asn.dev

Autonomous system

AS18897 MONTANA-SKY-NETWORKS-INC

Unclassified ARIN

IPv4 addresses 20.22K 8 prefixes
IPv6 prefixes 24 counted as prefixes, not addresses
Countries 1 mostly US
Exchanges 0 recorded by PCH
Upstreams 3 3 downstream
Flagged prefixes 0 none

Summary

Montana Sky Networks

United States of America · AI-generated

isp residential business satellite

MONTANA-SKY-NETWORKS-INC is operated by Montana Sky Networks, Inc.

What it's used for

  • The address space carries residential and business internet access, evidenced by reverse DNS records pointing to montanasat.net and netnames such as MONTANASKYNET and MONTANASKYWEST.
  • The AS announces 20,224 IPv4 addresses across 8 prefixes and 24 IPv6 prefixes, while maintaining only 5 observed neighbours, a ratio indicative of an access or eyeball network rather than a transit provider.

Notable

  • Registrants largely align with the announcer, including Montana Sky Networks, Inc. and Montana Sky West LLC, with some entries referencing the MontanaSky Network Opperations Center.
  • The address inventory consists of four /20 blocks and four smaller sub-allocations within the 66.135.0.0/16 range, reflecting a consolidated but segmented corporate 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

3 upstream, 3 downstream and 9 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS20055Wholesail networks LLC464
AS20119Arrow Group Inc.268
AS6653Vero Broadband120

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-14, 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 8 prefixes · 20.22K addresses IPv6 24 prefixes

CountryNamePrefixes
USUnited States of America32

Registry

Allocation record

ARIN · via Atlas (registry + RDAP)
Registry
ARIN
Handle
AS18897
Registry name
MONTANA-SKY-NETWORKS-INC
Registrant
Montana Sky Networks, Inc.
Abuse contact
noc@montanasky.net
Registered
2007-01-19
Last changed
2022-02-22
Allocation
assigned

Routing security

RPKI and IRR

Full detail
RPKI
0% valid · 0 valid, 17 with no ROA
ROAs
0 authorising AS18897
ASPA
no ASPA record
IRR
71% registered · 12 of 17 announcements
Route objects
12 naming AS18897

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 1,772 prefixes, as published 2026-10-15. 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