Autonomous System details

AS19977

Mayer Brown LLP  ·  mayerbrown.com

United States

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AS19977 – Mayer Brown LLP

Field Value
Country United States
Website mayerbrown.com
Hosted domains 6
IPv4 addresses 2,048
IPv6 addresses 0
ASN type Business
Registry arin
Allocated 10 years ago on Aug 02, 2016
Updated 10 years ago on Aug 02, 2016

IP Ranges

Netblock Company Num of IPs
143.58.0.0/22 Mayer Brown LLP 1,024
143.58.4.0/22 Mayer Brown LLP 1,024
143.58.0.0/24 Mayer Brown LLP 256
143.58.1.0/24 Mayer Brown LLP 256
143.58.2.0/24 Mayer Brown LLP 256
143.58.3.0/24 Mayer Brown LLP 256
143.58.4.0/24 Mayer Brown LLP 256
143.58.5.0/24 Mayer Brown LLP 256
143.58.6.0/24 Mayer Brown LLP 256
143.58.7.0/24 Mayer Brown LLP 256

There are no known IPv6 addresses belonging to this network

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WHOIS Details

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                                                ASHandle:       AS19977
                                                OrgID:          AS19977
                                                ASName:         AS19977
                                                ASNumber:       AS19977
                                                RegDate:        0000-00-00
                                                Updated:        0000-00-00
                                                TechHandle:     AA00-AAAA
                                                Source:         AAAA
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Hosted Domains

There are 6 domain names hosted across 6 IP addresses on this ASN.

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IP Address Domain Domains on this IP
143.58.5.109 ██████████ 1
143.58.1.250 ██████████ 1
143.58.1.247 ██████████ 1
143.58.4.81 ██████████ 1
143.58.1.248 ██████████ 1
143.58.1.249 ██████████ 1

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Peers

There are 3 peers for this ASN.

Peers Name
AS1239 Cogent Communications, LLC
AS174 Cogent Communications, LLC
AS3356 Level 3 Parent, LLC
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Upstreams

There are 2 upstreams for this ASN.

upstreams Name
AS174 Cogent Communications, LLC
AS3356 Level 3 Parent, LLC
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Downstreams

There are no downstreams for this ASN.

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Pingable IPs

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

IP Address ASN Details
143.58.7.19 AS19977 Mayer Brown LLP 1.02ms from Chicago, US
143.58.0.1 AS19977 Mayer Brown LLP 0.35ms from Chicago, US
143.58.4.1 AS19977 Mayer Brown LLP 0.61ms from Chicago, US
143.58.3.19 AS19977 Mayer Brown LLP 1.56ms from Chicago, US
143.58.1.73 AS19977 Mayer Brown LLP 0.70ms from Chicago, US
143.58.5.22 AS19977 Mayer Brown LLP 1.00ms from Chicago, US
143.58.2.1 AS19977 Mayer Brown LLP 0.94ms 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
92.70.111.169 AS1136 KPN B.V. 3.71ms from Amsterdam, NL
1.1.145.105 AS23969 TOT Public Company Limited 7.22ms from Bangkok, TH
98.103.10.41 AS10796 Charter Communications Inc 10.26ms from Cleveland, US
113.171.226.57 AS45899 VNPT Corp 0.58ms from Da Nang, VN
209.37.183.153 AS7018 AT&T Enterprises, LLC 9.12ms from Durham, US
183.238.163.153 AS9808 China Mobile Communications Group Co., Ltd. 4.13ms from Guangzhou, CN
72.176.219.25 AS11427 Charter Communications Inc 19.73ms from Houston, US
182.72.148.185 AS9498 BHARTI Airtel Ltd. 1.24ms from Hyderabad, IN
162.13.230.137 AS15395 Rackspace Ltd. 1.34ms from London, GB
79.152.189.57 AS3352 TELEFONICA DE ESPANA S.A.U. 9.51ms from Madrid, ES
173.31.156.57 AS30036 Mediacom Communications Corp 15.00ms from Minneapolis, US
103.232.126.121 AS133246 softnet network 4.80ms from Mumbai, IN
76.98.230.153 AS7922 Comcast Cable Communications, LLC 6.46ms from New York City, US
187.49.36.105 AS28140 G2G INTERNET E SERVICOS DE TELECOM LTDA 2.18ms from Osasco, BR
179.136.255.137 AS28573 Claro NXT Telecomunicacoes Ltda 15.12ms from Rio de Janeiro, BR
95.247.27.153 AS3269 Telecom Italia S.p.A. 7.68ms from Rome, IT
116.220.253.233 AS9824 JCOM Co., Ltd. 16.26ms from Tokyo, JP
52.232.40.153 AS8075 Microsoft Corporation 0.25ms from Amsterdam, NL
139.213.69.121 AS4837 CHINA UNICOM China169 Backbone 3.23ms from Changchun, CN
136.62.216.73 AS16591 Google Fiber Inc. 5.18ms from Dallas, US
34.251.254.73 AS16509 Amazon.com, Inc. 0.20ms from Dublin, IE
170.244.204.249 AS266509 - CONECTMAIS - 14.55ms from Fortaleza, BR
115.74.1.217 AS7552 Viettel Group 2.68ms from Ho Chi Minh City, VN
211.238.233.185 AS17573 SK Broadband Co Ltd 10.88ms from Incheon, KR
34.175.179.9 AS396982 Google LLC 0.09ms from Madrid, ES

Traceroute

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

$
traceroute -a -n -q1 -f5 143.58.5.56
traceroute to 143.58.5.56 (143.58.5.56): 64 hops max, 52 byte packets
5 [AS3356] 4.69.203.230 95.632 ms
6 [AS3356] 4.53.98.118 99.853 ms
7 *
8 *
9 *
10 [AS19977] 143.58.5.56 100.574 ms
Measurement taken from IPinfo ProbeNet in Edinburgh, GB
On

Related Networks

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 AS19977 at robtex.

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