Sign inMonitor a domain
AS3257

AS3257 is GTT Communications Inc..

Last updated 3 Nov 2026 from DB-IP ASN Lite (2026-11-01) and RIR statistics (4 Nov 2026)

Short answer

AS3257 belongs to GTT Communications Inc.. DB-IP Lite attributes 4,026,368 IPv4 addresses in 2,523 ranges and 53 IPv6 ranges to it, 35% of the IPv4 space in United States. The number is registered with RIPE NCC in United States on 30 Sept 1994.

Facts for AS3257
Operator (DB-IP)GTT Communications Inc.
IPv4 addresses4,026,368
IPv4 ranges2,523
IPv6 ranges53
RegistryRIPE NCC
Registered30 Sept 1994
Registry countryUnited States (US)

Does it publish a geofeed?

We haven’t checked this network’s registry records for a geofeed yet. The Truth Check looks for one live for any address you test.

Shared addresses (CGNAT)

GTT Communications Inc. hasn’t been documented as using carrier-grade NAT in a source we could check. To see whether your own connection is behind it, compare your router’s address on the CGNAT check.

IPv6

DB-IP lists 53 IPv6 ranges for AS3257, so customers can get IPv6 addresses, which databases place separately from IPv4.

Where its IPv4 space is used, according to DB-IP

US35%
GB27%
DE11%
FR6%
CA5%
NL4%
BE1%
MX1%

Share of the network’s IPv4 addresses by DB-IP Country Lite. IP Geolocation by DB-IP.

