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AS3557
AS3557 Internet Systems Consortium, Inc.
ISC-AS - Internet Systems Consortium, Inc. · registered in the United States
IPv4 addresses 512 1 prefixes · <0.001% of announced IPv4
Rank in United States #10,338 largest network in US by IPv4 space, of 18,338 · <0.01% of US
Rank worldwide #47,994 of 79,396 networks with IPv4
IPv6 2 x /48 1 prefixes
IPv4 prefixes
All 1 prefix, in address order.
IPv6 prefixes
All 1 prefix.
Other ASNs named Internet Systems Consortium, Inc.
6 other networks use the same organisation name; together with AS3557 they announce 37,120 IPv4 addresses.
ASN Name IPv4 addresses
AS1280 ISC-AS-1280 - Internet Systems Consortium, Inc. US 23,296 AS30133 ISC-F-AS - Internet Systems Consortium, Inc. US 9,984 AS27321 ISC-F-AS - Internet Systems Consortium, Inc. US 2,048 AS30132 ISC-F-AS - Internet Systems Consortium, Inc. US 768 AS33071 ISC-F-AS - Internet Systems Consortium, Inc. US 256 AS23713 ISC-SEL1 - Internet Systems Consortium, Inc. KR 256
Similar-sized networks in United States
ASN Name IPv4 addresses
AS402456 #10335 BJERKERUD - Bjerkerud,512 AS112 #10336 AS112-PROJECT - DNS-OARC512 AS968 #10337 PACKETFRAME - Packetframe512 AS6979 #10339 SAP-SE-PHL - SAP America Inc.512 AS7034 #10340 PHIREPHLY-DESIGN - PhirePhly Design512 AS7215 #10341 AHNET-AS - Ntirety, Inc.512
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