asn.dev

Autonomous system

AS55128 MCFASSOC

Unclassified ARIN

IPv4 addresses 512 2 prefixes
IPv6 prefixes 4 counted as prefixes, not addresses
Countries 1 mostly US
Exchanges 1 recorded by PCH
Upstreams 1 0 downstream
Flagged prefixes 0 none

Summary

McFarlane Associates LLC

United States of America · AI-generated

business consulting us

MCFASSOC is the autonomous system for McFarlane Associates LLC.

What it's used for

  • The address space carries corporate infrastructure, evidenced by reverse DNS entries such as 64.orange.mcfarlane-associates.com and netnames MCFASSOC-4 and NNENET-4.
  • The AS announces 512 IPv4 addresses across 2 prefixes and 4 IPv6 prefixes, with only 1 observed neighbour, indicating a small, self-contained business network rather than a transit or access provider.
  • Traffic from this AS consists of office workers and web/API endpoints for a management consulting firm based in Yorktown Heights, New York.

Notable

  • Registrants for both announced prefixes are listed as McFarlane Associates LLC, matching the AS holder.
  • The address inventory is compact, consisting of two /24 IPv4 blocks and four IPv6 prefixes, consistent with a single-site corporate estate.

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

Recorded at 1 exchange in 1 country, largest first.

ExchangeLocationTheir address
Northern New England Neutral Internet ExchangePortland, ME, United States206.71.140.110

Transit providers

1 upstream, 0 downstream and 2 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS13977Fidium184

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

Shape and geography

IPv4 2 prefixes · 512 addresses IPv6 4 prefixes

CountryNamePrefixes
USUnited States of America6

Registry

Allocation record

ARIN · via Atlas (registry + RDAP)
Registry
ARIN
Handle
AS55128
Registry name
MCFASSOC
Registrant
McFarlane Associates LLC
Abuse contact
dsmcf@sc3d.org
Registered
2017-01-18
Last changed
2017-01-18
Allocation
assigned

Routing security

RPKI and IRR

Full detail
RPKI
0% valid · 0 valid, 4 with no ROA
ROAs
0 authorising AS55128
ASPA
no ASPA record
IRR
100% registered · 4 of 4 announcements
Route objects
4 naming AS55128

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: 436 networks and 1,771 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

Cross-check