AS15228 — OREILLYMEDIA-AS1

AS15228 announces 1 IPv4 prefixes covering 512 addresses and 0 IPv6 prefixes.

About this network

An apostrophe in the registrant, and nothing else to go on.

What it's used for

• A publisher's network. A single IPv4 /23 announced from the United States, no IPv6, and one observed BGP neighbour.

Notable

• The registrant carries an apostrophe inside the company name, a character that breaks naive parsing and quoting in a field most tools treat as plain text.
• The netname drops the apostrophe entirely, reducing the name to two letters and a counter.
• The AS handle keeps the name but also drops the apostrophe, and appends the abbreviation for autonomous system number with a counter.
• Three addresses were queried for reverse DNS and none returned a name.
• The routing history begins in 2009, much later than most numbers in this range.

Interesting

• Three renderings of one company name in one record, differing in whether the apostrophe survives, is a small demonstration of why matching organisations across registry fields is unreliable. None of the three is wrong; no rule turns one into another.
• Five hundred addresses behind one upstream for a publisher means the public presence lives elsewhere, on hosting the company does not route itself. This block is the corporate network.
• A late first-seen date on a low AS number is the normal case in this range, and it separates when the number was issued from when it was put to use.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 199.27.144.0/23

Upstream networks

• AS46375 Sonic Telecom LLC

Adjacent networks

• AS46375 Sonic Telecom LLC