UNIVERSITY OF DELAWARE — IP ranges & network footprint

IP Ranges (8)

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CIDR	Org name	Registry	Status	Confidence
38.115.62.0/24	University of Delaware	BGP	ANNOUNCED	● high
128.4.0.0/16	University of Delaware	ARIN	DIRECT ALLOCATION	● high
128.175.0.0/16	University of Delaware	BGP	ANNOUNCED	● high
2604:580::/32	University of Delaware	BGP	ANNOUNCED	● high
91.143.144.0/20	University of Delaware	BGP	ANNOUNCED	● low
103.39.120.0/23	University of Delaware	BGP	ANNOUNCED	● low
171.79.128.0/20	University of Delaware	BGP	ANNOUNCED	● low
171.79.144.0/20	University of Delaware	BGP	ANNOUNCED	● low

IPv6 ranges (1)

CIDR
2604:580::/32

Footprint over time

7 weekly snapshots · JSON

10 -1 netblocks since 2026-07-26

2026-07-26 peak 11 2026-09-13

Domains this organisation publishes

what's this?

udel.edu

Other domains hosted in this network

what's this?

udel.edu proconsortium.org

Possibly related to this organisation

what's this?

Same name family

Separately-registered clusters whose names share “University of” — often per-country or per-system registrations of the same brand, occasionally a different organisation sharing the name. Not counted in this organisation's own footprint.

University of Puerto Rico 200 blocks
University of Western Sydney 145 blocks
University of Southern California 96 blocks
UNIVERSITY OF ULSAN 78 blocks
University of Central Florida 63 blocks
University of Missouri - dba the Missouri Research and Education Network (MOREnet) 60 blocks
UNIVERSITY OF INCHEON 59 blocks
University of Texas System 56 blocks

Combined view of all 491 name-family clusters →

Sub-allocations under carriers

IP blocks an ISP reassigned to a similarly-named customer — decoded from the ISP's own naming convention, not a direct registration.

Quanzhou-Huaqiao-University-Corp via CNCGROUP IP network of ShangHai IDC sub-allocation
DEFENCE-UNIVERSITY via Ethiopian Educational Research Network (EthERNet) sub-allocation
SUZHOU-UNIVERSITY-FIRST-HOSPITAL via No.31,Jin-rong Street sub-allocation
KAIFENG-HENAN-UNIVERSITY via No.31,Jin-rong Street sub-allocation
Universityofeastlondon Docklands via Virtual1 Limited sub-allocation
Nan Jing Agriculture University library via CNCGROUP IP network of ShangHai IDC sub-allocation
Prince-Sultan-University via Etihad Etisalat, a joint stock company sub-allocation
Binxin University via No.31,Jin-rong Street sub-allocation

Network trust

what's this?

RPKI hygiene: C how networks compare →

60.0% of checked blocks have valid RPKI ROA coverage (6 of 10)

Possible discrepancies (1)

These blocks are registered to University of Delaware but cryptographically authorized for a different, unrelated network (1 distinct holder) — often M&A history, multi-homing, or outsourced/managed hosting, occasionally worth a closer look.

103.39.120.0/23 /23

authorized for AS152709 — RK Link

NIC Handles

AS2 AS3 AS34 DAVIS2708-ARIN DAVIS2708-ARIN HUFFM207-ARIN HUFFM207-ARIN HUFFM207-ARIN HUFFM207-ARIN HUFFM207-ARIN MAINT-RKLINK-BD NSS13-ARIN +6 more

Netblocks	8 · 144,128 IPv4 addresses
IPv6	1 prefix (largest 2604:580::/32)
Registered in	United States (5) · India (2) · BD (1) · Russia (1)
Also registered under this name	3,717 netblocks across 491 separate records
Record ID	241848640
Registry	BGP
Owner jurisdiction	US-DE
Customers	see who runs inside this network →

Attribution	GLEIF legal-entity match
Legal identity	LEI KPIOJCFMR70NWLS6O145
Shared handles	clustered on 18 shared RIR contact/maintainer handles
Registry names	2 distinct registrant names across these blocks
full provenance (JSON) → · how attribution works · report an issue