Home Prefix Lookup164.37.50.0/23

164.37.50.0/23 - F5 Networks SARL (AS35280)

IPv4RIPE NCCassignedAS35280F5 F5 Networks SARL RPKI Valid

CIDR

164.37.50.0/23

IP Version

IPv4

Addresses

512

Mask

/23 (255.255.254.0)

Country

🇧🇪 Belgium

City

Antwerp

RIR

RIPE NCC

Status

assigned

Allocated

1993-01-31

Announced BGP Routes

1 of 1 route

RPKI:

IRR:

Swipe sideways to see all columns →

Prefix	Origin AS	RPKI	IRR	Last Seen
164.37.50.0/23	AS35280 F5 F5 Networks SARL	Valid	RIPE	2026-10-11

RPKI ROAs

Prefix	Origin	Max Length	Trust Anchor
164.37.50.0/23	AS35280	/23	ripe

IRR Route Objects

Origin	Registry	Maintainer	Modified
AS35280	RIPE	lir-us-hilco-1-MNT	2026-09-04

Transfer History

Registry transfers of 164.37.50.0/23, blocks inside it, or blocks containing it.

164.37.50.0/23Transfer · 2026-09-01
Apoteket AB
🇸🇪 SE RIPE NCC
→
SD WORX People Solutions
🇧🇪 BE RIPE NCC
164.37.0.0/16Transfer · 2023-03-20
Semcon Sweden AB
RIPE NCC
→
Apoteket AB
RIPE NCC

Date	Resource	From	To	Type
2026-09-01	164.37.50.0/23	Apoteket AB 🇸🇪 SE RIPE NCC	SD WORX People Solutions 🇧🇪 BE RIPE NCC	Transfer
2023-03-20	164.37.0.0/16	Semcon Sweden AB RIPE NCC	Apoteket AB RIPE NCC	Transfer

Origin ASN

AS35280

F5 F5 Networks SARL

Related Prefixes

More prefixes of AS35280

All prefixes of AS35280 →

Geolocation

Country🇧🇪BelgiumBE

RegionFlanders

CityAntwerp

Coordinates51.2267, 4.4019 ↗

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 RIPE NCC regionWho bought and sold address space recently

API

Open

GEThttps://api.ipctl.io/v1/prefix/164.37.50.0/23

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

curl -s "https://api.ipctl.io/v1/prefix/164.37.50.0/23" | jq

External Links

RIPEstat