# 154.14.144.138 — IP Intelligence Summary

154.14.144.138 is an IPv4 address operated by GTT-BACKBONE - GTT Communications Inc., US (AS3257), with approximate network location Warsaw, United Kingdom. Its reverse DNS name is ip4.gtt.net. As of November 13, 2026, IPDebrief rates it Low Risk (0/100); no anonymizing service was detected.

- Canonical page: https://ipdebrief.com/154.14.144.138
- Last updated: 2026-11-13

## Ownership

- Organization: AS3257-NET-MNT
- Network name: GTT-EU
- Allocated block: 154.14.128.0/19
- ASN: AS3257 (https://ipdebrief.com/asn/3257)
- Regional registry: AFRINIC
- Registered holder: AS3257-NET-MNT
- Routing operator: GTT-BACKBONE - GTT Communications Inc., US
- Network registration country: DE
- Registrant address country: —

## Location

- City: Warsaw
- Region: Mazovia
- Country: United Kingdom
- Time zone: Europe/London

Approximate network location; registration and certificate addresses are not server-location evidence.

## Network classification

- Infrastructure type: —
- Datacenter / hosting: no
- Residential: no
- Mobile: no
- Anycast: Unverified (not proof of unicast)
- Tor exit node: no
- VPN: no
- Proxy: no

## Risk assessment

- Assessment: Low Risk (0/100)
- Blocklist listings: 0
- Suspicious activity indicators: no
- Spam source: no

## Reverse DNS

- ip4.gtt.net
- Forward-confirmed: no

## Exposed services

- 443/tcp — https
- 22/tcp — ssh

## DNS posture

Mail authentication and CAA are optional domain policies, not IP-wide requirements.

- caa: Not found at queried name (net)
- spf: Unknown / lookup inconclusive (ip4.gtt.net)
- dmarc: Unknown / lookup inconclusive (_dmarc.ip4.gtt.net)
- dnssec: Unknown / lookup inconclusive (138.144.14.154.in-addr.arpa)
- fcrDns: Unknown / lookup inconclusive (ip4.gtt.net)

## TLS observations

- E=support@fortinet.com, CN=S124FNTF25040995, OU=FortiSwitch, O=Fortinet, L=Sunnyvale, S=California, C=US; port unknown; target —; Historical certificate; current certificate unknown; valid until 2056-05-26T20:48:33.0000000+00:00

## Nearby addresses

- 154.14.144.86 (https://ipdebrief.com/154.14.144.86)
- 154.14.144.90 (https://ipdebrief.com/154.14.144.90)

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Source: IPDebrief, "154.14.144.138 IP intelligence", https://ipdebrief.com/154.14.144.138, updated 2026-11-13. Assessments are probabilistic.