Data as of Nov 14, 2026
91.143.103.0/28
No anonymizer space · no proxy exits in 30 daysCitycom Telekommunikation GmbH
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 |
|---|---|---|---|---|---|---|
| 91.143.96.0/20 | 4,096 | AT-GSTW-20061031 | Citycom Telekommunikation GmbH (ORG-GSA1-RIPE) · AT | ALLOCATED PA | Oct 31, 2006 | abuse@ |
| └ 91.143.103.0/28 | 16 | ZWACH2-AT-NET-01 | Zwach Immobilien GmbH | ASSIGNED PA | Oct 29, 2026 | abuse@ via AT-GSTW-20061031 |
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 91.143.96.0/20
- Prefix
- 91.143.96.0/20
- Announced by
- AS29056 Citycom Telekommunikation GmbH
- Type
- Business
- Proxy exits
- 1
- RPKI
- RPKI valid
- Netname
- AT-GSTW-20061031
- Registrant
- Citycom Telekommunikation GmbH
- RIR
- RIPE NCC
Origin network
AS29056
AT
- Name
- Citycom Telekommunikation GmbH
- Type
- Internet provider
- Registered
- May 21, 2003
- Domain
- citycom-austria.com
- Website
- www.citycom-austria.com
- Industry
- Internet Service Provider (ISP)
- Spamhaus ASN-DROP
- not listed
Routing timeline
Who has announced 91.143.96.0/20
91.143.96.0/20
Routing history
- Pattern
- Stable
- First seen
- Nov 2006
- Current origin since
- Nov 2006 · 20 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 91.143.96.0/20 | AS29056 | /24 | RIPE | RPKI valid |
IRR
Route objects on 91.143.96.0/20
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS29056 | RIPE | Citycom Telekommunikation GmbH | CITYCOM-AT-MNT | Feb 5, 2026 |
Whois
Registration for this announcement
- Range
- 91.
143. 96. 0/ 20 - Netname
- AT-GSTW-20061031
- Registrant
- Citycom Telekommunikation GmbH
- Registrant country
- AT
- Organization
- Citycom Telekommunikation GmbH (ORG-GSA1-RIPE)
- Org country
- AT
- Type
- ALLOCATED PA
- Created
- Oct 31, 2006
- Updated
- Feb 12, 2026
- Maintainer
- RIPE-NCC-HM-MNT
- RIR
- RIPE NCC
- Country
- AT
- Delegated
- Oct 31, 2006
- Status
- assigned
Report abuse
Abuse contact
- abuse@
grazkom. at - Name
- Citycom Telekommunikation RIPE team
- Handle
- CA5459-RIPE