Autonomous system
AS36692 CISCO-UMBRELLA
Hosting ARIN
IPv4 addresses
165K
210 prefixes
IPv6 prefixes
83
counted as prefixes, not addresses
Countries
1
mostly US
Flagged prefixes
0
none
Summary
Cisco Umbrella (OpenDNS)
dns security content
Cisco Umbrella (CISCO-UMBRELLA) — the network behind the OpenDNS public
resolvers and Cisco's cloud DNS-security service.
What it's used for
- Serving the public DNS resolvers at
208.67.222.222/208.67.220.220and Umbrella's DNS-layer security filtering for enterprises.
Notable
- An anycast DNS network: the same resolver IPs answer from many locations, so an IP here is a DNS endpoint, not a content host.
- OpenDNS was an early popular alternative resolver (content filtering, typo correction) before Cisco acquired it and folded it into Umbrella.
Interesting
- Public resolvers like this are frequently seen in device and router configs, which is why the network turns up often in DNS-related lookups.
This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy. Source, and how to suggest an edit.
Address space
Summary
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 293 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS36692- Registry name
- CISCO-UMBRELLA
- Registrant
- Cisco OpenDNS, LLC
- Abuse contact
- rir-abuse@cisco.com
- Registered
- 2006-03-21
- Last changed
- 2026-01-14
- Status
- active
Reputation
Classification and threat
Hosting Datacenter or cloud provider. Addresses are servers, not people.
No IC3 indicators Nothing from the FBI IC3 feed.
Threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.
Elsewhere