Autonomous system
AS46543 UMB
Unclassified ARIN
Summary
University of Maryland, Baltimore
education business us
The AS handle UMB is held by University of Maryland, Baltimore.
What it's used for
- The address space is registered under the netname
UMAB-NETfor the University of Maryland, Baltimore. - The AS announces a single IPv4 prefix, 134.192.0.0/16, comprising 65536 addresses, with 2 observed neighbours.
- Traffic from this network consists of institutional data for a public university, supporting academic research, administrative operations, and student services.
Notable
- The RDAP registrant for the announced prefix matches the AS holder, identified as University of Maryland, Baltimore.
- The inventory consists of a single contiguous /16 block, indicating a standard institutional allocation without fragmented or leased subnets.
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 2026-10-16, 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 · 65.54K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 1 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS46543- Registry name
- UMB
- Registrant
- University of Maryland, Baltimore
- Abuse contact
- abuse@umaryland.edu
- Registered
- 2008-10-10
- Last changed
- 2023-10-31
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 1 with no ROA
- ROAs
- 0 authorising AS46543
- ASPA
- no ASPA record
- IRR
- 100% registered · 1 of 1 announcements
- Route objects
- 1 naming AS46543
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 1,783 prefixes, as published 2026-10-17. 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