103.20.63.190
An address in Hong Kong, Hong Kong, used by Chain, announced by Layerstack Limited (AS133380). It's hosting space, an SSH server on port 22, a mail server on port 587, and a web server on ports 80 and 443.
Summary
Geolocation
Where the address is, and what that place uses.
- City
- Hong Kong
- Postal code
- 999077
- Country
- Hong Kong
- Continent
- Asia
- Coordinates
- 22.2783, 114.1747
- Timezone
- Asia/Hong_Kong
Ownership
Who holds the address: the AS announcing it, the registry record, the abuse contact and its name in DNS.
- AS number
- AS133380
- Name
- Layerstack Limited
- Prefix
- 103.20.63.0/24
- RPKI
- Not found
- Type
- Hosting
- Domain
- layerstack.com
- Registered in
- Hong Kong
- Name
- Chain
- Network name
- chain
- Status
- ALLOCATED NON-PORTABLE
- Registry
- APNIC
- Domain
- layerstack.com
- Name
- ABUSE layerHK
- Address
- Room A03, 22/F, NCB Innovation Centre 888 Lai Chi Kok Road, Cheung Sha Wan, Kowloon, Hong Kong
- Network
- 103.20.63.0-103.20.63.255
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
- 22
- Banner
- SSH-2.0-OpenSSH_7.4
- Host key
- SHA256:fe5967e9d76f0e1c34de280f5d9e0fd5b2639f410a20e118992f0bcde546832d
- Handshake
- Completed
- First seen
- 2026-08-12
- Last seen
- 2026-10-17
- Port
- 587
- Banner
- 220 mail.wellsjpn.com ESMTP Postcow
- Greeting
- Completed
- First seen
- 2026-07-31
- Last seen
- 2026-10-17
- 80 status
- 200
- 80 server
- nginx
- 80 title
- mailcow UI
- 80 seen
- 2026-07-23 to 2026-10-16
- 443 status
- 200
- 443 server
- nginx
- 443 title
- mailcow UI
- 443 TLS
- TLSv1.3
- 443 certificate
- mail.wellsjpn.com
- 443 issuer
- C=US, O=Let's Encrypt, CN=YR2
- 443 browser-trusted
- Yes
- 443 seen
- 2026-07-22 to 2026-10-17
Test the real build first.
An evaluation license puts a full current build in your hands, with no sampling, so you can measure it against your own traffic before anyone talks about terms.