asn.dev

Autonomous system

AS52755 U&M MINERACAO E CONSTRUCAO SA

Unclassified AFRINIC

IPv4 addresses 2.05K 1 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly BR
Exchanges 0 recorded by PCH
Upstreams 1 0 downstream
Flagged prefixes 0 none

Summary

U&M Mineração e Construção S/A

Brazil · AI-generated

mining construction corporate brazil

AS52755 is held by U&M Mineração e Construção S/A.

What it's used for

  • The space carries a single IPv4 prefix, 177.38.168.0/21, with the netname 189918 and registrant U&M MINERACAO E CONSTRUCAO S/A.
  • The AS announces 2048 IPv4 addresses across 1 prefix and has 2 observed neighbours, indicating a small, self-contained corporate network rather than a transit or access provider.
  • Traffic from this AS consists of internal corporate communications for a mining and heavy construction company, including site operations and administrative backhaul.

Notable

  • The RDAP registrant U&M MINERACAO E CONSTRUCAO S/A matches the AS holder exactly.
  • U&M is the result of a merger between Unienge Comercial e Construtora Ltda and Módulo Terraplanage.
  • The address inventory is a single /21 block, typical of a corporate estate with no subdivision into multiple prefixes.

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
AS23106AMERICAN TOWER DO BRASIL-COMUNICACAO MULTIMIDIA LT186

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-14, 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 · 2.05K addresses IPv6 0 prefixes

CountryNamePrefixes
BRBrazil1

Registry

Allocation record

AFRINIC · via Atlas (registry + RDAP)
Registry
AFRINIC
Handle
52755
Registry name
ASN52755
Registrant
U&M MINERACAO E CONSTRUCAO S/A
Abuse contact
MARCELO RIBEIRO MACHADO
Registered
2012-08-31
Last changed
2013-03-06
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
0% valid · 0 valid, 3 with no ROA
ROAs
0 authorising AS52755
ASPA
no ASPA record
IRR
100% registered · 3 of 3 announcements
Route objects
3 naming AS52755

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 1,773 prefixes, as published 2026-10-13. 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