37.1.152.0/21

AS3257 · GTT Communications Inc.

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Summary

Country	United Kingdom
Domain	mdnx.com
ASN	AS3257
Registry	RIPE
ID	UK-EASYNET-20111213

WHOIS Details

inetnum:        37.1.152.0 - 37.1.159.255
netname:        UK-EASYNET-20111213
country:        GB
org:            ORG-EA49-RIPE
admin-c:        MDNX2-RIPE
tech-c:         MDNX1-RIPE
status:         ALLOCATED PA
notify:         [email protected]
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         EASYNET-UK-MNT
mnt-by:         AS8190-MNT
mnt-routes:     AS8190-MNT
created:        2011-12-13T09:09:05Z
last-modified:  2022-09-05T07:35:16Z
source:         RIPE
abuse-email:    [email protected]
abuse-c:        AR17615-RIPE
abuse-org:      ORG-EA49-RIPE

organisation:   ORG-EA49-RIPE
org-name:       GTT - EMEA Ltd.
country:        GB
org-type:       LIR
address:        Waterfront House, Beeston Business Park Technology Drive
address:        NG9 1LA
address:        Nottingham
address:        UNITED KINGDOM
phone:          +442074897200
fax-no:         +442074897200
mnt-by:         EASYNET-UK-MNT
mnt-ref:        EASYNET-UK-MNT
mnt-ref:        RIPE-NCC-HM-MNT
mnt-by:         RIPE-NCC-HM-MNT
abuse-c:        AR17615-RIPE
admin-c:        TF3383-RIPE
admin-c:        EE1956-RIPE
admin-c:        JB9165-RIPE
admin-c:        CV3892-RIPE
created:        2004-04-17T12:13:55Z
last-modified:  2025-11-21T08:00:13Z
source:         RIPE
e-mail:         [email protected]
abuse-email:    [email protected]
abuse-c:        AR17615-RIPE
abuse-org:      undefined

role:           MDNX Network Operations Centre
address:        St James House
address:        Oldbury
address:        Bracknell
address:        RG12 8TH
address:        United Kingdom
phone:          +44 1344 543 700
e-mail:         [email protected]
remarks:        trouble: For abuse issues - [email protected]
remarks:        trouble: For peering requests - [email protected]
remarks:        trouble: For operational issues - [email protected]
abuse-mailbox:  [email protected]
notify:         [email protected]
admin-c:        MDNX2-RIPE
tech-c:         OOO3-RIPE
tech-c:         MWMW1-RIPE
nic-hdl:        MDNX1-RIPE
mnt-by:         AS8190-MNT
created:        2014-01-31T13:35:11Z
last-modified:  2014-02-03T11:08:26Z
source:         RIPE

role:           MDNX IP Engineering
address:        St James House
address:        Oldbury
address:        Bracknell
address:        RG12 8TH
address:        United Kingdom
phone:          +44 1344 543 700
e-mail:         [email protected]
remarks:        trouble: For abuse issues - [email protected]
remarks:        trouble: For peering requests - [email protected]
remarks:        trouble: For operational issues - [email protected]
abuse-mailbox:  [email protected]
notify:         [email protected]
admin-c:        MWMW1-RIPE
admin-c:        OOO3-RIPE
tech-c:         MWMW1-RIPE
tech-c:         OOO3-RIPE
nic-hdl:        MDNX2-RIPE
mnt-by:         AS8190-MNT
created:        2014-01-31T13:36:59Z
last-modified:  2014-02-03T11:09:39Z
source:         RIPE

route:          37.1.152.0/21
descr:          GTT
origin:         AS3257
mnt-by:         AS3257-ROUTE-MNT
created:        2023-02-13T10:37:07Z
last-modified:  2023-02-13T10:37:07Z
source:         RIPE

route:          37.1.152.0/21
descr:          MDNX Enterprise Services Limited
origin:         AS8190
mnt-by:         AS8190-MNT
created:        2011-12-15T09:44:02Z
last-modified:  2014-01-31T13:47:54Z
source:         RIPE

