AS11875 — WILLIAM-HERRIN
AS11875 announces 1 IPv4 prefixes covering 512 addresses and 1 IPv6 prefixes.
About this network
WILLIAM-HERRIN is exactly what the handle says: an autonomous system held by a single person, registered to William Herrin as a sole proprietorship in Seattle, Washington. It is one of the internet's genuinely small ASes, run by a career network engineer for his own consultancy and personal infrastructure.
What it's used for
Self-hosting and consultancy infrastructure. RIS sees two IPv4 prefixes (199.33.224.0/23 plus a more-specific /24, 512 addresses in total) and one IPv6 /44, with two observed neighbours. Two neighbours is the signature of an end site that multi-homes for resilience rather than a network that sells transit. The sampled reverse DNS resolves under dirtside.com, the domain of Herrin's Seattle consultancy Dirtside Systems, so the space carries his own hosts rather than customers'.
Notable
- The prefixes are registered in ARIN to Why InterNetworking, not to the AS holder's name. That mismatch looks like the classic leased-space tell until you check: Why? InterNetworking was Herrin's own 1990s web-services business. Same operator, different era, and the rDNS under his current company confirms it. This is history, not brokerage.
- ARIN dates the AS number to 2008, another reminder that a low five-digit number in this range says nothing about a network's age.
Interesting
Herrin is a long-standing voice in the operator community, active on NANOG and in routing-research circles, which is very much the profile of someone who keeps a personal ASN and IPv6 allocation running for its own sake.
This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.
Announced prefixes
- 199.33.224.0/23
- 2602:815:6000::/44
Upstream networks
Adjacent networks
Routing security
- RPKI: 1 valid, 0 invalid and 2 not-found announcements; 1 ROAs.
- ASPA: none published.
- IRR: 67% of announcements registered; 2 route objects.
- Listed in as-sets: AS-40676, AS-FRC-FMT, AS-FRC-VAN, AS-HURRICANE, AS-HURRICANEV6, AS-TRANSROUTE-SPEC, AS20473:AS-VULTR, AS3491:AS-CUSTOMERS-NA.
awaiting query
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