asn.dev

Autonomous system

AS202170 DSTELECOM-AS DSTELECOM, S.A.

Unclassified RIPE

IPv4 addresses 1.54K 3 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

DSTELECOM

Portugal · AI-generated

business telecom portugal

DSTELECOM-AS is operated by DSTELECOM, S.A., a telecommunications company based in Braga, Portugal.

What it's used for

  • The address space carries corporate and telecom infrastructure, evidenced by the netname PT-DSTELECOM-20140321 and registrants including Carlos Caldas, Sergio Fernandes, and Sergio Lopes.
  • The AS announces 1536 IPv4 addresses across 3 prefixes with 2 observed neighbours, a ratio consistent with a small business or access network rather than a transit provider.
  • Traffic from this AS consists of corporate office workers and internal telecom services for the DSTELECOM entity.

Notable

  • Registrants for the primary prefix 185.51.92.0/22 align with the announcer, while the prefixes 149.12.224.0/24 and 149.12.227.0/24 are registered to Cogent Communications, LLC under the netname COGENT-149-12-16.
  • The address inventory is small and fragmented, consisting of one /22 and two /24 blocks, with no IPv6 prefixes announced.

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
AS174Cogent Communications, LLC174
AS9186INFOCOMUNICACOES, S.A.174

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-11-04, 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 3 prefixes · 1.54K addresses IPv6 0 prefixes

CountryNamePrefixes
PTPortugal3

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS202170
Registry name
DSTELECOM-AS
Registrant
lir-pt-dstelecom-1-MNT
Abuse contact
ripe@dstelecom.pt
Registered
2014-03-20
Last changed
2023-06-06
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
67% valid · 4 valid, 2 with no ROA
ROAs
4 authorising AS202170
ASPA
no ASPA record
IRR
100% registered · 6 of 6 announcements
Route objects
6 naming AS202170

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: 452 networks and 1,853 prefixes, as published 2026-11-05. 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