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Autonomous System

AS397162

Sumofiber

Announced IPs
7,680
CIDR prefixes
5
ASN
AS397162

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.

58/100
Caution
How this score is built

Experimental · trust-vectors model v1.1.0 — a transparent heuristic, not a definitive verdict. How it works →

⚠ 4 MOAS prefixes — multiple origin ASNs detected

All MOAS anomalies →

A previously stable prefix originated by AS397162 is now also announced by another ASN (MOAS — Multiple-Origin AS), detected from our RIPE RIS collectors. Often benign (anycast, multi-homing, or a recent transfer) — but it can signal a route leak or prefix hijack, so it's worth inspecting.

PrefixOrigin ASNsLast detected (UTC)
38.148.106.0/24 AS4226, AS397162 2026-07-17 16:22:36
38.148.110.0/24 AS4226, AS397162 2026-07-17 16:22:36
38.148.104.0/24 AS4226, AS397162 2026-07-17 16:22:36
38.148.109.0/24 AS4226, AS397162 2026-07-17 16:22:36

Network profile

Source: PeeringDB →
Network type Cable/DSL/ISP
Traffic level 10-20Gbps
Geographic scope Not Disclosed
Traffic ratio Heavy Inbound
Peering policy Open
IRR record AS397162

Top CIDR ranges

CIDRIPsPTR DensityOrganizationCountryStateCity
38.148.16.0/20 4.1K
5.9%
Sumofiber US Idaho Ammon
38.148.24.0/21 2.0K
0.0%
US
38.70.240.0/22 1.0K
92.9%
Sumofiber US Idaho Idaho Falls
130.51.28.0/22 1.0K
0.0%
Sumofiber US Idaho Idaho Falls
162.221.116.0/22 1.0K
52.7%
Sumofiber US Idaho Idaho Falls
38.59.222.0/23 512
0.0%
Sumofiber US
38.148.104.0/24 256
0.0%
US
38.148.106.0/24 256
0.0%
US Idaho Ammon
38.148.109.0/24 256
0.0%
US Idaho Mountain Home
38.148.110.0/24 256
0.0%
US Idaho Mountain Home

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS397162 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

PrefixAnnouncement samplesLast seen
38.148.106.0/24 134,098 2026-07-18 10:52:20
38.148.110.0/24 134,034 2026-07-18 10:52:20
38.148.109.0/24 134,025 2026-07-18 10:52:20
38.148.104.0/24 130,500 2026-07-18 10:52:20
38.59.222.0/24 121,785 2026-07-18 10:52:20
38.59.223.0/24 121,771 2026-07-18 10:52:20
38.70.243.0/24 118,136 2026-07-18 10:52:20
38.70.242.0/24 118,134 2026-07-18 10:52:20
38.70.240.0/23 118,111 2026-07-18 10:52:20
130.51.28.0/22 117,967 2026-07-18 10:52:56
38.148.24.0/21 110,245 2026-07-18 10:52:20
38.148.16.0/21 107,931 2026-07-18 10:52:20
162.221.118.0/24 87,697 2026-07-18 10:52:56
162.221.116.0/24 84,017 2026-07-18 10:52:56
162.221.119.0/24 83,951 2026-07-18 10:52:56
162.221.117.0/24 83,902 2026-07-18 10:52:56

Frequently Asked Questions

What is AS397162?

AS397162 is an Autonomous System Number assigned to Sumofiber. 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 AS397162 announce?

AS397162 announces 7.7K IPv4 addresses distributed across 5 routed CIDR prefixes. The network is registered in United States.

Who operates AS397162?

AS397162 is operated by Sumofiber. The organization is based in United States. You can view all IP ranges and related ASNs on the organization page.

What country is AS397162 registered in?

AS397162 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: 2026-07-18 11:25:31 UTC
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