Autonomous system
AS13423 GALVESTONISD - GALVESTON ISD
Unclassified ARIN
Summary
Galveston ISD
education government business
A single school district holding its own address space rather than sitting behind a regional agency.
What it's used for
- A Texas school district's network. 256 addresses in one IPv4 prefix,
198.246.160.0/24, two observed BGP neighbours, and no IPv6 announced.
Notable
- The AS handle is the district's name and the netname is its initials,
GISD. - Two observed neighbours for one /24.
- Three addresses were queried for reverse DNS and none returned a name.
Interesting
- Most districts of this size are customers of a regional education service agency, which holds the addresses and does the routing on their behalf. This one holds its own and announces it directly, which means somebody there decided that keeping the addresses through a change of provider was worth the paperwork.
- Two upstreams is the tell. A district that only wanted portable addresses would have one; two means the network is expected to stay up when a provider fails, which for a school system is about state testing and attendance reporting more than about browsing.
- Nothing in the block has a reverse name, so the public-facing side of the district lives elsewhere. These 256 addresses are the plumbing.
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 1 prefixes · 256 addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 1 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS13423- Registry name
- GALVESTONISD
- Registrant
- GALVESTON ISD
- Abuse contact
- administrator@gisd.org
- Registered
- 2013-05-20
- Last changed
- 2013-05-20
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 1 with no ROA
- ROAs
- 0 authorising AS13423
- ASPA
- no ASPA record
- IRR
- 100% registered · 1 of 1 announcements
- Route objects
- 1 naming AS13423
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