asn.dev

Autonomous system

AS40841 MARKETAXESS-INC-AS

Unclassified APNIC

IPv4 addresses 3.33K 8 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly US
Exchanges 0 recorded by PCH
Upstreams 6 1 downstream
Flagged prefixes 0 none

Summary

MarketAxess Holdings

United States of America · AI-generated

business fintech trading

The AS handle MARKETAXESS-INC-AS is held by MarketAxess Holdings, Inc.

What it's used for

  • The address space carries corporate infrastructure for an electronic trading platform, evidenced by netnames such as MARKETAXESS-INC-NETBLK-1, UK-ISMA-961111, and MARKE-84.
  • The AS announces 3328 IPv4 addresses across 8 prefixes and maintains 7 observed neighbours, a ratio consistent with a business network rather than a transit or access provider.
  • Traffic from this AS consists of institutional fixed-income trading, market data, and post-trade services for broker-dealers and institutional investors.

Notable

  • Registrants align with the announcer, including MARKETAXESS HOLDINGS, INC., MarketAxess NOC, and MARKETAXESS POST-TRADE LIMITED.
  • Intercontinental Exchange has agreed to acquire MarketAxess Holdings, Inc.
  • The inventory includes a prefix registered to Cogent Communications, LLC (38.108.243.0/24) and one registered to Abuse-C Role (194.69.82.0/24), which do not match the primary corporate registrant.

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

6 upstream, 1 downstream and 7 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS6939Hurricane Electric LLC497
AS174Cogent Communications, LLC139
AS6461Zayo Bandwidth116
AS8220COLT Technology Services Group Limited107
AS3356Level 3 Parent, LLC60
AS3257GTT Communications Inc.2

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-23, 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 8 prefixes · 3.33K addresses IPv6 0 prefixes

CountryNamePrefixes
USUnited States of America8

Registry

Allocation record

APNIC · via Atlas (registry + RDAP)
Registry
APNIC
Handle
AS40841
Registry name
MARKETAXESS-INC-AS
Registrant
MARKETAXESS HOLDINGS, INC.
Abuse contact
NETWORK@marketaxess.com
Registered
2008-04-29
Last changed
2022-09-06
Allocation
assigned

Routing security

RPKI and IRR

Full detail
RPKI
0% valid · 0 valid, 15 with no ROA
ROAs
1 authorising AS40841
ASPA
no ASPA record
IRR
87% registered · 13 of 15 announcements
Route objects
20 naming AS40841

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 1,779 prefixes, as published 2026-10-24. 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