Data as of Nov 9, 2026
185.116.51.0/24
No anonymizer space · no proxy exits in 30 daysCEZNET s.r.o.
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Holder | RPKI |
|---|---|---|---|---|
| 185.116.48.0/22 since Feb 2017 | AS204064 | Residential | CEZNET s.r.o. |
Registrations in this block
The registry's network records over the announcement: those covering it, widest first, then every record inside it, under its parent.
| Range | Addresses | Netname | Holder | Type | Created | Abuse contact |
|---|---|---|---|---|---|---|
| 185.116.48.0/22 | 1,024 | CZ-CEZNET21-20150907 | CEZNET s.r.o. (ORG-TBS13-RIPE) · CZ | ALLOCATED PA | Oct 17, 2023 | dohled@ |
| └ 185.116.51.0/24 | 256 | ISPALLIANCE_ | ISP Alliance (ORG-IA1793-RIPE) · CZ | ASSIGNED PA | Aug 22, 2020 | noc@ |
Network & registry
Registry
Holder
- Organization
- CEZNET s.r.o.
- Handle
- ORG-TBS13-RIPE
- Range
- 185.
116. 48. 0/ 22 - Registration type
- ALLOCATED PA
- Record created
- Oct 17, 2023
Origin network
AS204064
CZ
- Name
- CEZNET s.r.o.
- Type
- Internet provider
- Registered
- Sep 3, 2015
- Domain
- ceznet.cz
- Industry
- Internet Service Provider (ISP)
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
Summary
Routing history
- Pattern
- Stable
- First seen
- May 2021
- Current origin since
- May 2021 · 5.5 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 185.116.51.0/24 | AS204064 | /24 | RIPE | RPKI valid |
| 185.116.48.0/22 | AS204064 | /22 | RIPE | Too specific |
IRR
Route objects on the exact prefix
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS47232 not the origin | RIPE | MNT-GRAPESC | Sep 4, 2020 |
Whois
Registration for this announcement
- Range
- 185.
116. 51. 0/ 24 - Netname
- ISPALLIANCE_
CORE - Registrant
- ISP Alliance
- Registrant country
- CZ
- Organization
- ISP Alliance (ORG-IA1793-RIPE)
- Org country
- CZ
- Type
- ASSIGNED PA
- Created
- Aug 22, 2020
- Updated
- Aug 22, 2020
- Maintainer
- MNT-GRAPESC
- RIR
- RIPE NCC
- Country
- CZ
- Delegated
- Sep 7, 2015
- Status
- assigned
Report abuse
Abuse contact
- noc@
ispalliance. cz - Name
- ISPALLIANCE
- Handle
- IA6356-RIPE