Autonomous System details

AS19957

AT&T Enterprises, LLC  ·  att.com

United States

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AS19957 – AT&T Enterprises, LLC

Field Value
Country United States
Website att.com
Hosted domains 32
IPv4 addresses 399,360
IPv6 addresses 0
ASN type ISP
Registry arin
Allocated 23 years ago on Mar 05, 2003
Updated a year ago on Feb 12, 2025

IP Ranges

Netblock Company Num of IPs
66.4.0.0/16 State of Tennessee Department of Education 65,536
170.142.0.0/16 State of Tennessee 65,536
170.143.0.0/16 State of Tennessee 65,536
198.146.0.0/16 Tennessee Board of Regents 65,536
206.23.0.0/16 Tennessee Board of Regents 65,536
208.182.0.0/16 State of Tennessee Department of Education 65,536
208.63.128.0/20 STATE OF TENNESSEE-NETTN 4,096
66.4.28.0/22 State of Tennessee Department of Education 1,024
66.4.8.0/23 State of Tennessee Department of Education 512
66.4.14.0/23 State of Tennessee Department of Education 512
66.4.16.0/23 State of Tennessee Department of Education 512
66.4.18.0/23 State of Tennessee Department of Education 512
66.4.32.0/23 State of Tennessee Department of Education 512
66.4.60.0/23 State of Tennessee Department of Education 512
170.141.56.0/23 State of Tennessee 512
170.141.60.0/23 State of Tennessee 512
66.4.9.0/24 State of Tennessee Department of Education 256
66.4.18.0/24 State of Tennessee Department of Education 256
66.4.19.0/24 State of Tennessee Department of Education 256
66.4.27.0/24 State of Tennessee Department of Education 256
66.4.38.0/24 State of Tennessee Department of Education 256
66.4.40.0/24 State of Tennessee Department of Education 256
66.4.78.0/24 State of Tennessee Department of Education 256
66.4.81.0/24 State of Tennessee Department of Education 256
66.4.124.0/24 State of Tennessee Department of Education 256
66.4.126.0/24 State of Tennessee Department of Education 256
70.150.21.0/24 STATE OF TENNESSEE-NETTN 256
70.150.247.0/24 STATE OF TENNESSEE-NETTN 256
72.158.184.0/24 STATE OF TENNESSEE-NETTN 256
72.159.76.0/24 STATE OF TENNESSEE-NETTN 256
208.63.128.0/24 STATE OF TENNESSEE-NETTN 256
208.63.129.0/24 STATE OF TENNESSEE-NETTN 256
208.182.101.0/24 State of Tennessee Department of Education 256
208.182.124.0/24 State of Tennessee Department of Education 256

There are no known IPv6 addresses belonging to this network

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WHOIS Details

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                                                ASHandle:       AS19957
                                                OrgID:          AS19957
                                                ASName:         AS19957
                                                ASNumber:       AS19957
                                                RegDate:        0000-00-00
                                                Updated:        0000-00-00
                                                TechHandle:     AA00-AAAA
                                                Source:         AAAA
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Hosted Domains

There are 32 domain names hosted across 18 IP addresses on this ASN.

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IP Address Domain Domains on this IP
198.146.12.65 ██████████ 7
206.23.142.18 ██████████ 4
198.146.195.20 ██████████ 3
198.146.209.20 ██████████ 3
198.146.192.10 █████████ 2
198.146.104.18 ██████████ 2
66.4.75.250 ██████████ 1
66.4.27.10 ██████████ 1
66.4.189.2 ██████████ 1
198.146.195.10 ██████████ 1

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Peers

There are 3 peers for this ASN.

Peers Name
AS16473 AT&T Enterprises, LLC
AS16989 The University of Tennessee Health Science Center
AS7018 AT&T Enterprises, LLC
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Upstreams

There is 1 peer for this ASN.

upstreams Name
AS7018 AT&T Enterprises, LLC
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Downstreams

There is 1 peer for this ASN.

Downstreams Name
AS16989 The University of Tennessee Health Science Center
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ASN API & Database

