Autonomous system
AS11516 ASN-ESB - Eastern Suffolk BOCES
Education ARIN
Summary
Eastern Suffolk BOCES
education legacy
ASN-ESB is Eastern Suffolk BOCES, a Board of Cooperative Educational Services on Long Island, New York. BOCES are New York State regional agencies that provide shared services, including network and internet service, to the public school districts in their region.
What it's used for
- Aggregated internet connectivity for the school districts of eastern Suffolk County. This is the classic K-12 regional service model: individual districts do not each run their own AS, so the BOCES holds the AS number and the address space and hands blocks down to member districts.
- RIS sees 57 announced IPv4 prefixes totalling 14,592 addresses, no IPv6, and just 3 observed BGP neighbours.
Notable
- The routing shape is the interesting part and it is exactly what the service model predicts. Fifty-seven prefixes is a lot for a network with only three BGP neighbours, and every prefix in the RIS window is a /24 out of
170.161.0.0/16:170.161.23.0/24,170.161.64.0/24,170.161.129.0/24, and so on. An organisation deaggregating one /16 into dozens of /24s is not building a sprawling multi-origin inventory; it is carving a single allocation into per-district or per-site blocks and announcing them individually. - Every prefix checked is registered to Eastern Suffolk BOCES under the
ESBOCEShandle. Registrant and holder agree throughout, so the deaggregation is internal structure, not third-party space.
Interesting
- Classification here follows what the space carries rather than the legal form of the holder. A BOCES is a government-created education agency, but the addresses serve schools, so this reads as education rather than government.
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 2026-11-08, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 41 prefixes · 14.34K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 41 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS11516- Registry name
- ASN-ESB
- Registrant
- Eastern Suffolk BOCES
- Abuse contact
- arin@esboces.org
- Registered
- 2007-05-14
- Last changed
- 2012-03-02
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 56 with no ROA
- ROAs
- 0 authorising AS11516
- ASPA
- no ASPA record
- IRR
- 100% registered · 56 of 56 announcements
- Route objects
- 1 naming AS11516
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: 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