AS2721 CULR, LLC

SCLR - CULR, LLC · registered in the United States

IPv4 addresses8,7047 prefixes · <0.001% of announced IPv4

Rank in United States#3,138largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#9,855of 79,396 networks with IPv4

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

CountryUnited States18,679 ASNs registered there

Open AS2721 in ASN lookup Look up an IP in this network (205.186.46.1) All networks in United States

IPv4 prefixes

All 7 prefixes, in address order.

205.186.46.0/23
205.186.224.0/23
205.186.226.0/24
205.186.227.0/24
205.186.228.0/22
205.186.232.0/21
205.186.240.0/20

IPv6 prefixes

All 1 prefix.

2606:c000::/32

Other ASNs named CULR, LLC

1 other network uses the same organisation name; together with AS2721 they announce 16,384 IPv4 addresses.

ASNNameIPv4 addresses

AS2722C-LIGHT - CULR, LLC US7,680

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ASNNameIPv4 addresses

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AS22346#3140 NRZ-NETWORK - Newroads Telecom8,704

AS23188#3141 WIN - Wabash Independent Networks8,704

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