Home Prefix Lookup81.0.240.0/23

81.0.240.0/23 - CASABLANCA INT A.S (AS15685)

IPv4RIPE NCCannouncedAS15685CASABLANCA-AS CASABLANCA INT a.s. RPKI Valid

CIDR

81.0.240.0/23

IP Version

IPv4

Addresses

512

Mask

/23 (255.255.254.0)

Country

🇨🇿 Czechia

City

Prague

RIR

RIPE NCC

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
81.0.240.0/23	AS15685 CASABLANCA-AS CASABLANCA INT a.s.	Valid	RIPE	2026-10-11

RPKI ROAs

Prefix	Origin	Max Length	Trust Anchor
81.0.240.0/23	AS15685	/23	ripe
81.0.240.0/22	AS15685	/22	ripe

IRR Route Objects

Origin	Registry	Maintainer	Modified
AS15685	RIPE	CASABLANCA-CORE-MNT	2025-06-04

More Specific Prefixes

Prefix	Country	Status
81.0.240.0/25	🇨🇿CZ	assigned
81.0.240.128/27	🇨🇿CZ	assigned
81.0.240.160/27	🇨🇿CZ	assigned
81.0.240.192/26	🇨🇿CZ	assigned
81.0.241.128/28	🇨🇿CZ	assigned

Transfer History

Registry transfers of 81.0.240.0/23, blocks inside it, or blocks containing it.

81.0.192.0/18M&A · 2020-07-22
Casablanca INT
RIPE NCC
→
CASABLANCA INT a.s.
RIPE NCC

Date	Resource	From	To	Type
2020-07-22	81.0.192.0/18	Casablanca INT RIPE NCC	CASABLANCA INT a.s. RIPE NCC	M&A

Origin ASN

AS15685

CASABLANCA-AS CASABLANCA INT a.s.

Related Prefixes

More prefixes of AS15685

All prefixes of AS15685 →

Geolocation

Country🇨🇿CzechiaCZ

RegionPrague

CityPrague

Coordinates50.0755, 14.4378 ↗

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/81.0.240.0/23

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

curl -s "https://api.ipctl.io/v1/prefix/81.0.240.0/23" | jq

External Links

RIPEstat