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AS137721 China Internet Network Information Center

AS137721-13 - China Internet Network Information Center · registered in China

IPv4 addresses00 prefixes · 0.000% of announced IPv4
IPv61 x /32 (65,536 x /48)1 prefixes
CountryChina5,117 ASNs registered there
Open AS137721 in ASN lookup Look up an IP in this network (2406:e3c0::1) All networks in China

IPv6 prefixes

All 1 prefix.

  • 2406:e3c0::/32

Other ASNs named China Internet Network Information Center

8 other networks use the same organisation name; together with AS137721 they announce 11,264 IPv4 addresses.

ASNNameIPv4 addresses
AS151300AS151300-85 - China Internet Network Information Center CN6,144
AS63570AS63570-41 - China Internet Network Information Center CN2,048
AS137745AS137745-37 - China Internet Network Information Center CN1,024
AS137746AS137746-38 - China Internet Network Information Center CN768
AS151243AS151243-28 - China Internet Network Information Center CN512
AS131541AS131541-61 - China Internet Network Information Center CN256
AS151245AS151245-30 - China Internet Network Information Center CN256
AS151284AS151284-69 - China Internet Network Information Center CN256

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