1. All IP Ranges
  2. 66.0.0.0/8
  3. AS6389  | 66.20.0.0/15

66.20.0.0/15

AS6389  ·  AT&T Enterprises, LLC

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Summary

Country United States
Domain att.com
ASN AS6389
Registry ARIN
ID BELLSNET-BLK8

WHOIS Details

NetHandle:      NET-66-20-0-0-1
OrgID:          AEL-360
Parent:         NET-66-0-0-0-0
NetName:        BELLSNET-BLK8
NetRange:       66.20.0.0 - 66.21.255.255
NetType:        allocation
RegDate:        2000-09-14
Updated:        2024-12-05
Source:         ARIN


OrgID:          AEL-360
OrgName:        AT&T Enterprises, LLC
CanAllocate:    
Street:         208 S. Akard St.
City:           Dallas
State/Prov:     TX
Country:        US
PostalCode:     75202
RegDate:        2024-11-22
Updated:        2025-10-29
OrgAdminHandle: ZS44-ARIN
OrgTechHandle:  ICC-ARIN
OrgTechHandle:  ZS44-ARIN
OrgAbuseHandle: ABUSE7-ARIN
OrgRoutingHandle:   ROUTI59-ARIN
Source:         ARIN


POCHandle:      ABUSE7-ARIN
IsRole:         Y
LastName:       abuse
FirstName:      
Street:         2701 W 15th ST
City:           Plano
State/Prov:     TX
Country:        US
PostalCode:     75075
RegDate:        2002-08-24
Updated:        2025-08-18
OfficePhone:    +1-919-319-8167
Mailbox:        [email protected]
Source:         ARIN


POCHandle:      ICC-ARIN
IsRole:         Y
LastName:       IP Team
FirstName:      
Street:         200 S. Laurel AVE
City:           MIDDLETOWN
State/Prov:     NJ
Country:        US
PostalCode:     07748
RegDate:        2002-09-24
Updated:        2025-08-18
OfficePhone:    +1-888-876-2382
Mailbox:        [email protected]
Source:         ARIN


POCHandle:      ZS44-ARIN
IsRole:         Y
LastName:       IPAdmin-ATT Internet Services
FirstName:      
Street:         7277 164th Ave NE
Street:         Attn: IP Management
City:           Redmond
State/Prov:     WA
Country:        US
PostalCode:     98052
RegDate:        2000-05-17
Updated:        2025-08-18
OfficePhone:    +1-888-510-5545
Mailbox:        [email protected]
Mailbox:        [email protected]
Source:         ARIN

