143.58.8.0/22

AS29120 · Mayer Brown International LLP

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Summary

Country	United States
Domain	mayerbrown.com
ASN	AS29120
Registry	ARIN
ID	MBRM-NET

WHOIS Details

NetHandle:      NET-143-58-0-0-1
OrgID:          MBRML
Parent:         NET-143-0-0-0-0
NetName:        MBRM-NET
NetRange:       143.58.0.0 - 143.58.63.255
NetType:        allocation
RegDate:        1990-03-26
Updated:        2022-04-06
Source:         ARIN


OrgID:          MBRML
OrgName:        Mayer Brown LLP
CanAllocate:    
Street:         71 S. Wacker
City:           Chicago
State/Prov:     IL
Country:        US
PostalCode:     60606
RegDate:        2006-01-12
Updated:        2016-07-12
OrgAdminHandle: BARRA15-ARIN
OrgTechHandle:  MCS7-ARIN
OrgAbuseHandle: MCS7-ARIN
Source:         ARIN


POCHandle:      MCS7-ARIN
IsRole:         N
LastName:       Sherman
FirstName:      Michael
Street:         230 South LaSalle Street
City:           Chicago
State/Prov:     IL
Country:        US
PostalCode:     60604
RegDate:        2006-01-09
Updated:        2022-02-17
OfficePhone:    +1-312-701-8315
Mailbox:        msherman@mayerbrown.com
Source:         ARIN


POCHandle:      BARRA15-ARIN
IsRole:         N
LastName:       Barratt
FirstName:      Mark
Street:         311 W. Monroe
City:           Chicago
State/Prov:     IL
Country:        US
PostalCode:     60606
RegDate:        2013-12-03
Updated:        2025-07-16
OfficePhone:    +1-312-701-8836
Mailbox:        mbarratt@mayerbrown.com
Source:         ARIN

Nearby Ranges

BGP prefixes that overlap with 143.58.0.0/16

Range	ASN	Company	Num of IPs
143.58.64.0/18	AS8881	1&1 Versatel GmbH	16,384

Hosted domains

There are no domains currently hosted on this ASN.

Hosted domains API

Our Hosted Domains API, or Reverse IP API returns a full list of domains that are hosted on a single IP address.

Useful for Cybersecurity

Read more

Pingable IPs

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

IP Address	ASN	Details
143.58.8.1	AS29120 Mayer Brown International LLP	`1.43ms` from London, GB
143.58.9.201	AS29120 Mayer Brown International LLP	`2.24ms` from London, GB

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
139.144.214.54	AS63949 Akamai Connected Cloud	`0.26ms` from Ashburn, US
50.240.139.22	AS7922 Comcast Cable Communications, LLC	`6.56ms` from Chicago, US
91.57.245.118	AS3320 Deutsche Telekom AG	`4.21ms` from Duesseldorf, DE
93.236.185.102	AS3320 Deutsche Telekom AG	`7.04ms` from Frankfurt am Main, DE
188.163.179.246	AS15895 "Kyivstar" PJSC	`6.82ms` from Kyiv, UA
79.2.171.134	AS3269 Telecom Italia S.p.A.	`4.53ms` from Milan, IT
167.61.87.6	AS6057 Administracion Nacional de Telecomunicaciones	`1.80ms` from Montevideo, UY
24.129.108.70	AS7922 Comcast Cable Communications, LLC	`8.02ms` from Orlando, US
52.91.101.182	AS14618 Amazon.com, Inc.	`0.24ms` from Reston, US
23.195.232.166	AS16625 Akamai Technologies, Inc.	`0.29ms` from Seattle, US
43.203.120.230	AS16509 Amazon.com, Inc.	`0.14ms` from Seoul, KR
71.86.143.6	AS397019 Rocket Connect LLC	`10.24ms` from St. Louis, US
185.63.200.118	AS47329 WDM Sp. z o.o.	`6.13ms` from Warsaw, PL
185.234.213.134	AS57695 Misaka Network, Inc.	`0.01ms` from Zuerich, CH
40.67.138.166	AS8075 Microsoft Corporation	`0.46ms` from Boydton, US
76.30.119.86	AS7922 Comcast Cable Communications, LLC	`7.54ms` from Houston, US
218.50.176.102	AS9318 SK Broadband Co Ltd	`1.82ms` from Incheon, KR
175.33.232.166	AS4804 Microplex PTY LTD	`2.02ms` from Melbourne, AU
64.131.31.70	AS15250 Metronet	`0.48ms` from Minneapolis, US
68.52.25.86	AS7922 Comcast Cable Communications, LLC	`6.60ms` from Murfreesboro, US
71.242.89.214	AS701 Verizon Business	`1.34ms` from Philadelphia, US
184.103.183.246	AS209 CenturyLink Communications, LLC	`3.76ms` from Phoenix, US
96.76.201.118	AS7922 Comcast Cable Communications, LLC	`6.41ms` from Santa Clara, US
76.121.182.182	AS7922 Comcast Cable Communications, LLC	`6.28ms` from Seattle, US
220.77.161.38	AS4766 Korea Telecom	`6.12ms` from Seoul, KR

Traceroute

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

traceroute -a -n -q1 -f6 143.58.9.206

traceroute to 143.58.9.206 (143.58.9.206): 64 hops max, 52 byte packets

6 [AS16276] 213.186.32.252 0.742 ms

7 *

8 *

9 [AS3356] 171.75.8.197 0.78 ms

10 [AS3356] 212.133.113.130 1.615 ms

11 *

12 *

13 [AS29120] 143.58.9.206 2.325 ms

Measurement taken from

IPinfo ProbeNet in Erith, GB

On January 19th 2026

What are IP address ranges?

IP address ranges, or netblocks, are groups of related IP addresses. They are usually represented as a base IP address, followed by a slash, and then a netmask which represents how many IP addresses are contained within the netblock. This format is known as CIDR. You'll also sometimes see netblocks given as a start ip address, and an end ip address, or an ip address range.

Traffic works its way around the internet based on the routing table, which contains a list of networks and their associated netblocks.

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