asn.dev

Autonomous system

AS23538 JOHNSON-COUNTY-ASN

Unclassified ARIN

IPv4 addresses 256 1 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

Johnson County Iowa

United States of America · AI-generated

government county iowa small

The AS handle JOHNSON-COUNTY-ASN is held by Johnson County Iowa.

What it's used for

  • The address space is registered under the netname JOHNSON-COUNTY with registrant Johnson County Iowa, indicating a municipal government network.
  • The AS announces a single IPv4 prefix, 192.234.91.0/24, comprising 256 addresses, with 0 IPv6 prefixes.
  • With 1 observed neighbour, the routing footprint is minimal, consistent with a small, self-contained local network rather than a transit or large-scale access provider.

Notable

  • The RDAP registrant Johnson County Iowa matches the registry holder and AS handle, confirming consistent ownership.
  • The address inventory consists of a single /24 block, which is a compact allocation typical for a county government's internal infrastructure or limited public services.

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
AS393238ImOn Communications, LLC65

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-16, 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 1 prefixes · 256 addresses IPv6 0 prefixes

CountryNamePrefixes
USUnited States of America1

Registry

Allocation record

ARIN · via Atlas (registry + RDAP)
Registry
ARIN
Handle
AS23538
Registry name
JOHNSON-COUNTY-ASN
Registrant
Johnson County Iowa
Abuse contact
bhorning@johnsoncountyiowa.gov
Registered
2017-11-10
Last changed
2017-11-10
Allocation
assigned

Routing security

RPKI and IRR

Full detail
RPKI
0% valid · 0 valid, 1 with no ROA
ROAs
0 authorising AS23538
ASPA
no ASPA record
IRR
100% registered · 1 of 1 announcements
Route objects
1 naming AS23538

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: 442 networks and 1,783 prefixes, as published 2026-10-17. 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