Scientific and Industrial, AU 22644 17 TJUH - Thomas Jefferson University Hospitals, Inc., US 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, 137 15 ASGARR - Consortium GARR, IT 2018 15 TENET (The UNINET Project) - TENET (The UNINET Project), 26397 13 OPTIPUTER - The Regents of the University of California - 3 11 MIT-GATEWAYS - Massachusetts Institute of Technology, US 786 11 JANET - Jisc Services Limited, GB 683 10 ARGONNE-AS - Argonne National Laboratory, US End of report