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
66.120.0.0/13 AS7018 AT&T Enterprises, LLC 524,288
66.136.0.0/13 AS16788 AT&T Enterprises, LLC 524,288
66.136.0.0/13 AS7018 AT&T Enterprises, LLC 524,288
66.192.0.0/14 AS35863 Level 3 Parent, LLC 262,144
66.104.0.0/14 AS2828 Verizon Business 262,144
66.192.0.0/14 AS30258 Level 3 Parent, LLC 262,144
66.192.0.0/14 AS394750 Level 3 Parent, LLC 262,144
66.192.0.0/14 AS11402 Level 3 Parent, LLC 262,144
66.12.0.0/14 AS701 Verizon Business 262,144
66.192.0.0/14 AS29707 Level 3 Parent, LLC 262,144
66.192.0.0/14 AS33745 Level 3 Parent, LLC 262,144
66.192.0.0/14 AS3549 Level 3 Parent, LLC 262,144
66.192.0.0/14 AS29921 Level 3 Parent, LLC 262,144
66.192.0.0/14 AS394171 Level 3 Parent, LLC 262,144
66.236.0.0/14 AS2828 Verizon Business 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 AS13755 Level 3 Parent, LLC 262,144
66.192.0.0/14 AS3356 Level 3 Parent, LLC 262,144
66.192.0.0/14 AS400057 Level 3 Parent, LLC 262,144
66.192.0.0/14 AS32617 Level 3 Parent, LLC 262,144
66.192.0.0/14 AS13628 Level 3 Parent, LLC 262,144
66.236.0.0/14 AS29819 Verizon Business 262,144
66.192.0.0/14 AS23314 Level 3 Parent, LLC 262,144
66.192.0.0/14 AS29985 Level 3 Parent, LLC 262,144
66.192.0.0/14 AS14467 Level 3 Parent, LLC 262,144
66.192.0.0/14 AS62478 Level 3 Parent, LLC 262,144
66.192.0.0/14 AS395837 Level 3 Parent, LLC 262,144
66.192.0.0/14 AS18929 Level 3 Parent, LLC 262,144
66.144.0.0/15 AS19902 Department of Administrative Services 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
66.100.0.0/15 AS3561 CenturyLink Communications, LLC 131,072
66.176.0.0/15 AS7922 Comcast Cable Communications, LLC 131,072
66.30.0.0/15 AS7922 Comcast Cable Communications, LLC 131,072
66.92.0.0/15 AS11696 GTT Americas, LLC 131,072
66.74.0.0/15 AS20001 Charter Communications Inc 131,072
66.100.0.0/15 AS46854 CenturyLink Communications, LLC 131,072
66.92.0.0/15 AS3257 GTT Americas, LLC 131,072
66.166.0.0/15 AS3257 GTT Americas, LLC 131,072
66.130.0.0/15 AS5769 Videotron Ltee 131,072
66.2.0.0/15 AS2828 Verizon Business 131,072
66.88.0.0/15 AS2828 Verizon Business 131,072
66.74.0.0/15 AS7224 Charter Communications Inc 131,072
66.72.0.0/15 AS7018 AT&T Enterprises, LLC 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-gamers.net 2
66.20.236.102 themedicalhealthnetwork.biz 1
66.21.46.54 teddasher.com 1
66.21.66.75 rssrspr.com 1
66.21.56.86 instantaccessnc.com 1
66.20.173.153 desertedgegroup.com 1
66.20.20.30 ctnmedia.com 1
66.21.56.71 nc123.com 1
66.20.43.50 decu.org 1
66.21.74.69 palmbeats.com 1
66.20.168.67 chefchaouen.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
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
66.21.120.130 AS6389 AT&T Enterprises, LLC 11.58ms from Atlanta, US
66.21.122.105 AS6389 AT&T Enterprises, LLC 2.65ms from Chicago, US
66.21.26.6 AS6389 AT&T Enterprises, LLC 1.66ms from Atlanta, US
66.20.45.20 AS23199 Comdata,INC 3.19ms from Murfreesboro, US
66.21.42.2 AS32467 SFA Holdings Inc. 2.73ms from New York City, US
66.20.213.162 AS29902 Complete Computers 26.59ms from Atlanta, US
66.21.19.193 AS6389 AT&T Enterprises, LLC 5.38ms from Miami, US
66.20.24.65 AS6389 AT&T Enterprises, LLC 1.91ms from Atlanta, US
66.21.18.121 AS6389 AT&T Enterprises, LLC 5.75ms from Miami, US