Nearby Ranges

BGP prefixes that overlap with 66.0.0.0/8

Range ASN Company Num of IPs
66.120.0.0/13 AS22352 AT&T Enterprises, LLC 524,288
66.136.0.0/13 AS16788 AT&T Enterprises, LLC 524,288
66.120.0.0/13 AS7018 AT&T Enterprises, LLC 524,288
66.136.0.0/13 AS7018 AT&T Enterprises, LLC 524,288
66.12.0.0/14 AS701 Verizon Business 262,144
66.192.0.0/14 AS395837 Level 3 Parent, LLC 262,144
66.192.0.0/14 AS23314 Level 3 Parent, LLC 262,144
66.192.0.0/14 AS62478 Level 3 Parent, LLC 262,144
66.192.0.0/14 AS14467 Level 3 Parent, LLC 262,144
66.192.0.0/14 AS3356 Level 3 Parent, LLC 262,144
66.192.0.0/14 AS13628 Level 3 Parent, LLC 262,144
66.192.0.0/14 AS29921 Level 3 Parent, LLC 262,144
66.192.0.0/14 AS32617 Level 3 Parent, LLC 262,144
66.192.0.0/14 AS11402 Level 3 Parent, LLC 262,144
66.192.0.0/14 AS13755 Level 3 Parent, LLC 262,144
66.192.0.0/14 AS35863 Level 3 Parent, LLC 262,144
66.192.0.0/14 AS400057 Level 3 Parent, LLC 262,144
66.192.0.0/14 AS395760 Level 3 Parent, LLC 262,144
66.192.0.0/14 AS32268 Level 3 Parent, LLC 262,144
66.192.0.0/14 AS29707 Level 3 Parent, LLC 262,144
66.236.0.0/14 AS29819 Verizon Business 262,144
66.192.0.0/14 AS33745 Level 3 Parent, LLC 262,144
66.104.0.0/14 AS2828 Verizon Business 262,144
66.236.0.0/14 AS2828 Verizon Business 262,144
66.192.0.0/14 AS3549 Level 3 Parent, LLC 262,144
66.192.0.0/14 AS394171 Level 3 Parent, LLC 262,144
66.192.0.0/14 AS394750 Level 3 Parent, LLC 262,144
66.192.0.0/14 AS30258 Level 3 Parent, LLC 262,144
66.192.0.0/14 AS18929 Level 3 Parent, LLC 262,144
66.192.0.0/14 AS29985 Level 3 Parent, LLC 262,144
66.166.0.0/15 AS3257 GTT Americas, LLC 131,072
66.66.0.0/15 AS11351 Charter Communications Inc 131,072
66.68.0.0/15 AS11427 Charter Communications Inc 131,072
66.74.0.0/15 AS11427 Charter Communications Inc 131,072
66.88.0.0/15 AS2828 Verizon Business 131,072
66.100.0.0/15 AS46854 CenturyLink Communications, LLC 131,072
66.100.0.0/15 AS27328 CenturyLink Communications, LLC 131,072
66.2.0.0/15 AS2828 Verizon Business 131,072
66.92.0.0/15 AS11696 GTT Americas, LLC 131,072
66.72.0.0/15 AS7018 AT&T Enterprises, LLC 131,072
66.74.0.0/15 AS7224 Charter Communications Inc 131,072
66.130.0.0/15 AS5769 Videotron Ltee 131,072
66.100.0.0/15 AS3561 CenturyLink Communications, LLC 131,072
66.176.0.0/15 AS7922 Comcast Cable Communications, LLC 131,072
66.144.0.0/15 AS19902 Department of Administrative Services 131,072
66.74.0.0/15 AS20001 Charter Communications Inc 131,072

Hosted domains

There are 21 domain names hosted across 17 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address Domain Domains on this IP
66.20.19.54 dow-games.net 2
66.21.56.86 instantaccessnc.com 1
66.20.20.30 ctnmedia.com 1
66.20.43.50 decu.org 1
66.21.46.54 teddasher.com 1
66.21.74.69 palmbeats.com 1
66.20.173.153 desertedgegroup.com 1
66.21.56.71 nc123.com 1
66.21.66.75 rssrspr.com 1
66.20.168.67 chefchaouen.net 1
66.20.236.102 themedicalhealthnetwork.biz 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
Read more

