asn.dev

Autonomous system

AS21704 ASN-21704 - New York City Board of Education

Unclassified ARIN

IPv4 addresses 65.79K 21 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly US
Exchanges 0 recorded by PCH
Upstreams 1 0 downstream
Flagged prefixes 0 none

Summary

New York City Department of Education

United States of America · AI-generated

education government enterprise network

ASN-21704 is held by the New York City Department of Education.

What it's used for

  • The address space carries internal network infrastructure for the NYC Public Schools system, evidenced by the netname NYCENET and reverse DNS entries pointing to nycboe.org.
  • The AS announces 65,792 IPv4 addresses across 21 prefixes while maintaining only 1 observed neighbour, a ratio indicative of a large, self-contained internal corporate estate rather than a transit or access provider.

Notable

  • All sampled registrants align with the announcer, consistently listing Department of Education; Abuse; NYCPS-DIIT under the netname NYCENET.
  • The inventory is finely subdivided into 21 distinct prefixes, including a mix of /18, /19, /20, /21, /22, /23, and /24 blocks, reflecting site-by-site segmentation of the district's network.
  • A single /24 prefix, 9.179.230.0/24, is announced alongside the primary 165.155.0.0/16 space, representing a distinct block within the inventory.

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

1 upstream, 0 downstream and 1 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS46887Crown Castle Fiber LLC1,282

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-11-08, 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 21 prefixes · 65.79K addresses IPv6 0 prefixes

CountryNamePrefixes
USUnited States of America21

Registry

Allocation record

ARIN · via Atlas (registry + RDAP)
Registry
ARIN
Handle
AS21704
Registry name
ASN-21704
Registrant
New York City Board of Education
Abuse contact
network-complaints@schools.nyc.gov
Registered
2024-06-06
Last changed
2024-06-06
Allocation
assigned

Routing security

RPKI and IRR

Full detail
RPKI
0% valid · 0 valid, 24 with no ROA
ROAs
2 authorising AS21704
ASPA
no ASPA record
IRR
0% registered · 0 of 24 announcements 9 other origin
Route objects
0 naming AS21704

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: 455 networks and 1,854 prefixes, as published 2026-11-09. 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