knownports / Ports 16000–16999 / Port 16789
Port16789
cadsisvrThis server provides callable services to mainframe External Security Managers from any TCP/IP platform
IANA has registered port 16789 to cadsisvr on TCP; UDP 16789 is held as reserved. Among the 22 dated assignments in ports 16000–16999, its registration on June 2, 2015 is the latest recorded date. No number is assigned for 122 places below it and 110 above, counting all protocols: the widest gap around any of the 28 assigned numbers in the range.
- 16619
xoms - 45 free
- 16665
axon-tunnel - 16666
vtp - 122 free
- 16789
cadsisvr - 110 free
- 16900
newbay-snc-mc - 49 free
- 16950
sgcip - 40 free
- 16991
intel-rci-mp
Registry entries
| Service | Protocols | Registered | Modified | RFCs | Other specs |
|---|---|---|---|---|---|
cadsisvr | TCP | Jun 2, 2015 | Mar 29, 2023 | — | — |
Where it sits in the registry
Port 16789 is one of 28 numbers with an assignment in ports 16000–16999 (2.8% of the range). Nine other numbers in the range are assigned on exactly the same transport, TCP. Its first recorded registration, June 2, 2015, is the most recent of the 22 dates recorded in the range. IANA last modified the entry on March 29, 2023, eight years after the first recorded registration. No other number in the registry shares that modification date.
Status on each protocol
| Protocol | On port 16789 | Other numbers with the same status | Nearest with the same status |
|---|---|---|---|
| TCP | assigned to cadsisvr | 5,887 | 16900 newbay-snc-mc |
| UDP | reserved | 566 | 16665 axon-tunnel |
| SCTP | no entry | 5,999 | 16900 newbay-snc-mc |
| DCCP | no entry | 6,080 | 16900 newbay-snc-mc |
540 other assigned numbers in the registry have exactly this combination across all four protocols.
The nearest assigned numbers
| Port | Service | Label | Protocols | Registered | Distance |
|---|---|---|---|---|---|
| 16619 | xoms | X509 Objects Management Service | TCP | Sep 8, 2008 | 170 |
| 16665 | axon-tunnel | Reliable multipath data transport for high latencies | TCP | Sep 26, 2014 | 124 |
| 16666 | vtp | Vidder Tunnel Protocol | UDP | Oct 24, 2011 | 123 |
| 16900 | newbay-snc-mc | Newbay Mobile Client Update Service | TCPUDP | Jul 6, 2009 | 111 |
| 16950 | sgcip | Simple Generic Client Interface Protocol | TCPUDP | — | 161 |
| 16991 | intel-rci-mp | — | TCPUDP | — | 202 |