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

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
143.58.1.250	immunoinnovation.com	1
143.58.1.248	insidecyberlaw.com	1
143.58.1.249	taxequitytimes.com	1
143.58.1.247	securitization.net	1

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

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Pingable IPs

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

IP Address	ASN	Details
143.58.1.199	AS19977 Mayer Brown LLP	`2.13ms` from Chicago, US
143.58.0.129	AS19977 Mayer Brown LLP	`1.61ms` from Chicago, US
143.58.2.1	AS19977 Mayer Brown LLP	`2.28ms` 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
178.228.141.246	AS31615 Odido Netherlands B.V.	`7.51ms` from Amsterdam, NL
177.42.90.214	AS18881 TELEFÔNICA BRASIL S.A	`3.40ms` from Belo Horizonte, BR
134.245.77.22	AS680 Verein zur Foerderung eines Deutschen Forschungsnetzes e.V.	`6.91ms` from Berlin, DE
139.202.6.166	AS4134 CHINANET-BACKBONE	`10.01ms` from Chengdu, CN
172.232.29.70	AS63949 Akamai Connected Cloud	`0.31ms` from Chicago, US
20.165.254.214	AS8075 Microsoft Corporation	`3.17ms` from Denver, US
52.17.170.134	AS16509 Amazon.com, Inc.	`0.15ms` from Dublin, IE
67.188.229.134	AS7922 Comcast Cable Communications, LLC	`5.44ms` from Fremont, US
151.80.1.246	AS16276 OVH SAS	`0.10ms` from Gravelines, FR
172.80.35.6	AS22552 eSited Solutions	`0.33ms` from Los Angeles, US
107.222.163.166	AS7018 AT&T Enterprises, LLC	`3.28ms` from Los Angeles, US
90.74.249.150	AS12479 Orange Espagne SA	`6.44ms` from Madrid, ES
79.24.195.150	AS3269 Telecom Italia S.p.A.	`6.06ms` from Milan, IT
126.80.120.182	AS17676 SoftBank Corp.	`2.48ms` from Osaka, JP
50.212.111.150	AS7922 Comcast Cable Communications, LLC	`8.16ms` from Providence, US
186.21.252.54	AS6535 Telmex Servicios Empresariales S.A.	`2.10ms` from Santiago, CL
211.37.21.214	AS9318 SK Broadband Co Ltd	`6.53ms` from Seoul, KR
58.40.11.214	AS4812 China Telecom (Group)	`2.85ms` from Shanghai, CN
111.240.13.54	AS3462 Data Communication Business Group	`1.74ms` from Taipei, TW
110.183.102.38	AS4134 CHINANET-BACKBONE	`5.34ms` from Taiyuan, CN
126.73.193.246	AS17676 SoftBank Corp.	`5.60ms` from Tokyo, JP
206.162.37.198	AS8047 GENERAL COMMUNICATION, INC.	`7.98ms` from Anchorage, US
140.208.200.70	AS3477 National Oceanic and Atmospheric Administration	`14.58ms` from Ashburn, US
103.253.74.198	AS56309 Siamdata Communication Co.,Ltd.	`0.49ms` from Bangkok, TH
176.240.95.22	AS47524 Turksat Uydu Haberlesme ve Kablo TV Isletme A.S.	`2.63ms` from Bursa, TR

Traceroute

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

traceroute -a -n -q1 -f2 143.58.1.249

traceroute to 143.58.1.249 (143.58.1.249): 64 hops max, 52 byte packets

2 [] 84.17.33.92 0.217 ms

3 [AS174] 38.104.106.25 1.31 ms

4 [AS174] 154.54.82.201 1.489 ms

5 [AS174] 154.54.166.182 0.896 ms

6 [AS174] 154.24.17.174 2.661 ms

7 [AS174] 38.32.39.218 1.541 ms

8 *

9 *

10 *

11 [AS19977] 143.58.1.249 2.2 ms

Measurement taken from

IPinfo ProbeNet in Chicago, US

On September 11th 2025

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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