Data as of Nov 7, 2026
178.21.187.0/24
No anonymizer space · no proxy exits in 30 daysTFnet s.r.o.
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 178.21.184.0/21 since Jun 2016 | AS202895 | Residential | 16 | TFnet 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 |
|---|---|---|---|---|---|---|
| 178.21.184.0/21 | 2,048 | CZ-TFNETSRO-20100323 | TFnet s.r.o. (ORG-TS79-RIPE) · CZ | ALLOCATED PA | Mar 23, 2010 | abuse@ |
| └ 178.21.184.0/22 | 1,024 | TFnet-customers | TFnet s.r.o. | ASSIGNED PA | Jun 25, 2010 | abuse@ via CZ-TFNETSRO-20100323 |
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
Registry
Holder
- Organization
- TFnet s.r.o.
- Handle
- ORG-TS79-RIPE
- Range
- 178.
21. 184. 0/ 21 - Registration type
- ALLOCATED PA
- Record created
- Mar 23, 2010
Origin network
AS202895
CZ
- Name
- TFnet s.r.o.
- Type
- Internet provider
- Registered
- May 9, 2016
- Domain
- tfnet.cz
- Website
- www.tfnet.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
- Feb 2026
- Current origin since
- Feb 2026 · 9 mo
- Origin networks
- 1
Whois
Registration for this announcement
- Range
- 178.
21. 184. 0/ 22 - Netname
- TFnet-customers
- Registrant
- TFnet s.r.o.
- Registrant country
- CZ
- Organization
- TFnet s.r.o.
- Org country
- CZ
- Type
- ASSIGNED PA
- Created
- Jun 25, 2010
- Updated
- Jun 25, 2010
- Maintainer
- TFNET-MNT
- RIR
- RIPE NCC
- Country
- CZ
- Delegated
- Mar 23, 2010
- Status
- assigned
Report abuse
Abuse contact
- abuse@
tfnet. cz - Name
- Abuse-C Role
- Handle
- AR13705-RIPE