AS63771 Border Gateway Protocol Network Analysis Project

BGPNAP - Border Gateway Protocol Network Analysis Project · registered in Japan

IPv4 addresses2,0482 prefixes · <0.001% of announced IPv4

Rank in Japan#452largest network in JP by IPv4 space, of 724 · <0.01% of JP

Rank worldwide#21,770of 79,396 networks with IPv4

IPv61 x /32 (65,536 x /48)1 prefixes

CountryJapan745 ASNs registered there

Open AS63771 in ASN lookup Look up an IP in this network (103.96.64.1) All networks in Japan

IPv4 prefixes

All 2 prefixes, in address order.

103.96.64.0/22
202.223.56.0/22

IPv6 prefixes

All 1 prefix.

2401:7640::/32

Other ASNs named Border Gateway Protocol Network Analysis Project

1 other network uses the same organisation name; together with AS63771 they announce 2,048 IPv4 addresses.

ASNNameIPv4 addresses

AS63778BGPNAP2 - Border Gateway Protocol Network Analysis Project JPIPv6 only

Similar-sized networks in Japan

ASNNameIPv4 addresses

AS24262#449 HIcom - HAMANASU INFORMATION Co., Ltd.2,048

AS37912#450 IPRIO-JP - IPRIO Corporation.2,048

AS59105#451 HOMENOC - Home NOC Operators Group2,048

AS63774#453 KAMOIKE-NET - Kamoike.net LLP2,048

AS131971#454 AS131971-67 - JPNIC-4Byte-ASBLOCK-AP2,048

AS131986#455 BB4U-NET - ITOCHU Cable Systems Corp.2,048

IP-to-ASN data: iptoasn.com (public domain). Snapshot downloaded 2026-11-11, refreshed daily. Ranges are what each network announces in BGP, not registry allocations. Data sources