AS5610 O2-CZECH-REPUBLIC O2 Czech Republic, a.s.
🇨🇿Org handle: ORG-STaN1-RIPE
RIPE NCCallocated
Announced Prefixes (BGP)
72total
67 IPv45 IPv6
IPv4 Addresses
Allocated (RIR)1.6M
Announced (BGP)2.3M
IPv6 Addresses
Allocated (RIR)8.7×10²⁹
Announced (BGP)9.5×10²⁹
Prefix Limit (IPv4)
2,000
Prefix Limit (IPv6)
20
Country
🇨🇿 CZRIR
RIPE NCCStatus
allocated
Allocated
1996-04-25
Routing hygiene
Score 5/100 · Low riskRPKI ROA coverage
95.8%
no RPKI invalid prefixes
IRR route objects
100%
no origin mismatches
Hijack signals
0
0 announced against others' ROAs, 0 own announced by others
Upstreams
7
diversity 63/100
- No significant routing hygiene issues found
Based on 72 announced prefixes, updated daily (2026-10-26). How the score works · RPKI explained
Listed on the threat map (2026-10-26)
Large hosting providers appear because attackers rent their servers, not necessarily because of the operator.
Announced Prefixes
(BGP)72|
Prefix | RPKI | IRR | Last Seen |
|---|---|---|---|
| Valid | RIPE | - | |
| Valid | RIPE | - | |
| Valid | RIPE | - | |
| Valid | Other IRRRIPE | - | |
| Valid | RIPE | - | |
| Valid | Other IRRRIPE | - | |
| Valid | RIPE | - | |
| Valid | RIPE | - | |
| Valid | RIPE | - | |
| Valid | RIPE | - |
1-10 of 72
1 / 8
Allocated Prefixes
(RIR)42Prefix | Country | RIR | Status |
|---|---|---|---|
| 37.188.128.0/17 | 🇨🇿 CZ | RIPENCC | allocated |
| 80.188.0.0/16 | 🇨🇿 CZ | RIPENCC | allocated |
| 81.90.160.0/20 | 🇨🇿 CZ | RIPENCC | allocated |
| 81.90.168.0/24 | 🇨🇿 CZ | RIPE | assigned |
| 83.69.32.0/19 | 🇨🇿 CZ | RIPENCC | allocated |
| 83.208.0.0/16 | 🇨🇿 CZ | RIPENCC | allocated |
| 85.70.0.0/15 | 🇨🇿 CZ | RIPENCC | allocated |
| 85.160.0.0/15 | 🇨🇿 CZ | RIPENCC | allocated |
| 85.193.0.0/18 | 🇨🇿 CZ | RIPENCC | allocated |
| 88.83.160.0/19 | 🇨🇿 CZ | RIPENCC | allocated |
1-10 of 42
1 / 5
All 72 announced prefixes of AS5610 →
BGP Neighbours
(seen in AS paths)Upstreams (5)
Networks AS5610 hands its own prefixes to: transit providers, or peers at an exchange.
Downstreams (36)
Networks whose own prefixes AS5610 passes on: usually its customers.
- AS42908CZ NORDICTELECOMREGIONAL O2 Czech Republic, A.S44
- AS16246AS16246 O2 Czech Republic, A.S15
- AS43037SEZNAM CZ Seznam.Cz, A.S9
- AS211274QCZ Quadruple A.S5
- AS28952O2BSSK O2 Business Services, A.S4
- AS35096ALEFNULA Alef Nula A.S3
- AS197353INGMS CZ NN Management Services, S.R.O3
- AS205233KBCGROUP CSOBCZ KBC GLOBAL SERVICES NV3
- AS206613TIPSPORT NET Tipsport.Net A.S3
- AS215711MZE The Ministry Of Agriculture Of The Czech Republic3
- AS38952MAFRA CZ MAFRA, A.S2
- AS198282Cablenet CAH Building S.R.O2
- AS198605AVAST DC AVAST Software S.R.O2
- AS203411FORTUNA GAME PUB FORTUNA GAME A.S2
- AS204372PPFBANKA PPF Banka A.S2
- AS208712CENDIS CENDIS, S.P2
- AS2571DHL Information Services (Europe) S.R.O1
- AS8518RFERL RFE/RL1
- AS13105LUKOIL INFORM1
- AS15380ANSCZ Air Navigation Services Of The Czech Republic, State Enterprise1
- AS21241MUZO Global Payments Europe, S.R.O1
- AS21942-1
- AS25321G4S NET Brink'S Cash Solutions (CZ), A.S1
- AS39174RRD Walstead Krakow Sp. Z O.O1
- AS43757ICZAS CZ ICZ A.S1
- AS43866ALTRON A.S1
- AS48451PRE Prazska Energetika, A.S1
- AS50948Amdocs Uk Dc AMDOCS (UK) LIMITED1
- AS62083FIO BANKA Fio Banka, A.S1
- AS197920SKODA ICT SKODA ICT S.R.O1
- AS198991TV NOVA SRO TV Nova Sro1
- AS199059MauriceWard Maurice Ward & ., S.R.O1
- AS201163KB CZ Komercni Banka, A.S1
- AS204172TTCINFRA CZ TTC TELEKOMUNIKACE S.R.O1
- AS206683MSIC Moravskoslezske Inovacni Centrum Ostrava, A.S1
- AS208950ASEZPADASRO Ezpada S.R.O1
Abuse Contact
External Links
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 https://api.ipctl.io/v1/asn/5610Returns ASN details, announced prefixes, and BGP routing data.
curl -s "https://api.ipctl.io/v1/asn/5610" | jq