Autonomous system
AS50271 MESP
Unclassified RIPE
Summary
Mota-Engil
business construction corporate
MESP is operated by Mota-Engil Global-servicos Partilhados Administrativos E Tecnicos S.A.
What it's used for
- The address space carries corporate administrative and technical services, identified by the netname
MESP-MOTA-ENGIL-SERVICOS-PARTILHADOS-ADMINISTRATIVOSon both announced prefixes. - The AS announces 512 IPv4 addresses across 2 prefixes 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 and internal systems for Mota-Engil, a major Portuguese construction and infrastructure group.
Notable
- Registrants for both prefixes match the AS holder, confirming direct ownership of the address space.
- The inventory consists of two /24 blocks, representing a finely subdivided internal network for the company's shared administrative and technical services division.
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
Internet exchanges
No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-13, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 2 prefixes · 512 addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| PT | Portugal | 2 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS50271- Registry name
- MESP
- Registrant
- AS2860-MNT
- Abuse contact
- csirt@mota-engil.pt
- Registered
- 2009-12-14
- Last changed
- 2019-12-13
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 2 with no ROA
- ROAs
- 0 authorising AS50271
- ASPA
- no ASPA record
- IRR
- 100% registered · 2 of 2 announcements
- Route objects
- 2 naming AS50271
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