AS7767 EB

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.com reference site, its education products, and the corporate systems behind them.
• Announcing two /24s and a /48 of IPv6 — a few hundred IPv4 addresses in total.

Notable

• Both IPv4 prefixes are provider-assigned space, carved out of AboveNet / Zayo ranges (208.184.0.0/15 and 64.124.0.0/16) 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.