195.21.0.0/17

AS3257 · GTT Communications Inc.

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Summary

Country	United Kingdom
Domain	gtt.net
ASN	AS3257
Registry	RIPE
ID	US-GTTCOMMUNICATIONS-19961101

WHOIS Details

inetnum:        195.21.0.0 - 195.21.255.255
netname:        US-GTTCOMMUNICATIONS-19961101
country:        GB
geofeed:        https://geolocation.gtt.net/gtt_geolocation.csv
remarks:        Geofeed https://geolocation.gtt.net/gtt_geolocation.csv
org:            ORG-GCI2-RIPE
admin-c:        NET3257-RIPE
tech-c:         NET3257-RIPE
status:         ALLOCATED PA
mnt-by:         AS3257-NET-MNT
mnt-by:         RIPE-NCC-HM-MNT
mnt-lower:      AS3257-IPAM-MNT
mnt-domains:    AS3257-IPAM-MNT
mnt-routes:     AS3257-IPAM-MNT
created:        2021-03-22T11:12:53Z
last-modified:  2025-07-07T13:42:12Z
source:         RIPE
abuse-email:    [email protected]
abuse-c:        AR37017-RIPE
abuse-org:      ORG-GCI2-RIPE

organisation:   ORG-GCI2-RIPE
org-name:       GTT Communications Inc.
country:        US
org-type:       LIR
address:        Frankfurter Strasse 227
address:        63263
address:        Neu-Isenburg
address:        GERMANY
phone:          +1 703 442 5500
e-mail:         [email protected]
admin-c:        TK333-RIPE
tech-c:         TK333-RIPE
tech-c:         DS15504-RIPE
tech-c:         NN3489-RIPE
tech-c:         AV13497-RIPE
tech-c:         AV13497-RIPE
tech-c:         FP1849-RIPE
abuse-c:        AR37017-RIPE
mnt-ref:        AS3257-ROOT-MNT
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         AS3257-ROOT-MNT
created:        2016-07-19T07:50:40Z
last-modified:  2024-12-05T12:02:33Z
source:         RIPE
abuse-email:    [email protected]
abuse-c:        AR37017-RIPE
abuse-org:      undefined

role:           AS3257 Net Admin
address:        GTT
address:        Frankfurter Strasse 227
address:        63263 Neu-Isenburg
address:        Germany
phone:          +49 69 48007422
e-mail:         [email protected]
remarks:        Information: http://www.gtt.net
remarks:        Concerning abuse and spam ... mailto: [email protected]
abuse-mailbox:  [email protected]
admin-c:        SE33-RIPE
tech-c:         TK333-RIPE
nic-hdl:        NET3257-RIPE
remarks:        hostmaster role account
notify:         [email protected]
mnt-by:         AS3257-PERS-MNT
created:        2009-07-06T08:22:53Z
last-modified:  2024-12-05T11:55:55Z
source:         RIPE

route:          195.21.0.0/17
descr:          GTT
origin:         AS3257
mnt-by:         AS3257-ROUTE-MNT
mnt-lower:      AS3257-ROUTE-MNT
mnt-routes:     AS3257-IPAM-MNT
created:        2019-11-06T11:11:22Z
last-modified:  2025-07-08T07:24:33Z
source:         RIPE

Overlapping Ranges

BGP prefixes that are contained by 195.21.0.0/17

Range	ASN	Company	Num of IPs
195.21.49.0/24	AS3320	RCN	256
195.21.50.0/23	AS3320	RCN	512
195.21.96.0/19	AS1299	RCN	8,192
195.21.64.0/19	AS41354	GTT Communications Inc.	8,192

Nearby Ranges

BGP prefixes that overlap with 195.21.0.0/16

Range	ASN	Company	Num of IPs
195.21.96.0/19	AS1299	RCN	8,192
195.21.64.0/19	AS41354	GTT Communications Inc.	8,192
195.21.50.0/23	AS3320	RCN	512
195.21.49.0/24	AS3320	RCN	256

Hosted domains

There are 214 domain names hosted across 15 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
195.21.16.114	buildersofinfinity.com	144
195.21.16.104	carglass-specials.de	2
195.21.21.235	3icon.de	2
195.21.16.73	signon-group.de	1
195.21.16.99	serviceplan-executive-circle.com	1
195.21.21.218	me2022.com	1
195.21.16.117	santassecret.de	1
195.21.16.102	connecting-euro.org	1
195.21.16.100	trockennasenaffe.de	1
195.21.21.89	iselihof.ch	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