66.20.212.1 AS29902 Complete Computers 16.92ms from Atlanta, US
66.21.95.31 AS6389 AT&T Enterprises, LLC 2.63ms from Chicago, US
66.21.94.98 AS6389 AT&T Enterprises, LLC 12.07ms from Atlanta, US
66.21.66.193 AS6389 AT&T Enterprises, LLC 8.93ms from Miami, US
66.20.19.106 AS6389 AT&T Enterprises, LLC 5.40ms from Miami, US
66.21.112.255 AS6389 AT&T Enterprises, LLC 3.08ms from Chicago, US
66.21.47.163 AS6389 AT&T Enterprises, LLC 4.71ms from Atlanta, US
66.20.193.65 AS6389 AT&T Enterprises, LLC 4.36ms from Atlanta, US
66.20.36.65 AS6389 AT&T Enterprises, LLC 6.64ms from Atlanta, US
66.21.114.98 AS6389 AT&T Enterprises, LLC 23.45ms from Atlanta, US
66.21.49.145 AS6389 AT&T Enterprises, LLC 6.62ms from Atlanta, US
66.21.93.191 AS6389 AT&T Enterprises, LLC 2.57ms from Chicago, US
66.20.56.129 AS6389 AT&T Enterprises, LLC 7.93ms from Dallas, US
66.20.248.254 AS63238 Upchurch Telecom & Data, Inc. 8.44ms from New Orleans, US
66.21.115.1 AS6389 AT&T Enterprises, LLC 15.26ms from Atlanta, US
66.20.18.241 AS6389 AT&T Enterprises, LLC 5.37ms from Miami, 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
204.204.217.31 AS7421 Sprint 0.12ms from Ashburn, US
47.72.231.111 AS9500 One New Zealand Group Limited 1.03ms from Auckland, NZ
34.133.177.47 AS396982 Google LLC 0.13ms from Council Bluffs, US
20.234.28.79 AS8075 Microsoft Corporation 0.15ms from Dublin, IE
62.226.228.95 AS3320 Deutsche Telekom AG 3.23ms from Duesseldorf, DE
27.6.152.31 AS17488 Hathway IP Over Cable Internet 1.50ms from Hyderabad, IN
81.162.100.63 AS57093 Yalta-TV KOM Ltd. 12.50ms from Krasnodar, RU
86.140.239.191 AS2856 British Telecommunications PLC 2.11ms from London, GB
82.60.90.79 AS3269 Telecom Italia S.p.A. 2.40ms from Milan, IT
94.91.214.127 AS3269 Telecom Italia S.p.A. 0.67ms from Milan, IT
68.134.95.159 AS701 Verizon Business 3.71ms from Philadelphia, US
12.13.150.31 AS7018 AT&T Enterprises, LLC 3.45ms from San Jose, US
20.214.187.95 AS8075 Microsoft Corporation 0.19ms from Seoul, KR
4.239.175.223 AS8075 Microsoft Corporation 0.17ms from Toronto, CA
138.113.178.47 AS54994 Meteverse Limited. 0.18ms from Al Fujairah City, AE
188.207.56.95 AS1136 KPN B.V. 9.38ms from Amsterdam, NL
66.56.2.207 AS7922 Comcast Cable Communications, LLC 4.80ms from Atlanta, US
92.251.131.47 AS13280 Three Ireland (Hutchison) limited 13.66ms from Dublin, IE
23.102.24.207 AS8075 Microsoft Corporation 0.17ms from Dublin, IE
102.160.98.111 AS30999 EMTEL LIMITED 6.25ms from Ebene, MU
154.85.137.95 AS134548 DXTL Tseung Kwan O Service 0.75ms from Hong Kong, HK
124.94.124.79 AS4837 CHINA UNICOM China169 Backbone 11.86ms from Liaoyang, CN
178.44.74.15 AS12389 PJSC Rostelecom 15.89ms from Moscow, RU
148.75.93.15 AS6128 Cablevision Systems Corp. 8.48ms from New York City, US
179.213.141.63 AS28573 Claro NXT Telecomunicacoes Ltda 5.27ms from Osasco, BR

Traceroute

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

$
traceroute -a -n -q1 -f2 -m6 66.20.8.132
traceroute to 66.20.8.132 (66.20.8.132): 6 hops max, 52 byte packets
2 [AS3257] 92.60.249.225 0.269 ms
4 *
5 *
6 *
Measurement taken from IPinfo ProbeNet in Frankfurt am Main, DE
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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