HomeASN LookupAS2852

AS2852

🇨🇿

CESNET2 CESNET z.s.p.o.ORG-CA9-RIPE

RIPENCCallocatedASPA Published
Announced Prefixes (BGP)
29total
27 IPv42 IPv6
IPv4 Addresses ⓘ
Allocated (RIR)850,368
Announced (BGP)858,368
IPv6 Addresses ⓘ
Allocated (RIR)6.3×10^29
Announced (BGP)6.3×10^29
Prefix Limit (IPv4)
1,000
Prefix Limit (IPv6)
10
Country
🇨🇿 CZ
RIR
RIPENCC
Status
allocated
Allocated
12/20/1993

Announced Prefixes

(BGP)29
|
Prefix
RPKI
IRR
Last Seen
78.128.128.0/17
 Valid
RADBRIPE
5/23/2026
146.102.0.0/16
 Valid
RADBRIPE
5/23/2026
147.32.0.0/16
 Valid
RADBRIPE
5/23/2026
147.33.0.0/16
 Valid
RADBRIPE
5/23/2026
147.228.0.0/16
 Valid
RADBRIPE
5/23/2026
147.230.0.0/16
 Valid
RADBRIPE
5/23/2026
147.231.0.0/16
 Valid
RADBRIPE
5/23/2026
147.231.25.0/24
 Valid—5/23/2026
147.251.0.0/16
 Valid
RADBRIPE
5/23/2026
158.194.0.0/16
 Valid
RADBRIPE
5/23/2026
1–10 of 29
1 / 3

Allocated Prefixes

(RIR)29
Prefix
Country
RIR
Status
78.128.128.0/17🇨🇿 CZRIPENCCallocated
146.102.0.0/16🇨🇿 CZRIPENCCassigned
147.32.0.0/16🇨🇿 CZRIPENCCassigned
147.33.0.0/16🇨🇿 CZRIPENCCassigned
147.228.0.0/16🇨🇿 CZRIPENCCassigned
147.230.0.0/16🇨🇿 CZRIPENCCassigned
147.231.0.0/16🇨🇿 CZRIPENCCassigned
147.251.0.0/16🇨🇿 CZRIPENCCassigned
158.194.0.0/16🇨🇿 CZRIPENCCassigned
158.196.0.0/16🇨🇿 CZRIPENCCassigned
1–10 of 29
1 / 3

Upstream Providers(8)

ASNName
AS1853🇦🇹ACOnet - ACONET
AS2607🇸🇰SANET Zdruzenie pouzivatelov Slovenskej akademickej datovej siete SANET
AS6461🇺🇸ZAYO-6461 - Zayo Bandwidth
AS6762🇮🇹SEABONE-NET TELECOM ITALIA SPARKLE S.p.A.
AS6939🇺🇸HURRICANE - Hurricane Electric LLC
AS20965🇳🇱GEANT GEANT Vereniging
AS21320🇳🇱GEANT_IAS_VRF GEANT Vereniging
AS60606🇨🇿Blindspot PRO-ZETA a.s.

Downstream Customers(2)

ASNName
AS2605🇨🇿CESNET CESNET z.s.p.o.
AS51727🇨🇿SKODAPOWER-AS Doosan Skoda Power s.r.o
ASPA
Published8 upstreams, 2 downstreams
Authorized Upstream Providers
AS1853AS2607AS6461AS6762AS6939AS20965AS21320AS60606
Expires May 31, 2026
Listed as Upstream Provider by
2 ASNs
View full ASPA details →
Abuse Contact
+31205354444
External Links
RIPE WhoisHurricane Electric BGPRIPEstatPeeringDB
API
Open
GEThttps://api.ipctl.io/v1/asn/2852

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

curl -s "https://api.ipctl.io/v1/asn/2852" | jq