204.178.8.0/21

AS6431 · AT&T Enterprises, LLC

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Summary

Country	United States
Domain	att.com
ASN	AS6431
Parent Range	204.176.0.0/14
Registry	ARIN
ID	UU-204-178-0-0

WHOIS Details

NetHandle:      NET-204-178-0-0-1
OrgID:          ATTLAB
Parent:         NET-204-176-0-0-1
NetName:        UU-204-178-0-0
NetRange:       204.178.0.0 - 204.178.15.255
NetType:        reassignment
RegDate:        1997-05-01
Updated:        2010-07-13
Source:         ARIN


OrgID:          ATTLAB
OrgName:        AT&T Laboratories
CanAllocate:    
Street:         200 S. Laurel Ave
Street:         D5-2B05
City:           Middletown
State/Prov:     NJ
Country:        US
PostalCode:     07748
RegDate:        1989-04-28
Updated:        2023-03-07
OrgAdminHandle: SYG-ARIN
OrgTechHandle:  SYG-ARIN
OrgAbuseHandle: SYG-ARIN
Source:         ARIN


POCHandle:      SYG-ARIN
IsRole:         N
LastName:       Gao
FirstName:      Steven
Street:         200 S. Laurel Avenue
City:           Middletown
State/Prov:     NJ
Country:        US
PostalCode:     07748
RegDate:        2008-07-15
Updated:        2024-08-27
OfficePhone:    +1-984-332-9149
MobilePhone:    +1-973-610-4452
Mailbox:        sg2468@att.com
Mailbox:        sgao777@outlook.com
Mailbox:        steveng@research.att.com
Source:         ARIN

Overlapping Ranges

BGP prefixes that contain 204.178.8.0/21

Range	ASN	Company	Num of IPs
204.176.0.0/14	AS13666	Verizon Business	262,144
204.176.0.0/14	AS15297	Verizon Business	262,144
204.176.0.0/14	AS32806	Verizon Business	262,144
204.176.0.0/14	AS701	Verizon Business	262,144

Nearby Ranges

BGP prefixes that overlap with 204.178.0.0/16

Range	ASN	Company	Num of IPs
204.176.0.0/14	AS13666	Verizon Business	262,144
204.176.0.0/14	AS15297	Verizon Business	262,144
204.176.0.0/14	AS32806	Verizon Business	262,144
204.176.0.0/14	AS701	Verizon Business	262,144
204.178.128.0/20	AS7118	Echo Communications Group, Inc.	4,096

Hosted domains

There are no domains currently hosted on this ASN.

Hosted domains API

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Useful for Cybersecurity

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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
20.15.8.133	AS8075 Microsoft Corporation	`0.17ms` from Boydton, US
89.33.96.53	AS35584 BMS IT GROUP SRL	`0.56ms` from Bucharest, RO
70.116.165.5	AS11427 Charter Communications Inc	`3.27ms` from Dallas, US
40.143.192.101	AS17378 TierPoint, LLC	`8.36ms` from Dallas, US
50.200.201.85	AS7922 Comcast Cable Communications, LLC	`1.01ms` from Dallas, US
73.181.120.37	AS7922 Comcast Cable Communications, LLC	`2.43ms` from Denver, US
5.178.70.133	AS50673 Serverius	`0.21ms` from Dronten, NL
177.19.145.5	AS18881 TELEFÔNICA BRASIL S.A	`0.39ms` from Fortaleza, BR
23.92.251.5	AS16276 OVH SAS	`0.57ms` from Hillsboro, US
178.78.12.213	AS34150 JSC "ER-Telecom Holding"	`1.27ms` from Krasnodar, RU
81.178.115.197	AS13285 TalkTalk Communications Limited	`5.08ms` from Manchester, GB
78.7.70.21	AS8968 BT Italia S.p.A.	`5.88ms` from Milan, IT
186.54.228.53	AS6057 Administracion Nacional de Telecomunicaciones	`1.53ms` from Montevideo, UY
83.237.111.165	AS8359 MTS PJSC	`1.57ms` from Moscow, RU
68.53.138.117	AS7922 Comcast Cable Communications, LLC	`6.29ms` from Murfreesboro, US
121.31.96.213	AS4837 CHINA UNICOM China169 Backbone	`11.45ms` from Nanning, CN
213.7.210.21	AS6866 Cyprus Telecommunications Authority	`1.43ms` from Nicosia, CY
191.123.235.197	AS26615 TIM S/A	`17.14ms` from Osasco, BR
37.100.34.245	AS1267 WIND TRE S.P.A.	`14.17ms` from Rende, IT
192.177.250.197	AS18779 EGIHosting	`0.16ms` from Santa Clara, US
96.53.52.85	AS6327 Shaw Communications Inc.	`3.81ms` from Seattle, US
43.201.142.165	AS16509 Amazon.com, Inc.	`0.13ms` from Seoul, KR
218.146.32.5	AS9684 HANWHA Corp. Information Service div.	`1.94ms` from Seoul, KR
77.85.91.53	AS8866 Vivacom Bulgaria EAD	`2.75ms` from Sofia, BG
121.61.112.37	AS4134 CHINANET-BACKBONE	`2.51ms` from Wuhan, CN

Traceroute

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

traceroute -a -n -q1 -f2 -m9 204.178.14.166

traceroute to 204.178.14.166 (204.178.14.166): 9 hops max, 52 byte packets

2 [AS55836] 115.247.14.169 84.772 ms

3 *

4 *

5 [AS64049] 103.198.140.176 27.322 ms

6 [AS64049] 49.45.4.96 172.408 ms

7 *

8 *

9 *

Measurement taken from

IPinfo ProbeNet in Pune, IN

On September 18th 2025

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.

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