University of Maryland Baltimore County

University of Maryland Baltimore County (UMBC)
Data as of 2026-10-18
BGP inherited
This organisation
Netblocks4 · 82,176 IPv4 addresses
IPv6 1 prefix (largest 2620:0:5300::/44)
Also registered under this name 42 netblocks across 4 separate records
Record ID250156583
RegistryBGP
Customerssee who runs inside this network →
Evidence & provenance ?
Attribution BGP parent (inherited)
Shared handles clustered on 12 shared RIR contact/maintainer handles
Registry names 2 distinct registrant names across these blocks
full provenance (JSON) → · how attribution works · report an issue

IP Ranges (4)

⬇ export CSV
CIDR Org name Registry Status Confidence
130.85.0.0/16 University of Maryland Baltimore County (UMBC) BGP ANNOUNCED ● high
136.160.0.0/18 University of Maryland Baltimore County (UMBC) BGP ANNOUNCED ● high
199.201.245.0/24 University of Maryland Baltimore County (UMBC) ARIN DIRECT ALLOCATION ● high
2620:0:5300::/44 University of Maryland Baltimore County (UMBC) BGP ANNOUNCED ● high

IPv6 ranges (1)

CIDR
2620:0:5300::/44

Footprint over time

7 weekly snapshots · JSON
6 0 netblocks since 2026-09-06
2026-09-06 peak 6 2026-10-18

Other domains hosted in this network

what's this?
umbc.edu

Network trust

what's this?
RPKI hygiene: B how networks compare →
83.3% of checked blocks have valid RPKI ROA coverage (5 of 6)
Possible discrepancies (3)

These blocks are registered to University of Maryland Baltimore County (UMBC) 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.

2620:0:5300::/44 /44 authorized for AS6859 — DIGITAL CONTINUITY LIMITED
130.85.0.0/16 /16 authorized for AS6859 — DIGITAL CONTINUITY LIMITED
130.85.0.0/16 /16 authorized for AS6859 — DIGITAL CONTINUITY LIMITED

NIC Handles

AS11131 DOYLE181-ARIN DOYLE181-ARIN JJS41-ARIN PETRY11-ARIN PETRY11-ARIN SOELL-ARIN SOELL-ARIN UMBCU-Z WHOIS10-ARIN WHOIS10-ARIN WHOIS10-ARIN