Autonomous system
AS15307 CHILDRENS-SEATTLE - Childrens Hospital and Regional Medical Center
Unclassified ARIN
Summary
Children's Hospital and Regional Medical Center
enterprise education research infrastructure
Half the allocation goes as one route; the other half is broken into twenty-one.
What it's used for
- A paediatric hospital and research centre's network. Twenty-two IPv4 prefixes announced from the United States, no IPv6, and three observed BGP neighbours.
Notable
- All twenty-two announcements fall inside one contiguous allocation, and together they cover all sixty-five thousand of its addresses.
- The lower half is carried as a single route. The upper half is split into twenty-one routes ranging from a
/19down to individual/24blocks. - Every block carries the same netname, three letters for the city and one word for the hospital, so the registry gives no clue why the split exists.
- The registrant appends a network engineer role after a semicolon.
- Eighteen addresses were queried for reverse DNS and none returned a name.
Interesting
- Twenty-one routes where one would do is traffic engineering, not carelessness: with three upstreams, each piece can be steered separately, and a hospital that cannot lose connectivity will trade routing table space for control.
- The cost is carried by everyone else. Each of those routes takes an entry in every full routing table on the internet, for one organisation's internal preferences.
- Publishing nothing in reverse across the whole range is consistent for a network carrying clinical systems and research data. The routes reveal the structure; the names reveal nothing.
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 2026-11-04, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 22 prefixes · 65.54K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 22 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS15307- Registry name
- CHILDRENS-SEATTLE
- Registrant
- Childrens Hospital and Regional Medical Center
- Abuse contact
- colin.keeney@seattlechildrens.org
- Registered
- 2000-04-14
- Last changed
- 2012-03-02
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 12 with no ROA
- ROAs
- 0 authorising AS15307
- ASPA
- no ASPA record
- IRR
- 8% registered · 1 of 12 announcements 1 other origin
- Route objects
- 1 naming AS15307
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: 453 networks and 1,853 prefixes, as published 2026-11-05. 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