AS12142 SULLCROM

SULLIVAN-CROMWELL - SULLCROM · registered in the United States

IPv4 addresses1,0244 prefixes · <0.001% of announced IPv4

Rank in United States#8,118largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#36,376of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryUnited States18,679 ASNs registered there

Open AS12142 in ASN lookup Look up an IP in this network (205.134.0.1) All networks in United States

IPv4 prefixes

All 4 prefixes, in address order.

205.134.0.0/24
205.134.7.0/24
205.134.10.0/24
205.134.12.0/24

Other ASNs named SULLCROM

8 other networks use the same organisation name; together with AS12142 they announce 4,096 IPv4 addresses.

ASNNameIPv4 addresses

AS32053SULLCROM - SULLCROM US768

AS32050SULLCROM - SULLCROM US512

AS32052SULLCROM - SULLCROM US512

AS32046SULLCROM - SULLCROM US256

AS32047SULLCROM - SULLCROM US256

AS32048SULLCROM - SULLCROM US256

AS32049SULLCROM - SULLCROM US256

AS32051SULLCROM - SULLCROM US256

Similar-sized networks in United States

ASNNameIPv4 addresses

AS12092#8115 SONIFI - Sonifi Solutions, Inc.1,024

AS12102#8116 CITY-OF-PORTLAND-OR-USA - City of Portland1,024

AS12134#8117 MTB - Manufacturers and Traders Trust Company1,024

AS12204#8119 SCN-NET - SCN Research, Inc.1,024

AS12236#8120 HANOVER - Hanover Insurance Group, Inc.1,024

AS12272#8121 MEDATA-PROD-AS - Medata Inc.1,024

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