IP ranges

RangeAs CIDRAddresses
2.26.180.0 – 2.26.180.2552.26.180.0/24256
2.26.184.0 – 2.26.184.2552.26.184.0/24256
2.26.240.0 – 2.26.247.2552.26.240.0/212,048
2.27.172.0 – 2.27.172.2552.27.172.0/24256
2.27.196.0 – 2.27.199.2552.27.196.0/221,024
2.27.218.0 – 2.27.223.2552.27.218.0/23, 2.27.220.0/221,536
2.27.232.0 – 2.27.232.2552.27.232.0/24256
2.27.235.0 – 2.27.235.2552.27.235.0/24256
2.27.238.0 – 2.27.238.2552.27.238.0/24256
2.27.247.0 – 2.27.247.2552.27.247.0/24256
2.56.236.0 – 2.56.239.2552.56.236.0/221,024
2.58.75.0 – 2.58.75.2552.58.75.0/24256
5.83.96.0 – 5.83.103.2555.83.96.0/212,048
5.178.16.0 – 5.178.23.2555.178.16.0/212,048
5.180.4.0 – 5.180.7.2555.180.4.0/221,024
5.252.77.0 – 5.252.77.2555.252.77.0/24256
5.253.202.0 – 5.253.202.2555.253.202.0/24256
8.19.112.0 – 8.19.112.2558.19.112.0/24256
8.19.203.0 – 8.19.203.2558.19.203.0/24256
8.31.122.0 – 8.31.122.2558.31.122.0/24256
8.35.16.0 – 8.35.31.2558.35.16.0/204,096
8.37.186.0 – 8.37.186.2558.37.186.0/24256
13.143.152.0 – 13.143.159.25513.143.152.0/212,048
13.143.177.0 – 13.143.177.25513.143.177.0/24256
16.5.72.0 – 16.5.79.25516.5.72.0/212,048
16.5.118.0 – 16.5.119.25516.5.118.0/23512
16.5.168.0 – 16.5.171.25516.5.168.0/221,024
23.26.5.0 – 23.26.9.25523.26.5.0/24, 23.26.6.0/23 …1,280
23.26.11.0 – 23.26.13.25523.26.11.0/24, 23.26.12.0/23768
23.26.16.0 – 23.26.19.25523.26.16.0/221,024
23.26.21.0 – 23.26.22.25523.26.21.0/24, 23.26.22.0/24512
23.26.198.0 – 23.26.198.25523.26.198.0/24256
23.27.3.0 – 23.27.3.25523.27.3.0/24256
23.27.8.0 – 23.27.8.25523.27.8.0/24256
23.27.30.0 – 23.27.30.25523.27.30.0/24256
23.27.114.0 – 23.27.114.25523.27.114.0/24256
23.27.134.0 – 23.27.134.25523.27.134.0/24256
23.27.216.0 – 23.27.216.25523.27.216.0/24256
23.27.238.0 – 23.27.238.25523.27.238.0/24256
23.184.144.0 – 23.184.144.25523.184.144.0/24256
23.230.1.0 – 23.230.1.25523.230.1.0/24256
23.230.64.0 – 23.230.64.25523.230.64.0/24256
23.230.121.0 – 23.230.121.25523.230.121.0/24256
23.230.186.0 – 23.230.186.25523.230.186.0/24256
23.230.234.0 – 23.230.235.25523.230.234.0/23512
23.231.111.0 – 23.231.111.25523.231.111.0/24256
23.231.115.0 – 23.231.115.25523.231.115.0/24256
23.231.120.0 – 23.231.120.25523.231.120.0/24256
23.234.128.0 – 23.234.143.25523.234.128.0/204,096
23.234.156.0 – 23.234.159.25523.234.156.0/221,024
2001:590:: – 2001:590:3802:ffff:ffff:ffff:ffff:ffff2001:590::/35IPv6
2001:590:3804:: – 2001:590:ffff:ffff:ffff:ffff:ffff:ffff2001:590:3804::/46IPv6
2001:668:: – 2001:668:1f3:ffff:ffff:ffff:ffff:ffff2001:668::/40IPv6
2001:668:1fd:: – 2001:66f:ffff:ffff:ffff:ffff:ffff:ffff2001:668:1fd::/48IPv6
2001:67c:1514:: – 2001:67c:1514:ffff:ffff:ffff:ffff:ffff2001:67c:1514::/48IPv6
2001:680:: – 2001:680:ffff:ffff:ffff:ffff:ffff:ffff2001:680::/32IPv6
2001:6f8:: – 2001:6f8:ffff:ffff:ffff:ffff:ffff:ffff2001:6f8::/32IPv6
2001:aa0:: – 2001:aa0:dff:ffff:ffff:ffff:ffff:ffff2001:aa0::/37IPv6
2001:aa0:f00:: – 2001:aa0:7003:ffff:ffff:ffff:ffff:ffff2001:aa0:f00::/40IPv6
2001:aa0:7005:: – 2001:aa0:ffff:ffff:ffff:ffff:ffff:ffff2001:aa0:7005::/48IPv6
2001:1478:: – 2001:1478:ffff:ffff:ffff:ffff:ffff:ffff2001:1478::/32IPv6
2001:4890:: – 2001:4890:ffff:ffff:ffff:ffff:ffff:ffff2001:4890::/32IPv6
2400:f780:: – 2400:f780:ffff:ffff:ffff:ffff:ffff:ffff2400:f780::/32IPv6
2405:5e00:: – 2405:5e00:ffff:ffff:ffff:ffff:ffff:ffff2405:5e00::/32IPv6
2600:1407:1c:: – 2600:1407:1c:ffff:ffff:ffff:ffff:ffff2600:1407:1c::/48IPv6
2604:cf80:: – 2604:cf80:ffff:ffff:ffff:ffff:ffff:ffff2604:cf80::/32IPv6
2605:d480:: – 2605:d480:ffff:ffff:ffff:ffff:ffff:ffff2605:d480::/32IPv6
2606:6200:: – 2606:6200:ffff:ffff:ffff:ffff:ffff:ffff2606:6200::/32IPv6
2607:f588:: – 2607:f588:ffff:ffff:ffff:ffff:ffff:ffff2607:f588::/32IPv6
2610:38:: – 2610:38:ffff:ffff:ffff:ffff:ffff:ffff2610:38::/32IPv6
Showing 50 of 2,523 IPv4 and 20 of 53 IPv6 ranges All ranges (CSV)

IP Geolocation by DB-IP, ASN Lite, CC BY 4.0.

Using an address from this network? See which sources agree on where it is.

Sources

  1. DB-IP IP to ASN Lite (CC BY 4.0) · checked 3 Nov 2026
  2. NRO RIR delegated-extended statistics · checked 5 Nov 2026