Autonomous system
AS4451 ASN1 - 1199SEIU National Benefit Funds
Unclassified ARIN
Summary
1199SEIU National Benefit Funds
enterprise legacy
ASN1 belongs to the 1199SEIU National Benefit Funds, the New York organisation that administers health and benefit funds for members of the 1199SEIU healthcare workers union.
What it's used for
- Corporate networking for a benefits administrator — member services, claims systems, and office infrastructure.
- A small footprint of about a thousand addresses, consistent with an organisation running its own network rather than selling connectivity.
Notable
- Institutional address space belonging to a union benefit fund, so IPs here are staff and back-office systems rather than consumers.
- The low AS number is not an early-internet artefact. ARIN registered both the organisation and this ASN in 2009, so the number was reclaimed and reissued to a modern holder.
Interesting
- The
ASN1handle is one of the more misleading in the registry. It looks like a claim on the first AS number ever issued, but it simply means this holder's first (and only) AS number. The real AS1 belongs to Level 3 / Lumen — see AS1.
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 2026-11-11, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 4 prefixes · 1.02K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 4 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS4451- Registry name
- ASN1
- Registrant
- 1199SEIU National Benefit Funds
- Abuse contact
- nisola@1199nbf.org
- Registered
- 2009-09-15
- Last changed
- 2012-03-02
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 100% valid · 4 valid, 0 with no ROA
- ROAs
- 4 authorising AS4451
- ASPA
- no ASPA record
- IRR
- 75% registered · 3 of 4 announcements
- Route objects
- 3 naming AS4451
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: 453 networks and 1,846 prefixes, as published 2026-11-11. 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