asn.dev

Autonomous system

AS211680 AS-BITSIGHT

Unclassified RIPE

IPv4 addresses 1.02K 3 prefixes
IPv6 prefixes 3 counted as prefixes, not addresses
Countries 1 mostly PT
Exchanges 0 recorded by PCH
Upstreams 1 0 downstream
Flagged prefixes 0 none

Summary

NSEC - Sistemas Informaticos, S.A.

Portugal · AI-generated

business portugal leased

The AS handle AS-BITSIGHT is held by NSEC - Sistemas Informaticos, S.A.

What it's used for

  • The address space carries mixed infrastructure, with the primary block 45.156.128.0/23 registered under netname PT-NSEC-BITSIGHT-20190920 and registrant Data Operations; NSEC - Sistemas Informaticos, S.A.
  • The remaining prefixes 185.180.143.0/24 and 185.226.198.0/24 carry netnames ICG-1-INAP-ORD and ICG-INAP-1-SCLARA respectively, indicating leased or allocated space from other providers.
  • With 1024 IPv4 addresses announced against a single observed neighbour, the network functions as a small-scale business or internal corporate estate rather than a transit or access provider.
  • Reverse DNS entries for the primary block point to internet-census.org hosts, suggesting the space is used for data collection or monitoring infrastructure.

Notable

  • Registrants for the secondary prefixes differ from the announcer, listing only Abuse-C Role, which is consistent with leased address space from third-party providers.
  • The inventory consists of three IPv4 prefixes and three IPv6 prefixes, all announced from Portugal.
  • The AS was first seen in routing tables in 2021.

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 2 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS32475Internap Holding LLC334

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-27, 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 · 1.02K addresses IPv6 3 prefixes

CountryNamePrefixes
PTPortugal6

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS211680
Registry name
AS-BITSIGHT
Registrant
MNT-BST
Abuse contact
optout@internet-census.org
Registered
2021-03-05
Last changed
2021-03-05
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
100% valid · 7 valid, 0 with no ROA
ROAs
11 authorising AS211680
ASPA
no ASPA record
IRR
100% registered · 7 of 7 announcements
Route objects
12 naming AS211680

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: 446 networks and 1,852 prefixes, as published 2026-10-27. 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