AS25605 Cisco OpenDNS, LLC

SCANSAFE - Cisco OpenDNS, LLC · registered in the United States

IPv4 addresses5122 prefixes · <0.001% of announced IPv4

Rank in United States#11,098largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#50,511of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryUnited States18,679 ASNs registered there

Open AS25605 in ASN lookup Look up an IP in this network (155.190.249.1) All networks in United States

IPv4 prefixes

All 2 prefixes, in address order.

155.190.249.0/24
198.41.11.0/24

Other ASNs named Cisco OpenDNS, LLC

1 other network uses the same organisation name; together with AS25605 they announce 170,240 IPv4 addresses.

ASNNameIPv4 addresses

AS36692CISCO-UMBRELLA - Cisco OpenDNS, LLC US169,728

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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