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Autonomous System

AS17161

Marsh Inc.

Announced IPs
38,400
CIDR prefixes
25
ASN
AS17161

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 v1.2.0 — a transparent heuristic, not a definitive verdict. How it works →

Top CIDR ranges

CIDRIPsPTR DensityOrganizationCountryStateCity
167.245.160.0/19 8.2K
1.2%
Marsh Inc. US Virginia Ashburn
167.245.16.0/20 4.1K
0.2%
Marsh Inc. US
205.156.96.0/20 4.1K
0.9%
Marsh Inc. US
205.156.128.0/20 4.1K
9.9%
Marsh Inc. US Texas Dallas
167.245.8.0/21 2.0K
11.0%
Marsh Inc. US
167.245.32.0/21 2.0K
2.2%
Marsh Inc. US
205.156.64.0/21 2.0K
5.5%
Marsh Inc. US
205.156.88.0/21 2.0K
7.6%
Marsh Inc. US
205.156.104.0/21 2.0K
1.3%
Marsh Inc. US
205.156.144.0/21 2.0K
2.2%
Marsh Inc. US
167.245.40.0/22 1.0K
0.4%
Marsh Inc. US
167.245.104.0/22 1.0K
10.1%
Marsh Inc. US
205.156.112.0/22 1.0K
0.0%
Marsh Inc. US
205.156.152.0/22 1.0K
6.8%
Marsh Inc. US Ohio Westlake
167.245.100.0/23 512
0.0%
Marsh Inc. US
167.245.108.0/23 512
1.2%
Marsh Inc. US
205.156.160.0/23 512
15.6%
Marsh Inc. US
167.245.3.0/24 256
0.0%
Marsh Inc. US
167.245.159.0/24 256
0.0%
Marsh Inc. US
168.168.150.0/24 256
0.0%
Marsh Inc. US
168.168.200.0/24 256
0.0%
Marsh Inc. US
205.156.72.0/24 256
0.0%
Marsh Inc. US
205.156.84.0/24 256
2.3%
Marsh Inc. US Georgia Atlanta
205.156.117.0/24 256
0.4%
Marsh Inc. US
205.156.164.0/24 256
1.6%
Marsh Inc. US

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS17161 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

PrefixAnnouncement samplesLast seen
167.245.104.0/22 29,229 2026-09-15 01:25:21
167.245.108.0/23 29,038 2026-09-15 01:25:12
205.156.136.0/21 27,778 2026-09-15 01:25:12
205.156.152.0/22 27,534 2026-09-15 01:25:21
205.156.160.0/23 27,527 2026-09-15 01:25:21
205.156.134.0/24 27,374 2026-09-15 01:25:21
205.156.135.0/24 27,354 2026-09-15 01:25:21
205.156.144.0/21 27,292 2026-09-15 01:25:12
205.156.132.0/23 27,245 2026-09-15 01:25:12
205.156.128.0/22 24,811 2026-09-15 01:25:12
205.156.164.0/24 24,796 2026-09-15 01:25:12
205.156.72.0/24 15,593 2026-09-15 01:22:04
205.156.64.0/22 12,795 2026-07-13 06:46:32
205.156.68.0/22 12,408 2026-07-13 06:46:32
205.156.108.0/22 12,391 2026-07-13 06:46:32
205.156.104.0/22 12,268 2026-07-13 06:46:32
168.168.150.0/24 11,767 2026-07-13 18:25:23
167.245.16.0/22 11,528 2026-09-15 01:23:13
167.245.24.0/22 11,507 2026-09-15 01:23:13
167.245.36.0/22 11,491 2026-09-15 01:23:13
167.245.32.0/22 11,490 2026-09-15 01:23:13
167.245.12.0/22 11,478 2026-09-15 01:23:13
167.245.8.0/22 11,466 2026-09-15 01:23:13
167.245.20.0/22 11,465 2026-09-15 01:23:13
167.245.28.0/22 11,460 2026-09-15 01:23:13
167.245.40.0/22 11,452 2026-09-15 01:23:13
167.245.3.0/24 11,396 2026-09-15 01:23:13
205.156.64.0/21 9,345 2026-07-13 06:46:32
205.156.104.0/21 9,316 2026-07-13 06:46:32
167.245.100.0/23 8,400 2026-09-15 01:23:13
167.245.159.0/24 8,352 2026-09-15 01:22:04
168.168.200.0/24 7,164 2026-07-13 06:46:15
167.245.160.0/19 6,687 2026-09-15 01:22:11
205.156.84.0/24 6,532 2026-09-15 01:22:11
205.156.88.0/21 4,868 2026-07-13 06:46:32
205.156.96.0/22 4,854 2026-07-13 06:46:32
205.156.102.0/23 4,822 2026-07-13 06:46:32
205.156.112.0/22 4,712 2026-07-13 06:46:32
205.156.100.0/23 4,704 2026-07-13 06:46:32
205.156.117.0/24 4,702 2026-07-13 06:46:32
167.245.101.240/28 2 2026-06-05 17:05:51

Frequently Asked Questions

What is AS17161?

AS17161 is an Autonomous System Number assigned to Marsh 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 AS17161 announce?

AS17161 announces 38.4K IPv4 addresses distributed across 25 routed CIDR prefixes. The network is registered in United States.

Who operates AS17161?

AS17161 is operated by Marsh Inc.. The organization is based in United States. You can view all IP ranges and related ASNs on the organization page.

What country is AS17161 registered in?

AS17161 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: 2026-09-15 01:54:06 UTC
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