Data as of Nov 6, 2026
93.91.242.0/24
No anonymizer space · no proxy exits in 30 daysCore4Net, s.r.o.
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 93.91.240.0/20 since Sep 2008 | AS47269 | Residential | 30 4 always on | Core4Net, s.r.o. |
Registrations in this block
The registry's network records over this block, widest first, each under its parent.
| Range | Addresses | Netname | Holder | Type | Created | Abuse contact |
|---|---|---|---|---|---|---|
| 93.91.240.0/20 | 4,096 | CZ-CORE4NET-20080521 | Core4Net, s.r.o. (ORG-CS455-RIPE) · CZ | ALLOCATED PA | May 21, 2008 | abuse@ |
| └ 93.91.242.0/24 | 256 | clients_ | unknown | SUB-ALLOCATED PA | Oct 3, 2016 | abuse@ via CZ-CORE4NET-20080521 |
A contact marked “via” is the registry's: the record names none of its own, so the registry hands down its parent's.
Network & registry
Announced by
Covering announcement 93.91.240.0/22
- Prefix
- 93.91.240.0/22
- Announced by
- AS47269 Core4Net, s.r.o.
- Type
- Residential
- Proxy exits
- 10
- RPKI
- RPKI valid
- Netname
- CZ-CORE4NET-20080521
- Registrant
- Core4Net, s.r.o.
- RIR
- RIPE NCC
Origin network
AS47269
CZ
- Name
- Core4Net, s.r.o.
- Type
- Internet provider
- Registered
- May 27, 2008
- Domain
- core4net.cz
- Industry
- Internet Service Provider (ISP)
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
93.91.240.0/22
Routing history
- Pattern
- Stable
- First seen
- Jan 2015
- Current origin since
- Aug 2016 · 10 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 93.91.240.0/20 | AS47269 | /22 | RIPE | RPKI valid |
IRR
Route objects on 93.91.240.0/22
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS47269 | RIPE | CZ-CORE4NET-1-MNT | Feb 22, 2019 |
Whois
Registration for this announcement
- Range
- 93.
91. 240. 0/ 20 - Netname
- CZ-CORE4NET-20080521
- Registrant
- Core4Net, s.r.o.
- Registrant country
- CZ
- Organization
- Core4Net, s.r.o. (ORG-CS455-RIPE)
- Org country
- CZ
- Type
- ALLOCATED PA
- Created
- May 21, 2008
- Updated
- Feb 13, 2017
- Maintainer
- RIPE-NCC-HM-MNT
- RIR
- RIPE NCC
- Country
- CZ
- Delegated
- May 21, 2008
- Status
- assigned
Report abuse
Abuse contact
- abuse@
core4net. cz - Name
- Abuse-C Role
- Handle
- AR38476-RIPE