Home Prefix Lookup81.0.204.0/23

81.0.204.0/23 - WIA Spol. S.R.O (AS21430)

IPv4RIPE NCCallocatedAS21430WIA-AS WIA spol. s.r.o. RPKI Valid

CIDR

81.0.204.0/23

IP Version

IPv4

Addresses

512

Mask

/23 (255.255.254.0)

Country

🇨🇿 Czechia

City

Prague

RIR

RIPE NCC

Status

allocated

Allocated

2001-12-14

Announced BGP Routes

1 of 1 route

RPKI:

IRR:

Swipe sideways to see all columns →

Prefix	Origin AS	RPKI	IRR	Last Seen
81.0.204.0/23	AS21430 WIA-AS WIA spol. s.r.o.	Valid	RIPE	2026-10-11

RPKI ROAs

Prefix	Origin	Max Length	Trust Anchor
81.0.204.0/23	AS21430	/23	ripe

IRR Route Objects

Origin	Registry	Maintainer	Modified
AS21430	RIPE	CASABLANCA-CORE-MNT	2019-09-03

More Specific Prefixes

Prefix	Country	Status
81.0.204.0/24	🇨🇿CZ	assigned
81.0.205.0/29	🇨🇿CZ	assigned
81.0.205.8/31	🇨🇿CZ	assigned
81.0.205.12/30	🇨🇿CZ	assigned
81.0.205.20/30	🇨🇿CZ	assigned
81.0.205.24/30	🇨🇿CZ	assigned
81.0.205.28/30	🇨🇿CZ	assigned
81.0.205.32/30	🇨🇿CZ	assigned
81.0.205.40/31	🇨🇿CZ	assigned
81.0.205.42/31	🇨🇿CZ	assigned
81.0.205.44/30	🇨🇿CZ	assigned
81.0.205.50/31	🇨🇿CZ	assigned
81.0.205.56/31	🇨🇿CZ	assigned
81.0.205.58/31	🇨🇿CZ	assigned
81.0.205.64/31	🇨🇿CZ	assigned
81.0.205.66/31	🇨🇿CZ	assigned
81.0.205.80/31	🇨🇿CZ	assigned
81.0.205.82/31	🇨🇿CZ	assigned
81.0.205.92/30	🇨🇿CZ	assigned
81.0.205.104/31	🇨🇿CZ	assigned
81.0.205.106/31	🇨🇿CZ	assigned
81.0.205.152/31	🇨🇿CZ	assigned
81.0.205.154/31	🇨🇿CZ	assigned
81.0.205.160/31	🇨🇿CZ	assigned
81.0.205.162/31	🇨🇿CZ	assigned
81.0.205.176/31	🇨🇿CZ	assigned
81.0.205.178/31	🇨🇿CZ	assigned
81.0.205.180/30	🇨🇿CZ	assigned
81.0.205.184/30	🇨🇿CZ	assigned
81.0.205.188/31	🇨🇿CZ	assigned
81.0.205.192/31	🇨🇿CZ	assigned
81.0.205.194/31	🇨🇿CZ	assigned
81.0.205.196/31	🇨🇿CZ	assigned
81.0.205.198/31	🇨🇿CZ	assigned
81.0.205.200/30	🇨🇿CZ	assigned
81.0.205.210/31	🇨🇿CZ	assigned
81.0.205.212/31	🇨🇿CZ	assigned
81.0.205.214/31	🇨🇿CZ	assigned
81.0.205.220/31	🇨🇿CZ	assigned
81.0.205.222/31	🇨🇿CZ	assigned
81.0.205.224/30	🇨🇿CZ	assigned
81.0.205.228/31	🇨🇿CZ	assigned
81.0.205.230/31	🇨🇿CZ	assigned
81.0.205.232/31	🇨🇿CZ	assigned
81.0.205.234/31	🇨🇿CZ	assigned
81.0.205.236/31	🇨🇿CZ	assigned
81.0.205.238/31	🇨🇿CZ	assigned
81.0.205.242/31	🇨🇿CZ	assigned
81.0.205.246/31	🇨🇿CZ	assigned
81.0.205.248/31	🇨🇿CZ	assigned
81.0.205.250/31	🇨🇿CZ	assigned

Transfer History

Registry transfers of 81.0.204.0/23, blocks inside it, or blocks containing it.

81.0.204.0/23Transfer · 2022-07-28
CASABLANCA INT a.s.
RIPE NCC
→
WIA spol. s.r.o.
RIPE NCC
81.0.192.0/18M&A · 2020-07-22
Casablanca INT
RIPE NCC
→
CASABLANCA INT a.s.
RIPE NCC

Date	Resource	From	To	Type
2022-07-28	81.0.204.0/23	CASABLANCA INT a.s. RIPE NCC	WIA spol. s.r.o. RIPE NCC	Transfer
2020-07-22	81.0.192.0/18	Casablanca INT RIPE NCC	CASABLANCA INT a.s. RIPE NCC	M&A

Origin ASN

AS21430

WIA-AS WIA spol. s.r.o.

Related Prefixes

More prefixes of AS21430

All prefixes of AS21430 →

Geolocation

Country🇨🇿CzechiaCZ

RegionHlavní město Praha

CityPrague

Coordinates50.0781, 14.4721 ↗

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/81.0.204.0/23

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

curl -s "https://api.ipctl.io/v1/prefix/81.0.204.0/23" | jq

External Links

RIPEstat