193.17.76.17
An address in Zürich, Zurich, Switzerland, used by Mittelschul- und Berufsbildungsamt Kanton Zuerich, announced by NTS workspace AG (AS15576). It's a VPN exit of Sophos Connect VPN, hosting space, a mail server on port 587, and a web server on port 443.
Summary
Geolocation
Where the address is, and what that place uses.
- City
- Zürich
- Region
- Zurich
- Postal code
- 8000
- Country
- Switzerland
- Continent
- Europe
- Coordinates
- 47.3667, 8.5500
- Timezone
- Europe/Zurich
Ownership
Who holds the address: the AS announcing it, the registry record, the abuse contact and its name in DNS.
- Company
- Mittelschul- und Berufsbildungsamt Kanton Zuerich
- Domain
- gyselroth.net
- Type
- Business
- Registered in
- Switzerland
- AS number
- AS15576
- Name
- NTS workspace AG
- Prefix
- 193.17.76.0/24
- RPKI
- Valid
- Type
- Hosting
- Domain
- nts.ch
- Registered in
- Switzerland
- Name
- Mittelschul- und Berufsbildungsamt Kanton Zuerich
- Network name
- KZU-CH-NET
- Organization
- ORG-MUB2-RIPE
- Status
- ASSIGNED PI
- Registry
- RIPE NCC
- Domain
- gyselroth.net
- Abuse
- abuse@gyselroth.net
- Name
- Gyselroth GmbH
- abuse@gyselroth.net
- Address
- CH-8047 Zürich
- Network
- 193.17.76.0-193.17.76.255
Anonymity
Whether the address hides someone else: a VPN, Tor, a relay, a proxy pool, or a hosting range.
Network
What kind of network it is on: a mobile carrier, a satellite operator, an anycast service, a CDN edge.
Services
What our own internet-wide measurement found listening on it.
- Port
- 587
- Banner
- 220 mta.tam.ch ESMTP Postfix
- Greeting
- Completed
- First seen
- 2026-09-17
- Last seen
- 2026-09-19
- 443 status
- 200
- 443 server
- xxxx
- 443 title
- VPN Portal
- 443 TLS
- TLSv1.2
- 443 certificate
- *.tam.ch
- 443 issuer
- C=CH, O=SwissSign AG, CN=SwissSign RSA TLS DV ICA 2022 - 1
- 443 browser-trusted
- Yes
- 443 seen
- 2026-08-06 to 2026-10-30
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