AS3257

Name: AS3257 — GTT Communications Inc.
Creator: ipdex

GTT Communications Inc. ISP registered in United States

1,344IPv4 prefixes

48IPv6 prefixes

36%RPKI-valid

#3AS Rank

#25Rank in United States

1994-09-30Allocated

GTT Communications Inc. (AS3257) — ISP, registered in United States. announces 1,344 IPv4 prefixes + 48 IPv6 prefixes. Rank in United States: #25. Allocated: 1994-09-30.

IPv4 1,344IPv6 48

Announced prefixes · 1,392

v4 153.76.24.0/21 unknown
v4 154.14.0.0/16 unknown
v4 154.14.51.0/24 unknown
v4 154.14.58.0/24 unknown
v4 154.15.0.0/16 unknown
v4 154.206.240.0/21 invalid
v4 154.206.248.0/21 invalid
v4 154.208.112.0/21 unknown
v4 154.208.64.0/21 unknown
v4 154.81.50.0/24 valid
v4 155.117.162.0/24 valid
v4 155.229.0.0/16 unknown
v4 155.229.51.0/24 unknown
v4 155.229.90.0/24 valid
v4 155.229.91.0/24 valid
v4 155.229.92.0/24 valid
v4 155.229.93.0/24 valid
v4 156.225.15.0/24 valid
v4 156.228.16.0/23 valid
v4 156.228.7.0/24 valid
v4 156.228.9.0/24 valid
v4 156.43.80.0/24 unknown
v4 159.63.176.0/21 unknown
v4 160.48.160.0/23 unknown
v4 160.48.161.0/24 unknown
v4 161.195.157.0/24 valid
v4 162.141.122.0/24 valid
v4 162.141.165.0/24 valid
v4 162.141.49.0/24 valid
v4 162.141.64.0/24 valid
v4 162.141.95.0/24 valid
v4 162.142.20.0/24 unknown
v4 162.142.22.0/24 unknown
v4 162.210.152.0/22 unknown
v4 162.210.154.0/24 unknown
v4 162.210.155.0/24 unknown
v4 162.212.200.0/21 unknown
v4 162.221.208.0/22 unknown
v4 162.244.156.0/23 unknown
v4 162.244.76.0/22 unknown
v4 162.246.12.0/22 unknown
v4 166.88.181.0/24 valid
v4 166.88.212.0/24 valid
v4 166.88.45.0/24 valid
v4 166.90.76.0/24 unknown
v4 166.90.77.0/24 unknown
v4 166.90.78.0/24 unknown
v4 166.90.79.0/24 unknown
v4 167.148.1.0/24 valid
v4 167.148.100.0/24 valid

RPKI: rpki.cloudflare.com · 2026-06-21

— Routing status unavailable

Prefix history

Announced prefixes Source: ipdex daily snapshot · sparse rows, value holds until the next change (steps)

Data table

Day	Announced prefixes
2026-06-12	1400
2026-06-13	1400
2026-06-14	1391
2026-06-16	1391
2026-06-17	1391
2026-06-19	1391
2026-06-20	1392
2026-06-21	1392

Internet Exchanges · 2

DE-CIX Frankfurt Frankfurt 100 Gbps
LINX LON1 London 10 Gbps

Facilities · 275

275 Facilities · 32 Countries

123.NET - DC1 - 24700 Northwestern Hwy. Southfield
1500 Champa Denver
AT TOKYO (CC1/CC2) Tokyo
ATMAN Data Center Warsaw-2 (WAW-2, Konstruktorska 5) Warsaw
Arelion Oslo OKR/C Oslo
BIT-2 Ede
BIX Building (Victor Hugo street) Budapest
Bulk Oslo Internet Exchange - OS-IX Oslo
CE Colo Prague Prague
CIX Cork City
COLT in Asia Tokyo Data Center 1 (TDC1) Tokyo
CarrierColo Berlin Luetzow (I/P/B/ site B) Berlin
ColoHouse Miami Miami
Cologix COL1 Columbus
Cologix COL2 Columbus
Cologix COL3 Columbus
Cologix DAL1 Dallas
Cologix DAL2 Dallas
Cologix DAL3 Dallas
Cologix JAX1 Jacksonville
Cologix MIN1 Minneapolis
Cologix MTL1 Montreal
Cologix MTL2 Montreal
Cologix MTL3 Montreal
Cologix TOR1 Toronto

+250

Embed this on your site

Free badges and live charts — they update as the index does. No key, link back to ipdex.

Badge

Markdown

[![AS3257 on ipdex](https://ipdex.io/badge/asn/3257.svg)](https://ipdex.io/asn/AS3257/)

HTML

<a href="https://ipdex.io/asn/AS3257/"><img src="https://ipdex.io/badge/asn/3257.svg" alt="AS3257 on ipdex"></a>

Live chart (iframe)

<iframe src="https://ipdex.io/embed/asn/3257" width="680" height="260" frameborder="0" scrolling="no" title="ipdex chart" style="border:0;max-width:100%"></iframe>

oEmbed-enabled: paste the page URL into platforms that support oEmbed and the chart embeds automatically.