asn.dev

Autonomous system

AS1961 MARS-AMERICAS ISI

Unclassified RIPE

IPv4 addresses 2.05K 3 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly EU
Exchanges 0 recorded by PCH
Upstreams 1 0 downstream
Flagged prefixes 0 none

Summary

Mars, Incorporated

Global · AI-generated

enterprise legacy

MARS-AMERICAS ISI is the Americas segment of the global corporate network operated by Mars, Incorporated, the US-based multinational confectionery, pet care, and food company.

What it's used for

  • Internal corporate networking for a large private enterprise, not a commercial ISP or public host.

Notable

  • An enterprise-owned network. Sibling AS numbers carry the MARS-EUROPE and MARS-ASIA-PACIFIC names, reflecting a network split by world region under Mars's ISI IT entity.
  • Registered through RIPE; the resource holder is legally based in Europe, though Mars operates worldwide.

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 1 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS51964ORANGE BUSINESS SERVICES U.S. Inc.583

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-10, 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 · 2.05K addresses IPv6 0 prefixes

CountryNamePrefixes
EU3

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS1961
Registry name
MARS-AMERICAS
Registrant
ERX-AS1961-MNT
Registered
2002-08-21
Last changed
2017-11-15
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
83% valid · 10 valid, 0 with no ROA 2 RPKI-invalid
ROAs
10 authorising AS1961
ASPA
no ASPA record
IRR
50% registered · 6 of 12 announcements
Route objects
2 naming AS1961

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: 431 networks and 1,775 prefixes, as published 2026-10-11. 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