Autonomous system
AS13620 EMBLEMHEALTH
Unclassified ARIN
Summary
EmblemHealth
finance business enterprise
The addresses are still registered to the company that merged away, under a netname built from its initials.
What it's used for
- A health insurer's network. 768 addresses across three IPv4 prefixes, three observed BGP neighbours, and no IPv6 announced.
Notable
- Two blocks are netname
GHI-1, registered to a health insurance company that is not the current holder of the AS number. - All three prefixes are non-adjacent /24s inside
204.76. - One prefix's registry lookup failed, so nothing is known about its registration here.
- First seen in the routing archive on 2002-03-23, an actual date rather than the archive's start.
- Nine addresses were queried for reverse DNS and none returned a name.
Interesting
- The AS object carries the merged company's brand and the address objects carry the predecessor's. Insurance mergers create a new name for the market and leave the old entities intact underneath for years, and the registry records the underneath.
- Three separate /24s from one range, with gaps, means the space was assigned in three requests rather than one, and the pieces in between went to other organisations. That range holds several unrelated bodies of similar vintage.
- Nothing in the reverse zone answers across all 768 addresses, which for a health insurer is the right instinct. Member portals and claims systems do not benefit from being named.
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
Internet exchanges
No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-30, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 2 prefixes · 512 addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 2 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS13620- Registry name
- EMBLEMHEALTH
- Registrant
- EMBLEMHEALTH SERVICES COMPANY, LLC
- Abuse contact
- NetworkingDepartment@emblemhealth.com
- Registered
- 2012-09-24
- Last changed
- 2012-09-24
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 3 with no ROA
- ROAs
- 0 authorising AS13620
- ASPA
- no ASPA record
- IRR
- 100% registered · 3 of 3 announcements
- Route objects
- 7 naming AS13620
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: 447 networks and 1,848 prefixes, as published 2026-10-31. 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