Autonomous System details

AS17161

Marsh Inc. · marsh.com

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AS17161 – Marsh Inc.

Field	Value
Country	United States
Website	marsh.com
Hosted domains	844
IPv4 addresses	37,888
IPv6 addresses	0
ASN type	Hosting
Registry	arin
Allocated	25 years ago on Aug 01, 2000
Updated	3 years ago on Dec 02, 2022

Netblock	Company	Num of IPs
167.245.160.0/19	Marsh Inc.	8,192
205.156.64.0/21	Marsh Inc.	2,048
205.156.88.0/21	Marsh Inc.	2,048
205.156.104.0/21	Marsh Inc.	2,048
205.156.136.0/21	Marsh Inc.	2,048
205.156.144.0/21	Marsh Inc.	2,048
167.245.8.0/22	Marsh Inc.	1,024
167.245.12.0/22	Marsh Inc.	1,024
167.245.16.0/22	Marsh Inc.	1,024
167.245.20.0/22	Marsh Inc.	1,024
167.245.24.0/22	Marsh Inc.	1,024
167.245.28.0/22	Marsh Inc.	1,024
167.245.32.0/22	Marsh Inc.	1,024
167.245.36.0/22	Marsh Inc.	1,024
167.245.40.0/22	Marsh Inc.	1,024
167.245.104.0/22	Marsh Inc.	1,024
205.156.64.0/22	Marsh Inc.	1,024
205.156.68.0/22	Marsh Inc.	1,024
205.156.96.0/22	Marsh Inc.	1,024
205.156.104.0/22	Marsh Inc.	1,024
205.156.108.0/22	Marsh Inc.	1,024
205.156.112.0/22	Marsh Inc.	1,024
205.156.128.0/22	Marsh Inc.	1,024
205.156.152.0/22	Marsh Inc.	1,024
167.245.108.0/23	Marsh Inc.	512
205.156.100.0/23	Marsh Inc.	512
205.156.102.0/23	Marsh Inc.	512
205.156.132.0/23	Marsh Inc.	512
205.156.160.0/23	Marsh Inc.	512
167.245.3.0/24	Marsh Inc.	256
167.245.159.0/24	Marsh Inc.	256
168.168.150.0/24	Marsh & McLennan Companies, Inc.	256
168.168.200.0/24	Marsh & McLennan Companies, Inc.	256
205.156.72.0/24	Marsh Inc.	256
205.156.84.0/24	Marsh Inc.	256
205.156.117.0/24	Marsh Inc.	256
205.156.134.0/24	Marsh Inc.	256
205.156.135.0/24	Marsh Inc.	256
205.156.164.0/24	Marsh Inc.	256

There are no known IPv6 addresses belonging to this network

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WHOIS Details

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                                                ASHandle:       AS17161
                                                OrgID:          AS17161
                                                ASName:         AS17161
                                                ASNumber:       AS17161
                                                RegDate:        0000-00-00
                                                Updated:        0000-00-00
                                                TechHandle:     AA00-AAAA
                                                Source:         AAAA

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Hosted Domains

There are 844 domain names hosted across 187 IP addresses on this ASN.

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IP Address	Domain	Domains on this IP
205.156.140.51	██████████	238
205.156.141.241	██████████	123
205.156.141.126	██████████	72
167.245.162.16	██████████	68
167.245.162.31	██████████	35
167.245.104.68	██████████	28
167.245.104.49	██████████	12
167.245.104.71	██████████	12
205.156.141.25	██████████	10
167.245.104.76	██████████	9

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Peers

There are 5 peers for this ASN.

Peers	Name
AS15830	Equinix (EMEA) Acquisition Enterprises B.V.
AS3356	Level 3 Parent, LLC
AS4826	Vocus Connect International Backbone
AS701	Verizon Business
AS7474	SingTel Optus Pty Ltd

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Upstreams

There are 5 upstreams for this ASN.

upstreams	Name
AS15830	Equinix (EMEA) Acquisition Enterprises B.V.
AS3356	Level 3 Parent, LLC
AS4826	Vocus Connect International Backbone
AS701	Verizon Business
AS7474	SingTel Optus Pty Ltd

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Downstreams

There are no downstreams for this ASN.

