Data as of Nov 4, 2026
78.156.147.0/24
1 residential-proxy exit · 30 daysOptoNet Communication, spol. s.r.o.
Residential-proxy exits
Proxy exits
1
0.39% of its addresses · 30 days
Providers
1
selling exits here
Oct 5, 2026 – Nov 3, 2026
Exits seen per day
2 observations
Proxy providers listing exits
- Shifter
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 |
|---|---|---|---|---|---|---|
| 78.156.128.0/19 | 8,192 | CZ-OPTONET-20070816 | OptoNet Communication, spol. s.r.o. (ORG-OCLS3-RIPE) · CZ | ALLOCATED PA | Aug 16, 2007 | abuse@ |
| └ 78.156.147.0/27 | 32 | CZ-MMJ-ON | IP pool 78.156.147.0/27 for Magistrat Mesta JIhlavy | ASSIGNED PA | May 16, 2012 | abuse@ via CZ-OPTONET-20070816 |
| └ 78.156.147.64/28 | 16 | CZ-MM-ON | IP pool 78.156.147.64/28 | ASSIGNED PA | May 17, 2012 | abuse@ via CZ-OPTONET-20070816 |
| └ 78.156.147.80/29 | 8 | CZ-SYSCORE-ON | IP pool 78.156.147.80/29 for SYSCORE, Pacov, Czech Republic | ASSIGNED PA | May 17, 2012 | abuse@ via CZ-OPTONET-20070816 |
| └ 78. | 40 | CZ-STAMPI-ON | IP pool for STAMPI, Pelhrimov, Czech Republic | ASSIGNED PA | May 17, 2012 | abuse@ via CZ-OPTONET-20070816 |
| └ 78.156.147.128/25 | 128 | CZ-ROWANet_ | IP pool 78.156.147.128/25 for Kraj Vsocina, Jihlava, Czech Republic | ASSIGNED PA | May 27, 2013 | abuse@ via CZ-OPTONET-20070816 |
A contact marked “via” is the registry's: the record names none of its own, so the registry hands down its parent's.
Composition
The types across the prefix's announced space, by addresses.
Announced space
Address share
Announced space
Types across the prefix
256 addresses
| Type | Addresses | Share | Ranges | |
|---|---|---|---|---|
| Business | 224 | 88% | 5 | |
| Internet provider | 32 | 13% | 1 |
Network & registry
Announced by
Covering announcement 78.156.128.0/19
- Prefix
- 78.156.128.0/19
- Announced by
- AS43542 OptoNet Communication, spol. s.r.o.
- Type
- Internet provider
- Proxy exits
- 17
- Always-on exits
- 2
- RPKI
- RPKI valid
- Netname
- CZ-OPTONET-20070816
- Registrant
- OptoNet Communication, spol. s.r.o.
- RIR
- RIPE NCC
Origin network
AS43542
CZ
- Name
- OptoNet Communication, spol. s.r.o.
- Type
- Internet provider
- Registered
- Aug 20, 2007
- Domain
- optonet.cz
- Industry
- Computer and Information Technology
- Spamhaus ASN-DROP
- not listed
Routing timeline
Who has announced 78.156.128.0/19
78.156.128.0/19
Routing history
- Pattern
- Stable
- First seen
- Sep 2007
- Current origin since
- Sep 2007 · 19 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 78.156.128.0/19 | AS43542 | /19 | RIPE | RPKI valid |
IRR
Route objects on 78.156.128.0/19
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS43542 | RIPE | CZ-OPTONET-20070816 | MNT-OPTONET | Sep 13, 2007 |
Whois
Registration for this announcement
- Range
- 78.
156. 128. 0/ 19 - Netname
- CZ-OPTONET-20070816
- Registrant
- OptoNet Communication, spol. s.r.o.
- Registrant country
- CZ
- Organization
- OptoNet Communication, spol. s.r.o. (ORG-OCLS3-RIPE)
- Org country
- CZ
- Type
- ALLOCATED PA
- Created
- Aug 16, 2007
- Updated
- Dec 20, 2016
- Maintainer
- RIPE-NCC-HM-MNT
- RIR
- RIPE NCC
- Country
- CZ
- Delegated
- Aug 16, 2007
- Status
- assigned
Report abuse
Abuse contact
- abuse@
optonet. cz - Name
- ABUSE-C OptoNet Communication
- Handle
- AOC17-RIPE