knownports / Ports 28000–30999 / Port 30400
Port30400
gs-realtimeGroundStar RealTime System
IANA has registered port 30400 to gs-realtime on TCP; UDP 30400 is held as reserved. Among the 25 dated assignments in ports 28000–30999, its registration on August 10, 2017 is the fifth most recent. No number is assigned for 139 places below it and 431 above, counting all protocols: the second widest gap around any of the 25 assigned numbers in the range.
- 30004
amicon-fpsu-s - 95 free
- 30100
rwp - 159 free
- 30260
kingdomsonline - 139 free
- 30400
gs-realtime - 431 free
- 30832
samsung-disc - 106 free
- 30939
dilithium3 - 59 free
- 30999
ovobs
Registry entries
| Service | Protocols | Registered | Modified | RFCs | Other specs |
|---|---|---|---|---|---|
gs-realtime | TCP | Aug 10, 2017 | Dec 13, 2017 | — | — |
Where it sits in the registry
Port 30400 is one of 25 numbers with an assignment in ports 28000–30999 (0.8% of the range). Seven other numbers in the range are assigned on exactly the same transport, TCP. Of the 25 numbers in the range with a recorded registration date, 20 were registered before it (August 10, 2017) and four after. IANA last modified the entry on December 13, 2017. No other number in the registry shares that modification date.
Status on each protocol
| Protocol | On port 30400 | Other numbers with the same status | Nearest with the same status |
|---|---|---|---|
| TCP | assigned to gs-realtime | 5,887 | 30260 kingdomsonline |
| UDP | reserved | 566 | 30100 rwp |
| SCTP | no entry | 5,999 | 30260 kingdomsonline |
| DCCP | no entry | 6,080 | 30260 kingdomsonline |
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 |
|---|---|---|---|---|---|
| 30004 | amicon-fpsu-s | Amicon FPSU-IP VPN | UDP | Apr 25, 2013 | 396 |
| 30100 | rwp | Remote Window Protocol | TCPSCTP | May 20, 2015 | 300 |
| 30260 | kingdomsonline | Kingdoms Online (CraigAvenue) | TCPUDP | Aug 18, 2009 | 140 |
| 30832 | samsung-disc | Samsung Convergence Discovery Protocol | UDP | May 29, 2013 | 432 |
| 30939 | dilithium3 | Persistent peer-to-peer connections for block propagation, transaction relay, and BFT consensus message exchange. | TCPUDP | May 28, 2026 | 539 |
| 30999 | ovobs | OpenView Service Desk Client | TCPUDP | May 2006 | 599 |