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Pingable IPs

8 IPs in this ASN replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
205.156.136.2	AS17161 Marsh Inc.	`2.02ms` from Dallas, US
205.156.88.100	AS17161 Marsh Inc.	`0.82ms` from Melbourne, AU
205.156.64.252	AS17161 Marsh Inc.	`1.12ms` from Sydney, AU
205.156.137.100	AS17161 Marsh Inc.	`1.99ms` from Dallas, US
167.245.191.252	AS17161 Marsh Inc.	`0.39ms` from Ashburn, US
167.245.3.253	AS17161 Marsh Inc.	`1.47ms` from Ashburn, US
205.156.152.47	AS17161 Marsh Inc.	`2.76ms` from Dallas, US
205.156.89.13	AS17161 Marsh Inc.	`1.47ms` from Melbourne, AU

Other Pingable IPs

Below is a random selection of 25 IPs that replied to an ICMP ping during our most recent internet scan.

IP Address	ASN	Details
100.36.102.153	AS701 Verizon Business	`2.01ms` from Ashburn, US
186.154.126.185	AS19429 ETB - Colombia	`1.19ms` from Bogota, CO
99.9.128.185	AS7018 AT&T Enterprises, LLC	`2.60ms` from Dallas, US
62.138.217.249	AS61157 PlusServer GmbH	`1.19ms` from Duesseldorf, DE
8.155.5.73	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	`0.47ms` from Heyuan, CN
67.200.181.153	AS25956 Logix	`1.88ms` from Houston, US
58.120.251.57	AS9318 SK Broadband Co Ltd	`1.15ms` from Incheon, KR
36.147.53.25	AS9808 China Mobile Communications Group Co., Ltd.	`2.10ms` from Kunming, CN
81.38.165.57	AS3352 TELEFONICA DE ESPANA S.A.U.	`9.64ms` from Madrid, ES
13.202.215.41	AS16509 Amazon.com, Inc.	`0.15ms` from Mumbai, IN
24.129.155.153	AS33363 Charter Communications, Inc	`10.70ms` from Orlando, US
78.195.18.185	AS12322 Free SAS	`1.36ms` from Paris, FR
54.235.142.185	AS14618 Amazon.com, Inc.	`0.23ms` from Reston, US
59.5.170.217	AS4766 Korea Telecom	`1.43ms` from Seoul, KR
1.104.16.105	AS4766 Korea Telecom	`3.25ms` from Seoul, KR
39.190.93.89	AS56041 China Mobile communications corporation	`7.24ms` from Shanghai, CN
126.206.68.121	AS17676 SoftBank Corp.	`3.55ms` from Tokyo, JP
118.158.121.9	AS2516 KDDI CORPORATION	`7.84ms` from Tokyo, JP
212.103.67.9	AS15576 NTS workspace AG	`0.51ms` from Zuerich, CH
188.200.52.41	AS1136 KPN B.V.	`2.81ms` from Amsterdam, NL
208.46.123.89	AS209 CenturyLink Communications, LLC	`4.06ms` from Ashburn, US
43.140.202.121	AS45090 Shenzhen Tencent Computer Systems Company Limited	`1.98ms` from Beijing, CN
85.214.191.201	AS6724 Strato GmbH	`0.53ms` from Berlin, DE
141.39.171.25	AS680 Verein zur Foerderung eines Deutschen Forschungsnetzes e.V.	`8.83ms` from Frankfurt am Main, DE
122.156.90.153	AS4837 CHINA UNICOM China169 Backbone	`9.36ms` from Harbin, CN

Traceroute

Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this ASN. Learn more.

traceroute -a -n -q1 -f2 -m14 205.156.90.33

traceroute to 205.156.90.33 (205.156.90.33): 14 hops max, 52 byte packets

2 [AS3356] 4.69.219.65 32.015 ms

3 [AS3356] 4.16.45.170 190.823 ms

4 *

5 [AS4826] 114.31.192.55 202.496 ms

6 *

7 *

8 *

9 [AS4826] 114.31.196.69 204.554 ms

10 [AS4826] 49.255.77.85 203.366 ms

11 [AS17161] 205.156.88.35 203.406 ms

12 *

13 *

14 *

Measurement taken from

IPinfo ProbeNet in Casper, US

On January 19th 2026

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What is an ASN?

Autonomous System Numbers (ASNs) are assigned to entities such as Internet Service Providers and other large organizations that control blocks of IP addresses. This network page, and the organization field that's shown on the main IP address information page and also returned in the geolocation API are based on the ASN.

The ASN details will often correspond to the IP address owner, but for smaller organizations it may be that organization's parent, or their ISP. Find out more about AS17161 at robtex.

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