Autonomous system
AS36692 CISCO-UMBRELLA
Hosting RIPE
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.
Interconnection
Peering at a glance
Internet exchanges
Recorded at 46 exchanges in 21 countries, largest first.
| Exchange | Location | Their address |
|---|---|---|
| IX.br (PTT.br) São Paulo | São Paulo, Brazil | 187.16.216.28 |
| DE-CIX Frankfurt | Frankfurt, Germany | 80.81.194.218 |
| LINX LON1 | London, United Kingdom | 195.66.225.70 |
| AMS-IX Amsterdam | Amsterdam, Netherlands | 80.249.208.88 |
| NAPAfrica IX Johannesburg | Johannesburg, South Africa | 196.60.9.55 |
| France-IX Paris | Paris, France | 37.49.236.210 |
| Equinix Internet Exchange Singapore | Singapore, Singapore | 27.111.228.90 |
| Milan Internet Exchange | Milan, Italy | 217.29.67.41 |
Transit providers
75 upstream, 2 downstream and 119 adjacent networks observed; most-used upstreams first.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-10, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 205 prefixes · 166K addresses IPv6 82 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 287 |
Registry
Allocation record
- Registry
- RIPE
- 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
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 99% valid · 821 valid, 10 with no ROA
- ROAs
- 1,111 authorising AS36692
- ASPA
- no ASPA record
- IRR
- 98% registered · 815 of 831 announcements 4 other origin
- Route objects
- 1,167 naming AS36692
Reputation
Classification and threat
Hosting Datacenter or cloud provider. Addresses are servers, not people.
Spamhaus DROP
Not on ASN-DROP The network as a whole is not listed.
No DROP prefixes None of its announced space is on the DROP prefix list.
Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 431 networks and 1,775 prefixes, as published 2026-10-11. A short, high-confidence list, so a match is worth taking seriously, and absence from it says little on its own.
FBI IC3
No IC3 indicators Nothing from the FBI IC3 feed.
IC3 threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.
Elsewhere