SSL certificates

Download the TLS certificates used by the Ghandi messaging gateway APIs, including fingerprints and the CA chain.

TLS certificates for the LINK Mobility DACH messaging gateway (SMS). Each file is issued to the geo.{protocol}.api.linkmobility.de name and is also valid for Hamburg (ham), Frankfurt (fra), and pre-production (pre-ham, pre-fra) hostnames.

You only need one PEM per protocol, plus the CA chain below, on clients that pin or verify the gateway TLS identity.


These certificates are valid until 23 March 2027. LINK Mobility will notify customers before a rotation.

Gateway certificates

One PEM per protocol. Each file covers the geo, Hamburg, Frankfurt, and pre-production hostnames.

Valid until 23 March 2027

ProtocolHostnamesFingerprintsDownload
SMPP

geo.smpp.api.linkmobility.de

  • geo.smpp.api.linkmobility.de
  • fra.smpp.api.linkmobility.de
  • ham.smpp.api.linkmobility.de
  • pre-fra.smpp.api.linkmobility.de
  • pre-ham.smpp.api.linkmobility.de

Fingerprint

A6:B7:70:83:F5:2C:61:A6:4A:D3:32:48:7D:57:72:48:8C:4D:16:08
PEM
HTTP

geo.http.api.linkmobility.de

  • geo.http.api.linkmobility.de
  • fra.http.api.linkmobility.de
  • ham.http.api.linkmobility.de
  • pre-fra.http.api.linkmobility.de
  • pre-ham.http.api.linkmobility.de

Fingerprint

8B:EF:45:86:CE:4A:C4:3B:90:D4:8A:C1:C3:A4:1E:42:3A:A7:BB:7E
PEM
UCP

geo.ucp.api.linkmobility.de

  • geo.ucp.api.linkmobility.de
  • fra.ucp.api.linkmobility.de
  • ham.ucp.api.linkmobility.de
  • pre-fra.ucp.api.linkmobility.de
  • pre-ham.ucp.api.linkmobility.de

Fingerprint

16:4B:59:56:2B:F9:E3:26:2A:56:8F:21:D4:B9:55:56:A9:73:D2:80
PEM
REST

geo.rest.api.linkmobility.de

  • geo.rest.api.linkmobility.de
  • fra.rest.api.linkmobility.de
  • ham.rest.api.linkmobility.de
  • pre-fra.rest.api.linkmobility.de
  • pre-ham.rest.api.linkmobility.de

Fingerprint

3F:17:7C:7E:2A:6E:4F:D4:B6:A3:6F:2C:0B:FF:02:F6:7B:A0:16:74
PEM
SMTP

geo.smtp.api.linkmobility.de

  • geo.smtp.api.linkmobility.de
  • fra.smtp.api.linkmobility.de
  • ham.smtp.api.linkmobility.de
  • pre-fra.smtp.api.linkmobility.de
  • pre-ham.smtp.api.linkmobility.de

Fingerprint

F3:30:76:01:44:76:B7:A3:19:DE:E8:5B:04:2B:F8:BF:33:11:4F:59
PEM
Certification authority chain
Install this chain alongside every gateway certificate listed above.
Download

If you need help installing these certificates, contact your LINK Mobility support team.