asn.dev

Autonomous system

AS31011 UCTM-AS Sofia, Bulgaria

Unclassified RIPE

IPv4 addresses 1.02K 1 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly BG
Exchanges 0 recorded by PCH
Upstreams 1 0 downstream
Flagged prefixes 0 none

Summary

University of Chemical Technology and Metallurgy

Bulgaria · AI-generated

education university bulgaria

UCTM-AS is operated by the University of Chemical Technology and Metallurgy.

What it's used for

  • The address space carries the university's internal network, identified by the netname UCTM and registrant University of Chemical Technology And Metallurgy.
  • The AS announces 1024 IPv4 addresses across 1 prefix with 1 observed neighbour, a ratio consistent with a single-site institutional network rather than a transit or access provider.

Notable

  • The RDAP registrant matches the AS holder exactly, confirming the space is owned and operated by the university itself.
  • The inventory consists of a single contiguous /22 block (193.30.228.0/22), representing a compact, self-contained address estate typical of a large academic institution.

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

1 upstream, 0 downstream and 1 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS6802Bulgarian Research and Education Network Association (BREN)64

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-15, 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 1 prefixes · 1.02K addresses IPv6 0 prefixes

CountryNamePrefixes
BGBulgaria1

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS31011
Registry name
UCTM-AS
Registrant
University of Chemical Technology And Metallurgy
Abuse contact
jordanov@uctm.edu
Registered
2004-02-04
Last changed
2026-07-01
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
0% valid · 0 valid, 1 with no ROA
ROAs
0 authorising AS31011
ASPA
no ASPA record
IRR
100% registered · 1 of 1 announcements
Route objects
1 naming AS31011

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 1,781 prefixes, as published 2026-10-16. 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