Autonomous system
AS33501 MTDIGITAL
Unclassified ARIN
Summary
Montana Digital
residential isp montana fixed-wireless
MTDIGITAL is the AS handle for Montana Digital, LLC., a communications provider operating in the United States.
What it's used for
- The address space carries residential customer traffic, evidenced by reverse DNS entries such as
CUST189.254.mtnmax.netandCUST177.126.mtnmax.net. - The network announces 4096 IPv4 addresses across 6 prefixes and 1 IPv6 prefix, with 7 observed neighbours, indicating a regional access network rather than a transit provider.
Notable
- All registrants for the announced IPv4 prefixes are listed as
Skylink Digital, which differs from the AS holderMontana Digital, LLC. - The address inventory consists of contiguous /23 and /24 blocks within the 72.250.176.0/21 range, alongside a single /32 IPv6 prefix.
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 2026-10-20, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 6 prefixes · 4.10K addresses IPv6 1 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 7 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS33501- Registry name
- MTDIGITAL
- Registrant
- Montana Digital, LLC.
- Abuse contact
- ccavin@mtdig.com
- Registered
- 2005-01-05
- Last changed
- 2012-03-20
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 100% valid · 6 valid, 0 with no ROA
- ROAs
- 3 authorising AS33501
- ASPA
- no ASPA record
- IRR
- 100% registered · 6 of 6 announcements
- Route objects
- 21 naming AS33501
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 1,778 prefixes, as published 2026-10-20. 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