asn.dev

Autonomous system

AS34 UDELNET

Unclassified ARIN

IPv4 addresses 65.79K 2 prefixes
IPv6 prefixes 1 counted as prefixes, not addresses
Countries 1 mostly US
Exchanges 0 recorded by PCH
Upstreams 4 1 downstream
Flagged prefixes 0 none

Summary

University of Delaware

United States · AI-generated

education research university legacy

An early low-numbered allocation (UDELNET) serving the University of Delaware in Newark, Delaware.

What it's used for

  • Campus, research, and administrative networking for the University of Delaware.

Notable

  • Institutional address space, not commercial hosting.
  • A two-digit AS number marks the university as an early-internet participant.

Interesting

  • The University of Delaware was an early home of network-time work; David Mills, the creator of NTP, was a professor there.

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

Full topology · Graph

Internet exchanges

No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.

Transit providers

4 upstream, 1 downstream and 8 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS33287Comcast Cable Communications, LLC82
AS174Cogent Communications, LLC51
AS3754NYSERNet15
AS33659Comcast Cable Communications, LLC11

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-18, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.

Address space

Summary

Shape and geography

IPv4 2 prefixes · 65.79K addresses IPv6 1 prefixes

CountryNamePrefixes
USUnited States of America3

Registry

Allocation record

ARIN · via Atlas (registry + RDAP)
Registry
ARIN
Handle
AS34
Registry name
UDELNET
Registrant
University of Delaware
Abuse contact
noc@udel.edu
Registered
1984-10-03
Last changed
2023-11-08
Allocation
assigned

Routing security

RPKI and IRR

Full detail
RPKI
67% valid · 2 valid, 1 with no ROA
ROAs
3 authorising AS34
ASPA
no ASPA record
IRR
100% registered · 3 of 3 announcements
Route objects
4 naming AS34

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 1,784 prefixes, as published 2026-10-19. 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

Cross-check