asn.dev

Autonomous system

AS43064 TEIXEIRAEDUARTE-AS Teixeira Duarte - Engenharia e Construcoes, S.A.

Unclassified RIPE

IPv4 addresses 256 1 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly PT
Exchanges 0 recorded by PCH
Upstreams 2 0 downstream
Flagged prefixes 0 none

Summary

Teixeira Duarte

Portugal · AI-generated

construction corporate portugal

TEIXEIRAEDUARTE-AS is held by Teixeira Duarte - Engenharia e Construcoes, S.A.

What it's used for

  • The space carries corporate infrastructure for a major Portuguese construction firm, identified by the netname PTUNET-TD and registrant Teixeira Duarte - Engenharia e Construcoes, S.A.
  • The AS announces 256 IPv4 addresses across 1 prefix (192.104.37.0/24) with 2 observed neighbours, indicating a small internal corporate estate rather than a transit or access network.
  • Traffic from this AS consists of office workers, engineering staff, and internal systems for a global construction company operating in multiple sectors.

Notable

  • The registrant Teixeira Duarte - Engenharia e Construcoes, S.A. matches the AS holder, confirming direct ownership of the address space.
  • The address inventory is a single /24 block, typical for a corporate site or headquarters network.
  • The company is the main entity of the Teixeira Duarte Group, a construction sector leader with history dating back to 1921.

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

2 upstream, 0 downstream and 2 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS15525SERVICOS DE COMUNICACOES E MULTIMEDIA S.A.45
AS12353Communicacoes Pessoais S.A.19

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-11-05, 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 · 256 addresses IPv6 0 prefixes

CountryNamePrefixes
PTPortugal1

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS43064
Registry name
TEIXEIRAEDUARTE-AS
Registrant
admnet-td-mnt
Abuse contact
admnet@teixeiraduarte.com
Registered
2007-06-01
Last changed
2024-12-11
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
0% valid · 0 valid, 1 with no ROA
ROAs
0 authorising AS43064
ASPA
no ASPA record
IRR
100% registered · 1 of 1 announcements
Route objects
1 naming AS43064

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: 453 networks and 1,854 prefixes, as published 2026-11-06. 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