asn.dev

Autonomous system

AS19329 MCNET

Unclassified ARIN

IPv4 addresses 2.56K 2 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly US
Exchanges 0 recorded by PCH
Upstreams 2 0 downstream
Flagged prefixes 0 none

Summary

Martin County Board of County Commissioners

United States of America · AI-generated

government county network

MCNET is the autonomous system for Martin County Board of County Commissioners.

What it's used for

  • The address space is registered under the netname NETBLK-MCNET for the Martin County Board of County Commissioners, indicating a municipal government network.
  • The AS announces 2560 IPv4 addresses across 2 prefixes with 2 observed neighbours, a ratio consistent with a small, self-contained local area network rather than a transit or access provider.

Notable

  • The RDAP registrants for both announced prefixes, 198.136.32.0/21 and 198.136.40.0/23, match the AS holder, confirming direct ownership of the address space.
  • The inventory consists of two contiguous IPv4 blocks with no announced IPv6 prefixes, representing a modest internal corporate or governmental estate.

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

2 upstream, 0 downstream and 2 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS33132Crown Castle Fiber LLC94
AS30404Blue Stream85

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-28, 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 2 prefixes · 2.56K addresses IPv6 0 prefixes

CountryNamePrefixes
USUnited States of America2

Registry

Allocation record

ARIN · via Atlas (registry + RDAP)
Registry
ARIN
Handle
AS19329
Registry name
MCNET
Registrant
Martin County Board of County Commissioners
Abuse contact
netadmin@martin.fl.us
Registered
2000-12-18
Last changed
2024-07-23
Allocation
assigned

Routing security

RPKI and IRR

Full detail
RPKI
0% valid · 0 valid, 3 with no ROA
ROAs
0 authorising AS19329
ASPA
no ASPA record
IRR
100% registered · 3 of 3 announcements
Route objects
4 naming AS19329

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: 448 networks and 1,849 prefixes, as published 2026-10-29. 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