asn.dev

Autonomous system

AS53833 ICISD - Ionia County ISD

Unclassified ARIN

IPv4 addresses 5.38K 7 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

Ionia County ISD

United States of America · AI-generated

education k12 michigan network

ICISD is operated by Ionia County ISD.

What it's used for

  • The address space carries the network infrastructure for the Ionia County Intermediate School District, as indicated by the netname IONIAISD and registrant Ionia County ISD across all announced prefixes.
  • The AS announces 5,376 IPv4 addresses across 7 prefixes with a single observed neighbour, a ratio that indicates an isolated access or internal network rather than a transit provider.
  • Traffic from this AS consists of data for school staff, students, and administrative systems within the Ionia County school district in Michigan.

Notable

  • All registrants agree with the announcer, consistently listing Ionia County ISD for every prefix in the inventory.
  • The address inventory is a contiguous block within the 66.39.0.0/16 range, subdivided into seven prefixes of varying sizes, with no IPv6 prefixes announced.

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
AS401307Michigan Statewide Educational Network650

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 7 prefixes · 5.38K addresses IPv6 0 prefixes

CountryNamePrefixes
USUnited States of America7

Registry

Allocation record

ARIN · via Atlas (registry + RDAP)
Registry
ARIN
Handle
AS53833
Registry name
ICISD
Registrant
Ionia County ISD
Abuse contact
jmilewski@ioniaisd.org
Registered
2023-06-29
Last changed
2023-06-29
Allocation
assigned

Routing security

RPKI and IRR

Full detail
RPKI
100% valid · 10 valid, 0 with no ROA
ROAs
7 authorising AS53833
ASPA
no ASPA record
IRR
100% registered · 10 of 10 announcements
Route objects
16 naming AS53833

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