Autonomous system
AS7767 EB - Encyclopaedia Britannica
Unclassified ARIN
Summary
Encyclopaedia Britannica
enterprise legacy
Autonomous System 7767 (EB) belongs to Encyclopaedia Britannica, the Chicago-based reference publisher — today primarily a digital education and reference business rather than a printer of books.
What it's used for
- Carrying Britannica's own online estate: the
britannica.comreference site, its education products, and the corporate systems behind them. - Announcing two
/24s and a/48of IPv6 — a few hundred IPv4 addresses in total.
Notable
- Both IPv4 prefixes are provider-assigned space, carved out of AboveNet / Zayo ranges (
208.184.0.0/15and64.124.0.0/16) rather than being Britannica's own legacy allocations. Britannica holds the ASN and announces the prefixes, but the underlying addresses are registered to the carrier. - This is enterprise space: a publisher running its own website and back office. It is not hosting, not an access network, and there are no third-party tenants in the range.
Interesting
- Britannica stopped printing its flagship set in 2012 after 244 years, pivoting entirely to digital. The ASN is a small artefact of that transition: a centuries-old publisher that needed to become, and stay, a website — and chose to hold its own AS number and multihome rather than sit behind a single provider.
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
No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-11-07, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 2 prefixes · 512 addresses IPv6 1 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 3 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS7767- Registry name
- EB
- Registrant
- Encyclopaedia Britannica
- Abuse contact
- arin@eb.com
- Registered
- 1997-01-07
- Last changed
- 2011-06-23
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 67% valid · 2 valid, 1 with no ROA
- ROAs
- 2 authorising AS7767
- ASPA
- no ASPA record
- IRR
- 33% registered · 1 of 3 announcements
- Route objects
- 2 naming AS7767
Reputation
Classification and threat
Unclassified Not in the curated lists. Most of the ~80,000 allocated ASNs are not.
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: 454 networks and 1,852 prefixes, as published 2026-11-08. 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