Pingable IPs

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

IP Address ASN Details
66.21.123.36 AS6389 AT&T Enterprises, LLC 2.71ms from Chicago, US
66.21.95.63 AS6389 AT&T Enterprises, LLC 3.13ms from Chicago, US
66.21.49.145 AS6389 AT&T Enterprises, LLC 6.26ms from Atlanta, US
66.20.248.254 AS63238 Upchurch Telecom & Data, Inc. 8.42ms from New Orleans, US
66.21.243.125 AS6389 AT&T Enterprises, LLC 2.75ms from Chicago, US
66.21.93.31 AS6389 AT&T Enterprises, LLC 2.75ms from Chicago, US
66.21.122.109 AS6389 AT&T Enterprises, LLC 2.79ms from Chicago, US
66.20.45.20 AS23199 Comdata,INC 8.43ms from Atlanta, US
66.21.26.6 AS6389 AT&T Enterprises, LLC 1.23ms from Atlanta, US
66.21.114.97 AS6389 AT&T Enterprises, LLC 23.21ms from Atlanta, US
66.21.18.121 AS6389 AT&T Enterprises, LLC 5.43ms from Miami, US
66.20.204.97 AS6389 AT&T Enterprises, LLC 15.69ms from Miami, US
66.20.213.162 AS29902 Complete Computers 28.00ms from Atlanta, US
66.20.19.41 AS6389 AT&T Enterprises, LLC 5.41ms from Miami, US
66.21.42.1 AS32467 SFA Holdings Inc. 2.55ms from New York City, US
66.21.115.1 AS6389 AT&T Enterprises, LLC 15.31ms from Atlanta, US
66.20.36.65 AS6389 AT&T Enterprises, LLC 6.66ms from Atlanta, US
66.20.56.129 AS6389 AT&T Enterprises, LLC 7.90ms from Dallas, US
66.21.47.163 AS6389 AT&T Enterprises, LLC 4.70ms from Atlanta, US
66.20.24.65 AS6389 AT&T Enterprises, LLC 1.84ms from Atlanta, US
66.20.193.65 AS6389 AT&T Enterprises, LLC 4.37ms from Atlanta, US
66.21.66.197 AS6389 AT&T Enterprises, LLC 8.94ms from Miami, US
66.21.94.125 AS6389 AT&T Enterprises, LLC 11.96ms from Atlanta, US
66.21.120.129 AS6389 AT&T Enterprises, LLC 11.09ms from Atlanta, US
66.20.212.1 AS29902 Complete Computers 16.90ms 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
106.75.105.15 AS23724 IDC, China Telecommunications Corporation 2.46ms from Beijing, CN
34.79.173.15 AS396982 Google LLC 0.14ms from Brussels, BE
163.192.108.223 AS31898 Oracle Corporation 0.34ms from Chicago, US
141.193.82.95 AS53971 PD Fiber, LLC 14.80ms from Chicago, US
99.161.83.63 AS7018 AT&T Enterprises, LLC 8.19ms from Chicago, US
38.175.171.207 AS397142 City of Fort Collins 1.94ms from Denver, US
87.78.67.239 AS8422 NetCologne Gesellschaft fur Telekommunikation mbH 3.95ms from Duesseldorf, DE
3.126.186.191 AS16509 Amazon.com, Inc. 0.21ms from Frankfurt am Main, DE
106.55.68.207 AS45090 Shenzhen Tencent Computer Systems Company Limited 2.21ms from Guangzhou, CN
41.169.138.223 AS36937 Liquid Telecommunications South Africa (Pty) Ltd 1.72ms from Johannesburg, ZA
110.159.246.31 AS4788 TM TECHNOLOGY SERVICES SDN. BHD. 16.51ms from Kuala Lumpur, MY
217.155.207.47 AS13037 Zen Internet Ltd 1.65ms from London, GB
197.249.27.63 AS25139 TVCABO - Comunicacoes Multimedia, Lda 0.92ms from Maputo, MZ
13.203.75.175 AS16509 Amazon.com, Inc. 0.37ms from Mumbai, IN
222.93.156.255 AS4134 CHINANET-BACKBONE 4.55ms from Nanjing, CN
114.219.163.255 AS4134 CHINANET-BACKBONE 4.12ms from Nanjing, CN
187.116.138.95 AS26599 TELEFÔNICA BRASIL S.A 7.50ms from Rio de Janeiro, BR
23.91.67.95 AS46606 Unified Layer 1.97ms from Salt Lake City, US
201.241.48.111 AS22047 VTR BANDA ANCHA S.A. 1.65ms from Santiago, CL
125.176.158.207 AS17858 LG POWERCOMM 2.48ms from Seoul, KR
171.125.199.111 AS4837 CHINA UNICOM China169 Backbone 7.75ms from Taiyuan, CN
86.82.9.159 AS1136 KPN B.V. 1.48ms from Amsterdam, NL
89.210.86.191 AS3329 VODAFONE-PANAFON HELLENIC TELECOMMUNICATIONS COMPANY SA 1.07ms from Athens, GR
80.131.56.159 AS3320 Deutsche Telekom AG 1.82ms from Berlin, DE
115.98.96.47 AS17488 Hathway IP Over Cable Internet 1.34ms from Hyderabad, IN

Traceroute

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

$
traceroute -a -n -q1 -m6 66.20.74.181
traceroute to 66.20.74.181 (66.20.74.181): 6 hops max, 52 byte packets
1 [AS31898] 140.91.230.5 0.073 ms
4 *
5 *
6 *
Measurement taken from IPinfo ProbeNet in Chuncheon, KR
On

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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