Data as of Nov 8, 2026
88.133.255.0/24
No anonymizer space · no proxy exits in 30 daysStadtwerke Konstanz GmbH
Network & registry
Announced by
Covering announcement 88.133.248.0/21
- Prefix
- 88.133.248.0/21
- Announced by
- AS57154 Stadtwerke Konstanz GmbH
- Type
- Residential
- Proxy exits
- 31
- Always-on exits
- 5
- RPKI
- RPKI valid
- Netname
- DE-SW-KONSTANZ-20051028
- Registrant
- Stadtwerke Konstanz GmbH
- RIR
- RIPE NCC
Origin network
AS57154
DE
- Name
- Stadtwerke Konstanz GmbH
- Type
- Internet provider
- Registered
- Aug 5, 2011
- Domain
- konstanz.de
- Website
- www.stadtwerke-konstanz.de
- Industry
- Internet Service Provider (ISP)
- Spamhaus ASN-DROP
- not listed
Routing timeline
Who has announced 88.133.248.0/21
88.133.248.0/21
Routing history
- Pattern
- Stable
- First seen
- Aug 2019
- Current origin since
- Aug 2019 · 7.2 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 88.133.248.0/21 | AS57154 | /24 | RIPE | RPKI valid |
IRR
Route objects on 88.133.248.0/21
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS57154 | RIPE | DE-SWKN-88.133.248.0 | MNT-SWKN | Aug 27, 2019 |
Whois
Registration for this announcement
- Range
- 88.
133. 248. 0/ 21 - Netname
- DE-SW-KONSTANZ-20051028
- Registrant
- Stadtwerke Konstanz GmbH
- Registrant country
- DE
- Organization
- Stadtwerke Konstanz GmbH (ORG-SKG3-RIPE)
- Org country
- DE
- Type
- ALLOCATED PA
- Created
- May 3, 2019
- Updated
- May 3, 2019
- Maintainer
- MNT-SWKN
- RIR
- RIPE NCC
- Country
- DE
- Delegated
- Oct 28, 2005
- Status
- assigned
Report abuse
Abuse contact
- abuse@
tk-bodensee. net - Name
- Stadtwerke Konstanz ISP-Team
- Handle
- SWKN1-RIPE