Autonomous system
AS22666 GBHSD
Unclassified ARIN
Summary
Glenbrook High School District
education k12 district us
GBHSD is the autonomous system for Glenbrook High School District.
What it's used for
- The space carries the district's internal network, identified by the netname
GLENBROOK-NETWORKand registrantGlenbrook High School District. - The AS announces a single IPv4 prefix of 512 addresses (198.17.110.0/23) with one observed neighbour, indicating a small, self-contained educational network rather than a transit or large-scale access provider.
Notable
- The RDAP registrant
Glenbrook High School Districtmatches the AS handle and registry holder, confirming consistent ownership. - The address inventory consists of a single /23 block, which is a standard allocation size for a small institutional network.
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.
Transit providers
1 upstream, 0 downstream and 1 adjacent networks observed; most-used upstreams first.
| AS | Network | Paths seen |
|---|---|---|
| AS6325 | Illinois Century Network | 57 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-15, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 1 prefixes · 512 addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 1 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS22666- Registry name
- GBHSD
- Registrant
- Glenbrook High School District
- Abuse contact
- tbaig@glenbrook225.org
- Registered
- 2013-10-08
- Last changed
- 2013-10-08
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 1 with no ROA
- ROAs
- 0 authorising AS22666
- ASPA
- no ASPA record
- IRR
- 100% registered · 1 of 1 announcements
- Route objects
- 1 naming AS22666
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: 442 networks and 1,781 prefixes, as published 2026-10-16. 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