AS204921 YunZheng-Network zhenyun sun

YunZheng-Network zhenyun sun · registered in the United Kingdom

IPv4 addresses1,0241 prefixes · <0.001% of announced IPv4

Rank in United Kingdom#1,020largest network in GB by IPv4 space, of 2,074 · <0.01% of GB

Rank worldwide#35,441of 79,396 networks with IPv4

IPv628 x /4813 prefixes

CountryUnited Kingdom2,261 ASNs registered there

Open AS204921 in ASN lookup Look up an IP in this network (177.177.80.1) All networks in United Kingdom

IPv4 prefixes

All 1 prefix, in address order.

177.177.80.0/22

IPv6 prefixes

All 13 prefixes.

2602:f3ff:83::/48
2a0e:aa07:e250::/46
2a0e:aa07:e254::/47
2a0e:aa07:e256::/48
2a0e:aa07:e257::/48
2a0e:aa07:e258::/46
2a0e:aa07:e25c::/46
2a12:cb41:801::/48
2a12:cb41:802::/47
2a12:cb41:804::/47
2a12:cb41:806::/48
2a12:cb41:808::/46
2a12:cb41:80c::/48

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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