155.166.80.0/20

AS20057 · AT&T Enterprises, LLC

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Summary

Country	United States
Domain	att.com
ASN	AS20057
Parent Range	155.166.0.0/16
Registry	ARIN
ID	ATT-MOBILITY-LLC-155-166-0-0

WHOIS Details

NetHandle:      NET-155-166-0-0-1
OrgID:          AEL-360
Parent:         NET-155-0-0-0-0
NetName:        ATT-MOBILITY-LLC-155-166-0-0
NetRange:       155.166.0.0 - 155.166.255.255
NetType:        allocation
RegDate:        1992-03-24
Updated:        2025-03-18
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:      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:      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:      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

Overlapping Ranges

BGP prefixes that contain 155.166.80.0/20

Range	ASN	Company	Num of IPs
155.166.0.0/16	AS20057	AT&T Enterprises, LLC	65,536

Nearby Ranges

BGP prefixes that overlap with 155.166.0.0/16

Range	ASN	Company	Num of IPs
155.166.0.0/16	AS20057	AT&T Enterprises, LLC	65,536

Hosted domains

There are no domains currently hosted on this ASN.

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

No IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

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
197.37.84.68	AS8452 TE-AS	`5.28ms` from Cairo, EG
197.146.109.244	AS36884 Wana Corporate	`13.78ms` from Casablanca, MA
50.246.216.4	AS7922 Comcast Cable Communications, LLC	`5.56ms` from Denver, US
13.32.105.116	AS16509 Amazon.com, Inc.	`0.30ms` from Frankfurt am Main, DE
79.232.13.212	AS3320 Deutsche Telekom AG	`7.17ms` from Frankfurt am Main, DE
171.236.185.164	AS7552 Viettel Group	`2.04ms` from Hanoi, VN
169.214.170.228	AS4766 Korea Telecom	`4.55ms` from Incheon, KR
72.199.182.148	AS22773 Cox Communications Inc.	`7.60ms` from Los Angeles, US
72.106.123.100	AS6167 Verizon Business	`12.15ms` from New York City, US
203.161.124.68	AS4826 Vocus Connect International Backbone	`0.46ms` from Perth, AU
20.163.122.36	AS8075 Microsoft Corporation	`0.15ms` from Phoenix, US
34.239.76.52	AS14618 Amazon.com, Inc.	`0.19ms` from Reston, US
176.212.94.244	AS57026 JSC "ER-Telecom Holding"	`7.46ms` from Samara, RU
24.217.130.180	AS20115 Charter Communications LLC	`5.19ms` from St. Louis, US
177.161.154.4	AS26599 TELEFÔNICA BRASIL S.A	`1.99ms` from São Paulo, BR
78.88.109.36	AS29314 VECTRA S.A.	`11.59ms` from Warsaw, PL
9.160.184.148	AS8075 Microsoft Corporation	`0.71ms` from Brussels, BE
116.5.129.196	AS4134 CHINANET-BACKBONE	`12.78ms` from Hong Kong, HK
88.248.195.100	AS9121 Turk Telekomunikasyon Anonim Sirketi	`9.51ms` from Izmir, TR
89.142.232.228	AS5603 Telekom Slovenije, d.d.	`1.70ms` from Ljubljana, SI
35.179.56.116	AS16509 Amazon.com, Inc.	`0.20ms` from London, GB
97.167.248.4	AS6167 Verizon Business	`7.45ms` from Los Angeles, US
191.19.252.4	AS26599 TELEFÔNICA BRASIL S.A	`1.72ms` from Osasco, BR
185.42.119.20	AS43424 SQUARK SARL	`0.63ms` from Paris, FR
44.193.46.228	AS14618 Amazon.com, Inc.	`0.18ms` from Reston, US

Traceroute

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

traceroute -a -n -q1 -f3 -m12 155.166.86.38

traceroute to 155.166.86.38 (155.166.86.38): 12 hops max, 52 byte packets

3 [AS3356] 4.69.217.206 96.315 ms

4 [AS3356] 4.68.62.226 95.087 ms

5 [AS7018] 32.130.89.14 94.84 ms

6 *

7 *

8 *

9 [AS20057] 166.170.17.85 95.905 ms

10 *

11 *

12 *

Measurement taken from

IPinfo ProbeNet in Edinburgh, GB

On January 30th 2026

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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