Autonomous system
AS33255 HAMDEN-ASN - Hampden-Sydney College
Unclassified ARIN
Summary
Hampden-Sydney College
education college residential business
HAMDEN-ASN is operated by Hampden-Sydney College.
What it's used for
- The address space carries campus network traffic, with reverse DNS records indicating administrative (
zzz-adm-dhcp), student (zzz-stu-dhcp), and DMZ (zzz-dmz-host) segments under thehsc.edudomain. - The AS announces 6,656 IPv4 addresses across 3 prefixes and maintains 2 observed neighbours, a ratio consistent with a small, self-contained institutional network rather than a transit provider.
Notable
- All three announced prefixes share the netname
HSC-MAIN-CIDR-01and list Hampden-Sydney College as the registrant, confirming the space is directly owned and managed by the institution. - The inventory consists of three contiguous IPv4 blocks within the 72.10.224.0/20 range, with no IPv6 prefixes announced.
- The reverse DNS sample shows a structured naming convention for DHCP pools and DMZ hosts, reflecting a segmented internal network design typical of a college campus.
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 2026-11-10, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 3 prefixes · 6.66K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 3 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS33255- Registry name
- HAMDEN-ASN
- Registrant
- Hampden-Sydney College
- Abuse contact
- tpugh@hsc.edu
- Registered
- 2004-11-03
- Last changed
- 2021-11-16
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 3 with no ROA
- ROAs
- 0 authorising AS33255
- ASPA
- no ASPA record
- IRR
- 100% registered · 3 of 3 announcements
- Route objects
- 1 naming AS33255
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: 454 networks and 1,847 prefixes, as published 2026-11-11. 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