Home Prefix Lookup164.138.4.0/24

164.138.4.0/24 - Xtdef Limited (AS203997)

IPv4RIPEassignedAS203997xtdef XTDef Limited RPKI Valid

CIDR

164.138.4.0/24

IP Version

IPv4

Addresses

256

Mask

/24 (255.255.255.0)

Country

🇫🇮 Finland

City

Helsinki

RIR

RIPE

Status

assigned

Allocated

Announced BGP Routes

1 of 1 route

RPKI:

IRR:

Swipe sideways to see all columns →

Prefix	Origin AS	RPKI	IRR	Last Seen
164.138.4.0/24	AS203997 xtdef XTDef Limited	Valid	RIPE	2026-10-11

RPKI ROAs

Prefix	Origin	Max Length	Trust Anchor
164.138.4.0/24	AS203997	/24	ripe
164.138.0.0/20	AS0	/32	ripe

IRR Route Objects

Origin	Registry	Maintainer	Modified
AS203997	RIPE	interlir-mnt	2026-09-25

Transfer History

Registry transfers of 164.138.4.0/24, blocks inside it, or blocks containing it.

164.138.0.0/20Transfer · 2024-12-20
ProstoDNS Ltd.
RIPE NCC
→
Nameto Oy
RIPE NCC

Date	Resource	From	To	Type
2024-12-20	164.138.0.0/20	ProstoDNS Ltd. RIPE NCC	Nameto Oy RIPE NCC	Transfer

Origin ASN

AS203997

xtdef XTDef Limited

Related Prefixes

More prefixes of AS203997

All prefixes of AS203997 →

Geolocation

Country🇫🇮FinlandFI

CityHelsinki

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 transfer marketTransfers published by all five RIRs

API

Open

GEThttps://api.ipctl.io/v1/prefix/164.138.4.0/24

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

curl -s "https://api.ipctl.io/v1/prefix/164.138.4.0/24" | jq

External Links

RIPEstat