asn.dev

Autonomous system

AS3734 SCCO

Education ARIN

IPv4 addresses 142K 49 prefixes
IPv6 prefixes 2 counted as prefixes, not addresses
Countries 1 mostly US
Exchanges 0 recorded by PCH
Upstreams 3 1 downstream
Flagged prefixes 24 see address space

Summary

Santa Clara County Office of Education

United States · AI-generated

education legacy

The network of the Santa Clara County Office of Education (SCCO), run from its Information Systems Center in San Jose, California.

What it's used for

  • Shared networking for public education across Santa Clara County — the county office plus the school districts and campuses it serves in the heart of Silicon Valley.

Notable

  • A large holding for a K-12 agency: roughly 140,000 IPv4 addresses, including the legacy 143.254.0.0/16 and several older /18s and /19s.
  • Institutional address space, aggregated on behalf of many districts rather than sold to subscribers.

Interesting

  • County offices of education acting as regional network providers is a distinctly Californian pattern, and it explains why a school-district intermediary ended up with a 1994 AS number and a legacy /16.

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

3 upstream, 1 downstream and 4 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS2152CENIC588
AS6461Zayo Bandwidth288
AS395226Sacramento County Office of Education63

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-24, 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 49 prefixes · 142K addresses IPv6 2 prefixes

CountryNamePrefixes
USUnited States of America51

Registry

Allocation record

ARIN · via Atlas (registry + RDAP)
Registry
ARIN
Handle
AS3734
Registry name
SCCO
Registrant
Santa Clara County Office of Education
Abuse contact
noc@sccoe.org
Registered
1994-07-28
Last changed
2026-03-09
Allocation
assigned

Routing security

RPKI and IRR

Full detail
RPKI
0% valid · 0 valid, 16 with no ROA
ROAs
0 authorising AS3734
ASPA
no ASPA record
IRR
100% registered · 16 of 16 announcements
Route objects
18 naming AS3734

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 2026-10-24. 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