Nearby Ranges

BGP prefixes that overlap with 37.1.0.0/16

Range	ASN	Company	Num of IPs
37.1.0.0/18	AS34456	Rial Com JSC	16,384
37.1.32.0/19	AS34456	RialCom dynamic pppoe network for customers	8,192
37.1.0.0/19	AS34456	RialCom dynamic pppoe network for customers	8,192
37.1.112.0/20	AS57618	JIntelligence GmbH	4,096
37.1.240.0/20	AS48072	Alsatis SAS	4,096
37.1.216.0/21	AS58061	IROKO Networks Corporation	2,048
37.1.192.0/21	AS28753	IROKO Networks Corporation	2,048
37.1.208.0/21	AS29802	IROKO Networks Corporation	2,048
37.1.96.0/21	AS35826	Netservers Limited	2,048
37.1.200.0/21	AS58061	IROKO Networks Corporation	2,048
37.1.128.0/21	AS48524	VPN (PPPoE) customers Sverdlovsk reg. Interra Ltd.	2,048
37.1.136.0/21	AS48524	VPN (PPPoE) customers Sverdlovsk reg. Interra Ltd.	2,048
37.1.104.0/21	AS49250	onecentral B.V.	2,048
37.1.88.0/21	AS50763	MCKAYCOM	2,048
37.1.184.0/21	AS7155	Skylogic Finland Oy	2,048
37.1.232.0/21	AS51207	Free Mobile SAS	2,048
37.1.176.0/21	AS7155	Skylogic Espana S.L.	2,048
37.1.160.0/21	AS7155	Skylogic Germany GmbH	2,048
37.1.80.0/21	AS197078	Yarnet Ltd	2,048
37.1.72.0/23	AS12389	OJSC Chukotkasvyazinform	512
37.1.104.0/23	AS49250	onecentral B.V.	512
37.1.151.0/24	AS50941	Netinternet Bilisim Teknolojileri AS	256
37.1.145.0/24	AS50941	Vargonen	256
37.1.241.0/24	AS48072	SAS ALSATIS	256
37.1.227.0/24	AS393942	Private Customer	256
37.1.226.0/24	AS207994	Blockchain Creek	256
37.1.228.0/24	AS61317	Private Customer	256
37.1.229.0/24	AS61317	Private Customer	256
37.1.230.0/24	AS61317	Private Customer	256
37.1.231.0/24	AS61317	Private Customer	256
37.1.225.0/24	AS153993	Internet Utilities Europe and Asia Limited	256
37.1.162.0/24	AS7155	Skylogic Germany GmbH	256
37.1.75.0/24	AS12389	OJSC Chukotkasvyazinform	256
37.1.74.0/24	AS12389	OJSC Chukotkasvyazinform	256
37.1.184.0/24	AS7155	Skylogic Finland Oy	256
37.1.224.0/24	AS834	Internet Utilities Europe and Asia Limited	256

Hosted domains

There are no domains currently hosted on this ASN.

Hosted domains API

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Pingable IPs

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

IP Address	ASN	Details
37.1.155.89	AS3257 GTT Communications Inc.	`0.46ms` from London, GB
37.1.156.253	AS3257 GTT Communications Inc.	`0.60ms` from London, GB
37.1.159.42	AS3257 GTT Communications Inc.	`3.56ms` from London, GB
37.1.154.9	AS3257 GTT Communications Inc.	`0.54ms` from London, GB
37.1.158.201	AS3257 GTT Communications Inc.	`2.65ms` from London, GB
37.1.153.81	AS3257 GTT Communications Inc.	`0.57ms` from London, GB
37.1.152.113	AS3257 GTT Communications Inc.	`0.74ms` from Manchester, 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
216.24.77.229	AS7795 LUMOS Networks, Inc.	`6.25ms` from Ashburn, US
223.204.50.149	AS45758 Triple T Broadband Public Company Limited	`5.09ms` from Bangkok, TH
44.228.6.213	AS16509 Amazon.com, Inc.	`0.18ms` from Boardman, US
81.242.145.133	AS5432 Proximus NV	`3.44ms` from Brussels, BE
187.55.29.165	AS8167 V tal	`7.61ms` from Curitiba, BR
93.205.138.165	AS3320 Deutsche Telekom AG	`4.87ms` from Frankfurt am Main, DE
190.214.22.85	AS28006 CORPORACION NACIONAL DE TELECOMUNICACIONES - CNT EP	`1.74ms` from Guayaquil, EC
43.198.58.197	AS16509 Amazon.com, Inc.	`0.14ms` from Hong Kong, HK
107.170.32.37	AS14061 DigitalOcean, LLC	`0.69ms` from New York City, US
90.83.244.69	AS3215 Orange S.A.	`7.71ms` from Paris, FR
195.101.215.165	AS3215 Orange S.A.	`5.26ms` from Paris, FR
98.36.58.149	AS7922 Comcast Cable Communications, LLC	`6.86ms` from San Jose, US
200.202.39.5	AS8141 SO SOFTWARE INFORMATICA LTDA	`13.79ms` from Sao Paulo, BR
1.244.52.149	AS9318 SK Broadband Co Ltd	`2.81ms` from Seoul, KR
43.156.185.197	AS132203 Tencent Building, Kejizhongyi Avenue	`0.67ms` from Singapore, SG
78.142.87.229	AS35579 KELAG-Karntner Elektrizitats - Aktiengesellschaft	`5.89ms` from Vienna, AT
61.1.22.117	AS9829 National Internet Backbone	`13.60ms` from Bengaluru, IN
20.65.28.133	AS8075 Microsoft Corporation	`0.27ms` from Boydton, US
170.78.89.149	AS263786 COOP. ELECTRICA DE CHACABUCO LTDA.	`7.80ms` from Buenos Aires, AR
197.51.224.229	AS8452 TE-AS	`7.73ms` from Cairo, EG
46.244.190.101	AS8767 M-net Telekommunikations GmbH	`6.29ms` from Frankfurt am Main, DE
112.16.57.101	AS56041 China Mobile communications corporation	`10.30ms` from Hangzhou, CN
62.142.226.101	AS719 Elisa Oyj	`0.53ms` from Helsinki, FI
103.144.4.5	AS139414 Pemerintah Kabupaten Kudus	`7.03ms` from Jakarta, ID
85.208.143.5	AS202047 BREAK FREE TELECOM SL	`0.22ms` from Madrid, ES

Traceroute

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

traceroute -a -n -q1 -f3 37.1.153.57

traceroute to 37.1.153.57 (37.1.153.57): 64 hops max, 52 byte packets

3 [AS36236] 185.40.232.33 0.481 ms

4 [AS3257] 212.222.182.121 0.44 ms

5 [AS3257] 37.1.153.57 1.571 ms

Measurement taken from

IPinfo ProbeNet in London, GB

On December 6th 2025

What are IP address ranges?

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