asn.dev

Autonomous system

AS48640 MAZ-AS

Unclassified RIPE

IPv4 addresses 2.05K 1 prefixes
IPv6 prefixes 1 counted as prefixes, not addresses
Countries 1 mostly ES
Exchanges 0 recorded by PCH
Upstreams 2 0 downstream
Flagged prefixes 0 none

Summary

MAZ Mutua Colaboradora con la Seguridad Social N. 11

Spain · AI-generated

business healthcare corporate spain

MAZ-AS is held by MAZ Mutua Colaboradora con la Seguridad Social N. 11.

What it's used for

  • The address space carries corporate infrastructure, evidenced by the reverse DNS record 254.205.143.94.maz.es and the netname ES-MAZ-20081219.
  • The AS announces 2048 IPv4 addresses and 1 IPv6 prefix, with only 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 a Spanish occupational health provider that manages the health of 670,000 workers from 90,000 companies.

Notable

  • The registrant MAZ Mutua Colaboradora con la Seguridad Social N. 11 matches the AS holder exactly.
  • The address inventory consists of a single IPv4 block 94.143.200.0/21 and one IPv6 prefix 2a03:3900::/32, representing a compact and self-contained corporate network.

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 4 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS64411Correos Telecom SA S.M.E.109
AS12479Orange Espagne SA103

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 1 prefixes

CountryNamePrefixes
ESSpain2

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS48640
Registry name
MAZ-AS
Registrant
MAZ-MNT
Abuse contact
abuse@maz.es
Registered
2008-12-19
Last changed
2019-06-21
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
0% valid · 0 valid, 4 with no ROA
ROAs
0 authorising AS48640
ASPA
no ASPA record
IRR
100% registered · 4 of 4 announcements
Route objects
10 naming AS48640

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 1,772 prefixes, as published 2026-10-15. 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