143.58.0.0/22

AS19977 · Mayer Brown LLP

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Summary

Country	United States
Domain	mayerbrown.com
ASN	AS19977
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:      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


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

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 4 domain names hosted across 4 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP

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

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

IP Address	ASN	Details
143.58.3.19	AS19977 Mayer Brown LLP	`0.83ms` from Chicago, US
143.58.0.1	AS19977 Mayer Brown LLP	`0.36ms` from Chicago, US
143.58.1.22	AS19977 Mayer Brown LLP	`0.74ms` from Chicago, US
143.58.2.1	AS19977 Mayer Brown LLP	`1.07ms` from Chicago, US

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
97.81.18.22	AS20115 Charter Communications LLC	`6.39ms` from Atlanta, US
98.46.238.246	AS7922 Comcast Cable Communications, LLC	`5.29ms` from Chicago, US
172.214.184.38	AS8075 Microsoft Corporation	`0.20ms` from Chicago, US
139.39.94.6	AS5972 United States Department of Defense (DoD)	`7.91ms` from Frankfurt am Main, DE
138.73.51.6	AS611 NB-PEI Educational Computer Network	`0.44ms` from Fredericton, CA
123.24.49.22	AS45899 VNPT Corp	`1.34ms` from Hanoi, VN
70.138.249.166	AS7018 AT&T Enterprises, LLC	`19.30ms` from Houston, US
73.24.247.134	AS7922 Comcast Cable Communications, LLC	`15.76ms` from Los Angeles, US
2.141.109.86	AS3352 TELEFONICA DE ESPANA S.A.U.	`16.01ms` from Madrid, ES
90.52.100.86	AS3215 Orange S.A.	`5.64ms` from Marseille, FR
71.86.174.22	AS20115 Charter Communications LLC	`19.83ms` from Minneapolis, US
108.188.50.102	AS33363 Charter Communications, Inc	`10.64ms` from Orlando, US
90.183.40.230	AS5610 O2 Czech Republic, a.s.	`0.87ms` from Prague, CZ
115.136.196.86	AS17858 LG POWERCOMM	`2.17ms` from Seoul, KR
101.95.110.102	AS4812 China Telecom (Group)	`2.64ms` from Shanghai, CN
37.152.134.230	AS57970 OLE COMUNICACION S.L.	`4.81ms` from Valencia, ES
3.228.74.198	AS14618 Amazon.com, Inc.	`0.42ms` from Ashburn, US
47.252.112.102	AS45102 Alibaba (US) Technology Co., Ltd.	`0.29ms` from Ashburn, US
199.250.207.22	AS54641 InMotion Hosting, Inc.	`0.28ms` from Ashburn, US
99.175.155.134	AS7018 AT&T Enterprises, LLC	`3.96ms` from Atlanta, US
196.119.233.230	AS36925 MEDITELECOM	`3.98ms` from Casablanca, MA
98.144.72.214	AS10796 Charter Communications Inc	`6.21ms` from Chicago, US
66.116.56.230	AS5742 Fidium	`3.88ms` from Chicago, US
42.121.39.86	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	`3.90ms` from Hangzhou, CN
195.89.207.182	AS1273 Vodafone Group PLC	`0.96ms` from London, GB

Traceroute

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

traceroute -a -n -q1 143.58.3.19

traceroute to 143.58.3.19 (143.58.3.19): 64 hops max, 52 byte packets

1 [AS136258] 172.245.234.1 0.614 ms

2 *

3 [AS174] 154.24.13.222 0.951 ms

4 [AS174] 38.32.39.218 0.392 ms

5 [AS19977] 143.58.0.6 0.723 ms

6 [AS19977] 143.58.2.3 1.037 ms

7 [AS19977] 143.58.3.1 0.921 ms

8 [AS19977] 143.58.3.19 0.547 ms

Measurement taken from

IPinfo ProbeNet in Chicago, US

On March 13th 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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