Pingable IPs

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

IP Address ASN Details
66.4.18.141 AS19957 AT&T Enterprises, LLC 8.10ms from Atlanta, US
66.4.9.26 AS19957 AT&T Enterprises, LLC 7.17ms from Atlanta, US
206.23.59.1 AS19957 AT&T Enterprises, LLC 9.43ms from Atlanta, US
198.146.161.14 AS19957 AT&T Enterprises, LLC 8.23ms from Atlanta, US
206.23.6.204 AS19957 AT&T Enterprises, LLC 15.81ms from Atlanta, US
66.4.8.6 AS19957 AT&T Enterprises, LLC 7.17ms from Atlanta, US
198.146.127.187 AS19957 AT&T Enterprises, LLC 10.14ms from Atlanta, US
66.4.31.1 AS19957 AT&T Enterprises, LLC 7.56ms from Atlanta, US
208.182.124.15 AS19957 AT&T Enterprises, LLC 11.24ms from Atlanta, US
198.146.120.250 AS19957 AT&T Enterprises, LLC 9.82ms from Atlanta, US
198.146.198.65 AS19957 AT&T Enterprises, LLC 12.04ms from Atlanta, US
72.159.76.12 AS19957 AT&T Enterprises, LLC 11.33ms from Atlanta, US
72.158.184.12 AS19957 AT&T Enterprises, LLC 6.33ms from Atlanta, US
198.146.74.36 AS19957 AT&T Enterprises, LLC 8.24ms from Atlanta, US
198.146.64.255 AS19957 AT&T Enterprises, LLC 7.51ms from Atlanta, US
198.146.69.99 AS19957 AT&T Enterprises, LLC 8.11ms from Atlanta, US
66.4.60.1 AS19957 AT&T Enterprises, LLC 20.23ms from Atlanta, US
198.146.209.81 AS19957 AT&T Enterprises, LLC 15.93ms from Atlanta, US
198.146.106.101 AS19957 AT&T Enterprises, LLC 10.97ms from Atlanta, US
198.146.107.113 AS19957 AT&T Enterprises, LLC 10.12ms from Atlanta, US
198.146.105.1 AS19957 AT&T Enterprises, LLC 10.74ms from Atlanta, US
198.146.82.15 AS19957 AT&T Enterprises, LLC 9.71ms from Atlanta, US
198.146.104.62 AS19957 AT&T Enterprises, LLC 9.57ms from Atlanta, US
198.146.163.1 AS19957 AT&T Enterprises, LLC 7.78ms from Atlanta, US
198.146.87.17 AS19957 AT&T Enterprises, LLC 7.10ms from Atlanta, 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
81.206.136.229 AS1136 KPN B.V. 2.85ms from Amsterdam, NL
69.194.31.133 AS25853 Ellijay Telephone Company 2.60ms from Atlanta, US
43.140.213.101 AS45090 Shenzhen Tencent Computer Systems Company Limited 2.00ms from Beijing, CN
139.140.85.133 AS22847 Bowdoin College 5.39ms from Boston, US
157.20.180.245 AS151719 TACT COMMUNICATION PVT LTD 0.59ms from Chennai, IN
24.142.158.213 AS10796 Charter Communications Inc 1.17ms from Cleveland, US
52.231.140.69 AS8075 Microsoft Corporation 0.15ms from Dongnae, KR
185.185.237.165 AS206466 Palexpo SA 0.69ms from Geneve, CH
1.62.232.117 AS4837 CHINA UNICOM China169 Backbone 2.86ms from Harbin, CN
89.181.61.101 AS2860 NOS COMUNICACOES, S.A. 9.57ms from Lisbon, PT
217.35.79.101 AS2856 British Telecommunications PLC 1.97ms from London, GB
165.236.245.101 AS14265 TPx Communications 0.62ms from Los Angeles, US
83.41.250.53 AS3352 TELEFONICA DE ESPANA S.A.U. 8.40ms from Madrid, ES
101.181.74.181 AS1221 Telstra Limited 3.87ms from Melbourne, AU
177.200.99.181 AS28306 Voluy Telecom Eireli 3.77ms from Osasco, BR
112.243.25.117 AS4837 CHINA UNICOM China169 Backbone 2.96ms from Qingdao, CN
75.221.98.213 AS6167 Verizon Business 10.98ms from Santa Clara, US
119.18.84.101 AS9770 LG HelloVision Corp. 10.31ms from Seoul, KR
203.249.104.21 AS9978 The University of Seoul 3.02ms from Seoul, KR
23.38.131.85 AS16625 Akamai Technologies, Inc. 0.08ms from Sydney, AU
82.79.198.213 AS8708 DIGI ROMANIA S.A. 3.25ms from Timisoara, RO
60.127.15.85 AS17676 SoftBank Corp. 2.97ms from Tokyo, JP
195.136.156.5 AS205608 SERVIRE Adam Kozlowski 6.49ms from Warsaw, PL
136.61.42.133 AS16591 Google Fiber Inc. 7.04ms from Ashburn, US
49.49.59.5 AS45758 Triple T Broadband Public Company Limited 8.78ms from Bangkok, TH

Traceroute

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

$
traceroute -a -n -q1 -f2 -m6 206.23.86.135
traceroute to 206.23.86.135 (206.23.86.135): 6 hops max, 52 byte packets
2 [AS3257] 154.14.160.13 1.307 ms
4 *
5 *
6 *
Measurement taken from IPinfo ProbeNet in Amsterdam, NL
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 AS19957 at robtex.

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