Data as of Nov 9, 2026
77.73.245.0/24
1 residential-proxy exit · 30 daysIWB Industrielle Werke Basel
Residential-proxy exits
Proxy exits
1
0.39% of its addresses · 30 days
Providers
2
selling exits here
Oct 10, 2026 – Nov 8, 2026
Exits seen per day
2 observations
Proxy providers listing exits
- EnigmaProxy
- NovaProxy
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 |
|---|---|---|---|---|---|---|
| 77.73.240.0/21 | 2,048 | CH-IWB-20070402 | IWB Industrielle Werke Basel (ORG-IA673-RIPE) · CH | ALLOCATED PA | Apr 2, 2007 | abuse@ |
| └ 77.73.245.64/28 | 16 | NET-THEATERBASEL-IPv4-PA | Theatergenossenschaft Basel | ASSIGNED PA | Mar 20, 2012 | abuse@ via CH-IWB-20070402 |
| └ 77.73.245.96/27 | 32 | IWB-SYMWEB-WAN1 | Dynamic Customer Pool | LIR-PARTITIONED PA | May 27, 2026 | abuse@ via CH-IWB-20070402 |
| └ 77.73.245.160/28 | 16 | NET-METEOBLUE-IPv4-PA | Meteoblue AG | ASSIGNED PA | Feb 1, 2013 | abuse@ via CH-IWB-20070402 |
| └ 77.73.245.184/29 | 8 | NET-IFRB-IPv4-PA | Industriefeuerwehr Regio Basel | ASSIGNED PA | Oct 15, 2026 | abuse@ via CH-IWB-20070402 |
| └ 77.73.245.192/29 | 8 | NET-HELVETIA-IPv4-PA | Helvetia Schweizerische Immobilienbewirtschaftung Basel | ASSIGNED PA | Jul 26, 2013 | abuse@ via CH-IWB-20070402 |
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 | |
|---|---|---|---|---|
| Residential | 208 | 81% | 4 | |
| Business | 48 | 19% | 4 |
Network & registry
Announced by
Covering announcement 77.73.240.0/21
- Prefix
- 77.73.240.0/21
- Announced by
- AS43284 IWB Industrielle Werke Basel
- Type
- Residential
- Proxy exits
- 2
- RPKI
- RPKI valid
- Netname
- CH-IWB-20070402
- Registrant
- IWB Industrielle Werke Basel
- RIR
- RIPE NCC
Origin network
AS43284
CH
- Name
- IWB Industrielle Werke Basel
- Type
- Internet provider
- Registered
- Jul 9, 2007
- Domain
- iwb.ch
- Website
- telekom.iwb.ch/
- Industry
- Internet Service Provider (ISP)
- Spamhaus ASN-DROP
- not listed
Routing timeline
Who has announced 77.73.240.0/21
77.73.240.0/21
Routing history
- Pattern
- Stable
- First seen
- Aug 2007
- Current origin since
- Aug 2007 · 19 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 77.73.240.0/21 | AS43284 | /21 | RIPE | RPKI valid |
IRR
Route objects on 77.73.240.0/21
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS43284 | RIPE | IWB Telekom IPv4 Aggregate | IWB-MNT | Jul 13, 2026 |
Whois
Registration for this announcement
- Range
- 77.
73. 240. 0/ 21 - Netname
- CH-IWB-20070402
- Registrant
- IWB Industrielle Werke Basel
- Registrant country
- CH
- Organization
- IWB Industrielle Werke Basel (ORG-IA673-RIPE)
- Org country
- CH
- Type
- ALLOCATED PA
- Created
- Apr 2, 2007
- Updated
- Jul 20, 2026
- Maintainer
- RIPE-NCC-HM-MNT
- RIR
- RIPE NCC
- Country
- CH
- Delegated
- Apr 2, 2007
- Status
- assigned
Report abuse
Abuse contact
- abuse@
iwb. ch - Name
- Abuse-C Role
- Handle
- AR14326-RIPE