asn.dev

Autonomous system

AS27021 AS-DGX

Unclassified ARIN

IPv4 addresses 7.17K 10 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly US
Exchanges 0 recorded by PCH
Upstreams 4 0 downstream
Flagged prefixes 0 none

Summary

Quest Diagnostics

United States of America · AI-generated

business healthcare corporate laboratory

AS-DGX is held by Quest Diagnostics, Inc.

What it's used for

  • The address space carries corporate and laboratory infrastructure, evidenced by netnames NET-DGX, QUEST, LABONE-NET, SLN, and CBTS-1196-MEDPLUS associated with registrants Quest Diagnostics, Inc., LabOne, Inc., Solstas Lab Partners, LLC, and MedPlus.
  • The AS announces 7168 IPv4 addresses across 10 prefixes with 4 observed neighbours, a ratio indicating an internal corporate estate rather than a transit or access network.

Notable

  • Registrants include Quest Diagnostics, Inc., LabOne, Inc., Solstas Lab Partners, LLC, Spectrum Laboratory, and MedPlus, reflecting a portfolio of acquired or affiliated laboratory entities.
  • Quest Diagnostics is a major clinical laboratory services company; the presence of LabOne and Solstas Lab Partners suggests historical acquisitions or partnerships in the diagnostic testing sector.
  • The inventory consists of 10 IPv4 prefixes with no IPv6 announcements, including a large /20 block and several smaller /23 and /24 blocks.

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

4 upstream, 0 downstream and 4 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS3356Level 3 Parent, LLC590
AS701Verizon Business365
AS11367WorldNet Telecommunications, LLC41
AS11992Liberty Mobile Puerto Rico Inc.18

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-26, 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 10 prefixes · 7.17K addresses IPv6 0 prefixes

CountryNamePrefixes
USUnited States of America10

Registry

Allocation record

ARIN · via Atlas (registry + RDAP)
Registry
ARIN
Handle
AS27021
Registry name
AS-DGX
Registrant
Quest Diagnostics, Inc.
Abuse contact
inf-tech@questdiagnostics.com
Registered
2003-01-14
Last changed
2014-05-30
Allocation
assigned

Routing security

RPKI and IRR

Full detail
RPKI
0% valid · 0 valid, 17 with no ROA
ROAs
0 authorising AS27021
ASPA
no ASPA record
IRR
6% registered · 1 of 17 announcements 1 other origin
Route objects
1 naming AS27021

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: 446 networks and 1,852 prefixes, as published 2026-10-27. 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