AS11421 HYW

HYWG-BACKBONE - HYW · registered in the United States

IPv4 addresses1,5366 prefixes · <0.001% of announced IPv4

Rank in United States#6,858largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#26,119of 79,396 networks with IPv4

IPv668 x /486 prefixes

CountryUnited States18,679 ASNs registered there

Open AS11421 in ASN lookup Look up an IP in this network (16.5.55.1) All networks in United States

IPv4 prefixes

All 6 prefixes, in address order.

16.5.55.0/24
23.154.164.0/24
44.30.130.0/24
87.86.22.0/24
87.86.87.0/24
104.247.211.0/24

IPv6 prefixes

All 6 prefixes.

2602:f429:2::/47
2602:f429:20::/43
2602:f429:50::/44
2602:f429:60::/44
2a14:7586:6114::/48
2a14:7586:6116::/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