Home ASN LookupAS12570

AS12570 ITSELF O2 Czech Republic, a.s.

🇨🇿

Org handle: ORG-STaN1-RIPE

Network and internet service provider.

RIPE NCCallocated

Announced Prefixes (BGP)

13total

11 IPv42 IPv6

IPv4 Addresses

Allocated (RIR)53,760

Announced (BGP)53,760

IPv6 Addresses

Allocated (RIR)6.3×10²⁹

Announced (BGP)7.1×10²⁹

Prefix Limit (IPv4)

100

Prefix Limit (IPv6)

Country

🇨🇿 CZ

RIR

RIPE NCC

Status

allocated

Allocated

1999-07-28

Routing hygiene

Score 10/100 · Low risk

RPKI ROA coverage

100%

no RPKI invalid prefixes

IRR route objects

100%

no origin mismatches

Hijack signals

0 announced against others' ROAs, 0 own announced by others

Upstreams

diversity 0/100

Only one upstream seen in the AS paths of its routes

Based on 13 announced prefixes, updated daily (2026-10-23). How the score works · RPKI explained

Announced Prefixes

(BGP)13

Prefix	RPKI	IRR	Last Seen
80.78.144.0/20	Valid	RIPE	2026-10-26
88.83.224.0/19	Valid	RIPE	2026-10-26
89.190.40.0/21	Valid	RIPE	2026-10-26
89.190.48.0/20	Valid	RIPE	2026-10-26
109.105.32.0/19	Valid	RIPE	2026-10-26
185.8.188.0/22	Valid	RIPE	2026-10-26
193.17.248.0/22	Valid	RIPE	2026-10-26
195.78.122.0/23	Valid	RIPE	2026-10-26
212.4.128.0/19	Valid	RIPE	2026-10-26
212.96.160.0/19	Valid	RIPE	2026-10-26

1-10 of 13

1 / 2

Allocated Prefixes

(RIR)12

Prefix	Country	RIR	Status
80.78.144.0/20	🇨🇿 CZ	RIPENCC	allocated
88.83.224.0/19	🇨🇿 CZ	RIPENCC	allocated
89.190.40.0/21	🇨🇿 CZ	RIPENCC	allocated
89.190.48.0/20	🇨🇿 CZ	RIPENCC	allocated
109.105.32.0/19	🇨🇿 CZ	RIPENCC	allocated
185.8.188.0/22	🇨🇿 CZ	RIPENCC	allocated
193.17.248.0/22	🇨🇿 CZ	RIPENCC	assigned
195.78.122.0/23	🇨🇿 CZ	RIPENCC	assigned
212.4.128.0/19	🇨🇿 CZ	RIPENCC	allocated
212.96.160.0/19	🇨🇿 CZ	RIPENCC	allocated

1-10 of 12

1 / 2

All 13 announced prefixes of AS12570 →

Downstream Customers(3)

ASN	Name
AS25192	🇨🇿CZNIC-AS CZ.NIC, z.s.p.o.
AS200070	🇨🇿CZNIC-AS2 CZ.NIC, z.s.p.o.
AS211334	🇨🇿Master_IT_Technologies-2 MASTER IT Technologies, a.s.

BGP Neighbours

(seen in AS paths)

Upstreams (1)

Networks AS12570 hands its own prefixes to: transit providers, or peers at an exchange.

AS16246AS16246 O2 Czech Republic, A.S13

Downstreams (9)

Networks whose own prefixes AS12570 passes on: usually its customers.

AS213354International Hosting Solutions INTERNATIONAL HOSTING SOLUTIONS LLP7
AS51424ASAGNET Jiri Sperl4
AS197798NET CONNECT Net Connect S.R.O2
AS204886Metro Hu Metropolitni Sit Humpolec Spol. S R.O2
AS25192CZNIC CZ.NIC, Z.S.P.O1
AS47941REDHAT Red Hat1
AS196815LANSERVIS LAN Servis S.R.O1
AS198620Bralu Jurjanu Biedriba Bralu Jurjanu Biedriba1
AS211334Master IT Technologies 2 MASTER IT Technologies, A.S1

Transfer History

Registry transfers of AS12570 between organisations.

AS12570M&A · 2024-06-20
Nej.cz s.r.o.
RIPE NCC
→
O2 Czech Republic, a.s.
RIPE NCC
AS12570M&A · 2022-03-24
itself s.r.o.
RIPE NCC
→
Nej.cz s.r.o.
RIPE NCC

Date	Resource	From	To	Type
2024-06-20	AS12570	Nej.cz s.r.o. RIPE NCC	O2 Czech Republic, a.s. RIPE NCC	M&A
2022-03-24	AS12570	itself s.r.o. RIPE NCC	Nej.cz s.r.o. RIPE NCC	M&A

ASPA

No ASPA0 upstreams, 3 downstreams

Listed as Upstream Provider by

3 ASNs

View full ASPA details →

Abuse Contact

External Links

RIPE Whois RIPEstat

Learn more

What is an ASN?Autonomous systems, ASN ranges and how they are assigned
RPKI and route origin validationWhat the RPKI badges on the prefix list mean
How to run an ASPA checkVerify the upstream providers listed above
IPv4 transfers in the RIPE NCC regionMonthly volume and the latest registry transfers
ASN data in AI agents and SIEMMCP server and API integrations

API

Open

GEThttps://api.ipctl.io/v1/asn/12570

Returns ASN details, announced prefixes, and BGP routing data.

curl -s "https://api.ipctl.io/v1/asn/12570" | jq