asn.dev

Autonomous system

AS40321 ESB - Emigrant Bank

Unclassified ARIN

IPv4 addresses 1.54K 3 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly US
Exchanges 0 recorded by PCH
Upstreams 2 0 downstream
Flagged prefixes 0 none

Summary

Emigrant Bank

United States of America · AI-generated

banking corporate private

The AS handle ESB is operated by Emigrant Bank.

What it's used for

  • The address space carries internal corporate infrastructure, evidenced by netnames EMIGRANT-BANK, UU-65-198-73-D12, and VZ-MGRNTSVNGSBNK-1, and reverse DNS entries pointing to static.emigrant.com.
  • The network announces 1536 IPv4 addresses across 3 prefixes with only 2 observed neighbours, indicating a small, self-contained internal estate rather than a transit or access network.
  • Traffic from this AS consists of office workers, internal systems, and web/API endpoints for the bank's operations, consistent with its role as a privately held commercial bank headquartered in New York City.

Notable

  • Registrants align with the announcer, listing Emigrant Bank and Emigrant Savings Bank across the announced prefixes.
  • The operator was formerly known as Emigrant Savings Bank before being rebranded to Emigrant Bank.
  • The inventory consists of three distinct IPv4 prefixes with no IPv6 announcements, reflecting a segmented internal corporate address space.

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

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

ASNetworkPaths seen
AS54004Cablevision Lightpath LLC138
AS701Verizon Business39

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

Shape and geography

IPv4 3 prefixes · 1.54K addresses IPv6 0 prefixes

CountryNamePrefixes
USUnited States of America3

Registry

Allocation record

ARIN · via Atlas (registry + RDAP)
Registry
ARIN
Handle
AS40321
Registry name
ESB
Registrant
Emigrant Bank
Abuse contact
riveral@emigrant.com
Registered
2007-01-25
Last changed
2014-09-24
Allocation
assigned

Routing security

RPKI and IRR

Full detail
RPKI
33% valid · 1 valid, 2 with no ROA
ROAs
1 authorising AS40321
ASPA
no ASPA record
IRR
67% registered · 2 of 3 announcements
Route objects
2 naming AS40321

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

Cross-check