Data as of Nov 7, 2026
212.87.253.0/24
No anonymizer space · no proxy exits in 30 daysPolitechnika Czestochowska
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 |
|---|---|---|---|---|---|---|
| 212.87.224.0/19 | 8,192 | PL-CZESTMAN-20000519 | Politechnika Czestochowska (ORG-PC2-RIPE) · PL | ALLOCATED PA | — | abuse@ |
| └ 212.87.253.0/24 | 256 | UJD-EDUROAM-PL-253 | Uniwersytet Jana Dlugosza w Czestochowie (ORG-AJD1-RIPE) · PL | ASSIGNED PA | Oct 27, 2023 | abuse@ |
Network & registry
Registry
Holder
- Organization
- Politechnika Czestochowska
- Handle
- ORG-PC2-RIPE
- Range
- 212.
87. 224. 0/ 19 - Registration type
- ALLOCATED PA
Origin network
AS15373
PL
- Name
- Politechnika Czestochowska
- Type
- Education
- Registered
- Jun 7, 2000
- Domain
- pcz.pl
- Industry
- Colleges, Universities, and Professional Schools
- Spamhaus ASN-DROP
- not listed
Routing timeline
Who has announced this prefix
Summary
Routing history
- Pattern
- Stable
- First seen
- Oct 2023
- Current origin since
- Oct 2023 · 3.0 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 212.87.253.0/24 | AS15373 | /24 | RIPE | RPKI valid |
IRR
Route objects on the exact prefix
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS15373 | RIPE | The networks of educational, scientific, governmental, health, cultural, religious, research subjects Metropolitan Area Network CzestMAN, Czestochowa, POLAND | PL-CZESTMAN-MNT | Oct 27, 2023 |
Whois
Registration for this announcement
- Range
- 212.
87. 253. 0/ 24 - Netname
- UJD-EDUROAM-PL-253
- Registrant
- Uniwersytet Jana Dlugosza w Czestochowie
- Registrant country
- PL
- Organization
- Uniwersytet Jana Dlugosza w Czestochowie (ORG-AJD1-RIPE)
- Org country
- PL
- Type
- ASSIGNED PA
- Created
- Oct 27, 2023
- Updated
- Oct 27, 2023
- Maintainer
- PL-CZESTMAN-MNT
- RIR
- RIPE NCC
- Country
- PL
- Delegated
- May 19, 2000
- Status
- assigned
Report abuse
Abuse contact
- abuse@
ujd. edu. pl - Name
- AJD-PL Operations
- Handle
- AO4511-RIPE