2,282 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
195.21.36.254	AS3257 GTT Communications Inc.	`0.43ms` from Amsterdam, NL
195.21.6.241	AS3257 GTT Communications Inc.	`1.16ms` from Budapest, HU
195.21.10.69	AS3257 GTT Communications Inc.	`0.66ms` from London, GB
195.21.76.154	AS41354 ITS Technology Group Limited	`0.79ms` from London, GB
195.21.54.113	AS3257 GTT Communications Inc.	`0.27ms` from Amsterdam, NL
195.21.87.109	AS41354 ITS Technology Group Limited	`0.56ms` from London, GB
195.21.80.89	AS41354 ITS Technology Group Limited	`0.73ms` from London, GB
195.21.52.140	AS3257 GTT Communications Inc.	`0.44ms` from Madrid, ES
195.21.20.145	AS3257 GTT Communications Inc.	`3.58ms` from Zuerich, CH
195.21.7.33	AS3257 GTT Communications Inc.	`0.93ms` from Budapest, HU
195.21.46.85	AS3257 GTT Communications Inc.	`0.67ms` from London, GB
195.21.53.97	AS3257 GTT Communications Inc.	`0.18ms` from Paris, FR
195.21.22.253	AS3257 GTT Communications Inc.	`3.93ms` from Zuerich, CH
195.21.39.229	AS3257 GTT Communications Inc.	`0.37ms` from Amsterdam, NL
195.21.82.18	AS41354 ITS Technology Group Limited	`0.30ms` from London, GB
195.21.9.34	AS3257 GTT Communications Inc.	`0.43ms` from London, GB
195.21.81.177	AS41354 ITS Technology Group Limited	`0.60ms` from London, GB
195.21.38.129	AS3257 GTT Communications Inc.	`0.34ms` from Milan, IT
195.21.0.245	AS3257 GTT Communications Inc.	`5.53ms` from Stockholm, SE
195.21.44.246	AS3257 GTT Communications Inc.	`0.32ms` from London, GB
195.21.72.10	AS41354 ITS Technology Group Limited	`1.11ms` from Manchester, GB
195.21.21.87	AS3257 GTT Communications Inc.	`0.41ms` from Zuerich, CH
195.21.32.122	AS3257 GTT Communications Inc.	`0.40ms` from Amsterdam, NL
195.21.31.49	AS3257 GTT Communications Inc.	`2.46ms` from Hong Kong, HK
195.21.92.29	AS41354 ITS Technology Group Limited	`0.54ms` from London, GB

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
94.58.250.1	AS5384 Emirates Internet	`5.54ms` from Al Fujairah City, AE
67.149.176.1	AS12083 WideOpenWest Finance LLC	`15.65ms` from Atlanta, US
153.33.26.1	AS23473 PAVLOV MEDIA INC	`4.21ms` from Atlanta, US
45.20.226.97	AS7018 AT&T Enterprises, LLC	`9.35ms` from Atlanta, US
113.53.96.1	AS23969 TOT Public Company Limited	`12.63ms` from Bangkok, TH
78.131.138.1	AS20960 TK Telekom sp. z o.o.	`6.41ms` from Berlin, DE
92.77.208.1	AS3209 Vodafone GmbH	`1.01ms` from Berlin, DE
190.248.154.1	AS13489 UNE EPM TELECOMUNICACIONES S.A.	`9.89ms` from Bogota, CO
109.110.148.1	AS50181 KabelszatNet-2002. Musoreloszto es Kereskedelmi Kft.	`0.63ms` from Budapest, HU
198.12.32.1	AS61452 Restel S.A.	`1.14ms` from Buenos Aires, AR
174.111.52.1	AS11426 Charter Communications Inc	`9.85ms` from Charlotte, US
66.93.48.1	AS401779 AaroBand, Inc.	`5.00ms` from Chicago, US
68.45.14.1	AS7922 Comcast Cable Communications, LLC	`9.02ms` from Chicago, US
66.190.216.1	AS20115 Charter Communications LLC	`12.79ms` from Dallas, US
32.132.84.225	AS7018 AT&T Enterprises, LLC	`1.01ms` from Durham, US
207.102.136.193	AS852 TELUS Communications Inc.	`12.45ms` from Edmonton, CA
153.95.91.129	AS24635 Syntax Service GmbH	`2.18ms` from Frankfurt am Main, DE
84.185.12.17	AS3320 Deutsche Telekom AG	`5.72ms` from Frankfurt am Main, DE
94.154.49.1	AS57433 intercolo GmbH	`0.65ms` from Frankfurt am Main, DE
183.233.167.225	AS9808 China Mobile Communications Group Co., Ltd.	`11.53ms` from Guangzhou, CN
218.92.82.1	AS4134 CHINANET-BACKBONE	`7.70ms` from Huai'an, CN
49.70.48.1	AS4134 CHINANET-BACKBONE	`13.85ms` from Huai'an, CN
213.14.230.1	AS34984 Superonline Iletisim Hizmetleri A.S.	`2.38ms` from Istanbul, TR
105.255.172.1	AS36994 Vodacom	`1.17ms` from Johannesburg, ZA
38.15.24.1	AS215595 SparkTech LTD	`0.18ms` from Kansas City, 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 195.21.40.233

traceroute to 195.21.40.233 (195.21.40.233): 64 hops max, 52 byte packets

3 [AS3257] 195.72.82.241 3.648 ms

4 [AS3257] 195.21.40.233 0.66 ms

Measurement taken from

IPinfo ProbeNet in London, GB

On November 28th 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.

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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