Home Prefix Lookup144.225.56.0/21

144.225.56.0/21 - GTT BACKBONE GTT Communications (AS3257)

IPv4ARINannouncedAS3257GTT-BACKBONE GTT Communications Inc. RPKI Valid

CIDR

144.225.56.0/21

IP Version

IPv4

Addresses

Mask

/21 (255.255.248.0)

Country

🇫🇷 France

City

Puteaux

RIR

ARIN

Status

announced

Allocated

Announced BGP Routes

1 of 1 route

RPKI:

IRR:

Swipe sideways to see all columns →

Prefix	Origin AS	RPKI	IRR	Last Seen
144.225.56.0/21	AS3257 GTT-BACKBONE GTT Communications Inc.	Valid	ARIN	2026-10-13

More-Specific Announcements

8 more-specific announcements

Prefix	Origin AS	RPKI	IRR	Last Seen
144.225.56.0/24	AS401152 ADCIL-ASN-01 - Ace Data Centers II, L.L.C.	Invalid	-	2026-10-13
144.225.57.0/24	AS25868 ACE-002 - Ace Data Centers II, L.L.C.	Invalid	-	2026-10-13
144.225.58.0/24	AS26519 ACE-002 - Ace Data Centers II, L.L.C.	Invalid	-	2026-10-13
144.225.59.0/24	AS26639 ACE-002 - Ace Data Centers II, L.L.C.	Invalid	-	2026-10-13
144.225.60.0/24	AS26643 ACE-002 - Ace Data Centers II, L.L.C.	Invalid	-	2026-10-13
144.225.61.0/24	AS26969 ACE-002 - Ace Data Centers II, L.L.C.	Invalid	-	2026-10-13
144.225.62.0/24	AS29931 ACE-002 - Ace Data Centers II, L.L.C.	Invalid	-	2026-10-13
144.225.63.0/24	AS30218 ACE-002 - Ace Data Centers II, L.L.C.	Invalid	-	2026-10-13

RPKI ROAs

Prefix	Origin	Max Length	Trust Anchor
144.225.56.0/21	AS3257	/24	arin

IRR Route Objects

Origin	Registry	Maintainer	Modified
AS3257	ARIN	MNT-ADCIL	2026-08-25

Transfer History

Registry transfers of 144.225.56.0/21, blocks inside it, or blocks containing it.

144.225.0.0/16Transfer · 2025-04-07
T-Mobile USA, Inc.
🇺🇸 US ARIN
→
Ace Data Centers II, L.L.C.
🇺🇸 US ARIN
144.225.0.0/16M&A · 2023-01-26
Sprint
🇺🇸 US ARIN
→
T-Mobile USA, Inc.
🇺🇸 US ARIN

Date	Resource	From	To	Type
2025-04-07	144.225.0.0/16	T-Mobile USA, Inc. 🇺🇸 US ARIN	Ace Data Centers II, L.L.C. 🇺🇸 US ARIN	Transfer
2023-01-26	144.225.0.0/16	Sprint 🇺🇸 US ARIN	T-Mobile USA, Inc. 🇺🇸 US ARIN	M&A

Origin ASN

AS3257

GTT-BACKBONE GTT Communications Inc.

Related Prefixes

More prefixes of AS3257

All prefixes of AS3257 →

Geolocation

Country🇫🇷FranceFR

CityPuteaux

Abuse Contact

Learn more

RPKI and ROAs explainedWhat RPKI valid, invalid and no ROA mean
RPKI validatorCheck ROA coverage for any prefix or ASN
What is BGP?How prefixes are announced and routed
More-specific prefixesGlossary: covering and more-specific routes
IPv4 transfers in the ARIN regionWho bought and sold address space recently

API

Open

GEThttps://api.ipctl.io/v1/prefix/144.225.56.0/21

Returns prefix allocation, BGP routes, and more-specific subnets.

curl -s "https://api.ipctl.io/v1/prefix/144.225.56.0/21" | jq

External Links

RIPEstat