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Autonomous System

AS18897

Montana Sky Networks, Inc.

Announced IPs
21,247
CIDR prefixes
20
ASN
AS18897

Reputation · trust score

A transparent 0–100 signal. Every entity starts at a neutral baseline of 65; threat-intel blocklists, exposure, reverse-DNS, routing and allocation each adjust it up or down. Higher is more trustworthy.

65/100
Moderate
How this score is built

Experimental · trust-vectors model v1.3.0 — a transparent heuristic, not a definitive verdict. How it works →

Top CIDR ranges

CIDRIPsPTR DensityOrganizationCountryStateCity
66.135.64.0/20 4.1K
97.4%
Montana Sky Networks, Inc. US Montana Kalispell
107.191.160.0/20 4.1K
98.0%
Montana Sky Networks, Inc. US Montana Libby
208.123.192.0/20 4.1K
98.1%
Montana Sky Networks, Inc. US Montana Kalispell
216.211.176.0/20 4.1K
97.9%
Montana Sky Networks, Inc. US Montana Kalispell
66.135.80.0/21 2.0K
97.5%
Montana Sky Networks, Inc. US Montana Kalispell
107.191.168.0/21 2.0K
97.9%
Montana Sky Networks, Inc. US Montana Libby
66.135.88.0/22 1.0K
97.9%
Montana Sky Networks, Inc. US — —
107.191.164.0/22 1.0K
97.7%
Montana Sky Networks, Inc. US Montana Libby
131.143.132.0/22 1.0K
0.0%
Montana Sky Networks, Inc. US — —
66.135.92.0/23 512
97.5%
Montana Sky Networks, Inc. US — —
107.191.162.0/23 512
98.2%
Montana Sky Networks, Inc. US Montana Libby
66.135.95.0/24 256
7.8%
Montana Sky Networks, Inc. US — —
107.191.160.0/24 256
98.8%
Montana Sky Networks, Inc. US Montana Libby
107.191.161.0/25 128
98.4%
Montana Sky Networks, Inc. US Montana Libby
107.191.161.128/26 64
98.4%
Montana Sky Networks, Inc. US Montana Libby
107.191.161.224/27 32
100.0%
Montana Sky Networks, Inc. US Montana Libby
107.191.161.192/28 16
100.0%
Montana Sky Networks, Inc. US Montana Libby
107.191.161.216/29 8
100.0%
Montana Sky Networks, Inc. US Montana Libby
107.191.161.208/30 4
100.0%
Montana Sky Networks, Inc. US Montana Libby
107.191.161.214/31 2
100.0%
Montana Sky Networks, Inc. US Montana Libby
107.191.161.212/32 1
100.0%
Montana Sky Networks, Inc. US Montana Libby

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS18897 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

PrefixAnnouncement samplesLast seen
66.135.76.0/22 30,383 2026-11-13 05:48:53
66.135.72.0/22 30,147 2026-11-13 05:48:53
66.135.80.0/22 22,681 2026-11-13 04:20:52
66.135.64.0/21 22,641 2026-11-13 04:20:52
66.135.92.0/22 22,596 2026-11-13 04:20:52
66.135.88.0/22 22,594 2026-11-13 04:20:52
66.135.84.0/23 22,578 2026-11-13 04:20:52
66.135.86.0/24 22,566 2026-11-13 04:20:52
216.211.176.0/20 22,306 2026-11-13 04:20:56
208.123.192.0/20 22,225 2026-11-13 04:21:23
107.191.160.0/20 16,820 2026-11-13 07:32:20
66.135.87.0/24 16,673 2026-11-13 07:32:20
131.143.132.0/22 1,261 2026-11-13 07:33:38

Frequently Asked Questions

What is AS18897?

AS18897 is an Autonomous System Number assigned to Montana Sky Networks, Inc.. An ASN identifies a network that controls a specific set of IP addresses and determines how traffic is routed across the internet via BGP (Border Gateway Protocol).

How many IP addresses does AS18897 announce?

AS18897 announces 21.2K IPv4 addresses distributed across 20 routed CIDR prefixes. The network is registered in United States.

Who operates AS18897?

AS18897 is operated by Montana Sky Networks, Inc.. The organization is based in United States. You can view all IP ranges and related ASNs on the organization page.

What country is AS18897 registered in?

AS18897 is registered in United States. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.

Last updated: 2026-11-13 08:39:05 UTC
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