Data as of Nov 9, 2026
213.155.171.0/24
No anonymizer space · no proxy exits in 30 daysOpto-Tech Grzegorz Wroblewski · space held by Zachodniopomorski Uniwersytet Technologiczny w Szczecinie, Akademickie Centrum Informatyki
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 213.155.160.0/19 since May 2005 | AS13119 | Business | 50 2 always on | Zachodniopomorski Uniwersytet Technologiczny w Szczecinie, Akademickie Centrum Informatyki |
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 |
|---|---|---|---|---|---|---|
| 213.155.160.0/19 | 8,192 | PL-AMSK-20010423 | Zachodniopomorski Uniwersytet Technologiczny w Szczecinie, Akademickie Centrum Informatyki (ORG-AMAN1-RIPE) · PL | ALLOCATED PA | — | abuse@ |
| └ 213.155.170.0/23 | 512 | Opto-tech | OPTO-TECH Grzegorz Wróblewski | SUB-ALLOCATED PA | May 17, 2019 | abuse@ via PL-AMSK-20010423 |
| └ 213.155.171.0/24 | 256 | ErathiaNET | www.erathia.org, Szczecin. Poland | ASSIGNED PA | Dec 5, 2001 | abuse@ via Opto-tech |
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 213.155.170.0/23
- Prefix
- 213.155.170.0/23
- Announced by
- AS211025 Opto-Tech Grzegorz Wroblewski
- Type
- Residential
- RPKI
- RPKI valid
- Netname
- Opto-tech
- Registrant
- OPTO-TECH Grzegorz Wróblewski
- RIR
- RIPE NCC
Registry
Holder
- Organization
- Zachodniopomorski Uniwersytet Technologiczny w Szczecinie, Akademickie Centrum Informatyki
- Handle
- ORG-AMAN1-RIPE
- Range
- 213.
155. 160. 0/ 19 - Registration type
- ALLOCATED PA
- Reallocated to
- OPTO-TECH Grzegorz Wróblewski
- Reallocated range
- 213.
155. 170. 0/ 23 - Reallocation type
- SUB-ALLOCATED PA
- Reallocated
- May 17, 2019
Origin network
AS211025
PL
- Name
- Opto-Tech Grzegorz Wroblewski
- Type
- Internet provider
- Registered
- Jul 16, 2021
- Domain
- opto-tech.pl
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
213.155.170.0/23
Routing history
- Pattern
- Stable
- First seen
- Feb 2022
- Current origin since
- Feb 2022 · 4.7 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 213.155.170.0/23 | AS211025 | /23 | RIPE | RPKI valid |
| 213.155.160.0/19 | AS13119 | /19 | RIPE | Another network |
IRR
Route objects on 213.155.170.0/23
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS211025 | RIPE | ACI-MNT-POLAND | Feb 15, 2022 |
Whois
Registration for this announcement
- Range
- 213.
155. 170. 0/ 23 - Netname
- Opto-tech
- Registrant
- OPTO-TECH Grzegorz Wróblewski
- Registrant country
- PL
- Organization
- OPTO-TECH Grzegorz Wróblewski
- Org country
- PL
- Type
- SUB-ALLOCATED PA
- Created
- May 17, 2019
- Updated
- May 17, 2019
- Maintainer
- ACI-MNT-POLAND
- RIR
- RIPE NCC
- Country
- PL
- Delegated
- Apr 23, 2001
- Status
- assigned
Report abuse
Abuse contact
- abuse@
man. szczecin. pl - Name
- Abuse Department
- Handle
- AD10876-RIPE