AS16660 Capital One Financial Corporation

COF-EQX-SJN-PP - Capital One Financial Corporation · registered in the United States

IPv4 addresses2561 prefixes · <0.001% of announced IPv4

Rank in United States#14,126largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#63,782of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryUnited States18,679 ASNs registered there

Open AS16660 in ASN lookup Look up an IP in this network (204.63.43.1) All networks in United States

IPv4 prefixes

All 1 prefix, in address order.

204.63.43.0/24

Other ASNs named Capital One Financial Corporation

4 other networks use the same organisation name; together with AS16660 they announce 1,280 IPv4 addresses.

ASNNameIPv4 addresses

AS16419COF-EQX-CHI-PP - Capital One Financial Corporation US256

AS19769COF-KDC - Capital One Financial Corporation US256

AS395609COF-EQX-ASH-PP - Capital One Financial Corporation US256

AS395615COF-EQX-SEA-PP - Capital One Financial Corporation US256

Similar-sized networks in United States

ASNNameIPv4 addresses

AS16636#14123 CWF-ASN-BGP - The Colonial Williamsburg Foundation256

AS16650#14124 TORRID - Torrid LLC256

AS16655#14125 HARTWICK-01 - Hartwick College256

AS16665#14127 JIBEI-FLUSHING - Joint Industry Board of the Electrical Industry256

AS16671#14128 COLOBLOX - Coloblox Data Centers Inc256

AS16676#14129 BARCHARTCOM - Barchart.com, Inc.256

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