asn.dev

Autonomous system

AS3756 NYSERNET3-AS

Education ARIN

IPv4 addresses 7.17K 4 prefixes
IPv6 prefixes 1 counted as prefixes, not addresses
Countries 1 mostly US
Exchanges 0 recorded by PCH
Upstreams 2 0 downstream
Flagged prefixes 0 none

Summary

NYSERNet

United States · AI-generated

education research legacy

An actively routed ASN of NYSERNet (NYSERNET3-AS), the non-profit New York State Education and Research Network, serving the state's higher-education and research community.

What it's used for

  • Research-and-education networking for NYSERNet members: campus transit, peering, and connections onward to national research networks.
  • Announces several thousand legacy IPv4 addresses on behalf of NYSERNet and the institutions it serves.

Notable

  • The address space is institutional. Expect campuses, research groups, and academic services here, not consumer broadband.
  • Part of a consecutive run of NYSERNet AS numbers alongside AS3754 and AS3755, all under the same NYSERNET3-AS handle.

Interesting

  • Regional networks like NYSERNet were the connective tissue of the NSFNET era: campuses connected to the regional, the regional connected to the national backbone. The low AS number is a direct fossil of that architecture.

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 4 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS3755NYSERNet284
AS3754NYSERNet46

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-20, 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 4 prefixes · 7.17K addresses IPv6 1 prefixes

CountryNamePrefixes
USUnited States of America5

Registry

Allocation record

ARIN · via Atlas (registry + RDAP)
Registry
ARIN
Handle
AS3754
Registry name
NYSERNET3-AS
Registrant
NYSERNet
Abuse contact
abuse@nysernet.org
Registered
1994-08-08
Last changed
2022-08-25
Allocation
assigned

Routing security

RPKI and IRR

Full detail
RPKI
100% valid · 8 valid, 0 with no ROA
ROAs
10 authorising AS3756
ASPA
no ASPA record
IRR
100% registered · 8 of 8 announcements
Route objects
9 naming AS3756

Reputation

Classification and threat

Education University, school or national research and education network.

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 2026-10-21. 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