AS400555 Isogram, LLC

ISOGRAM - Isogram, LLC · registered in the United States

IPv4 addresses5122 prefixes · <0.001% of announced IPv4

Rank in United States#10,091largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#47,354of 79,396 networks with IPv4

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

CountryUnited States18,679 ASNs registered there

Open AS400555 in ASN lookup Look up an IP in this network (23.135.200.1) All networks in United States

IPv4 prefixes

All 2 prefixes, in address order.

23.135.200.0/24
206.168.204.0/24

IPv6 prefixes

All 1 prefix.

2606:c2c0::/32

Similar-sized networks in United States

ASNNameIPv4 addresses

AS399417#10088 VORTEXOKMAIN - VortexOK.net LLC512

AS400115#10089 TREEHOUSE - Treehouse Broadband, LLC512

AS400211#10090 PORT80 - Port 80512

AS400656#10092 METRO-SERVICE - Metro Service Center512

AS400926#10093 KIWI-TELECOM-01 - KIWI TELECOM512

AS400996#10094 UNIVERSAL-BROADBAND - AeroSurf512

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