knownports / Ports 400–499 / Port 445
Port445
microsoft-ds
IANA has registered port 445 to microsoft-ds on TCP and UDP.
Registry entries
| Service | Protocols | Registered | Modified | RFCs | Other specs |
|---|---|---|---|---|---|
microsoft-ds | TCPUDP | — | — | — | — |
Where it sits in the registry
Port 445 is one of 100 numbers with an assignment in ports 400–499 (100.0% of the range). 98 other numbers in the range are assigned on exactly the same transports, TCP and UDP, the usual pattern for older entries. The registry records no registration date for it, as for 95 other numbers in the range; dates were recorded mainly from 2002 on.
Status on each protocol
| Protocol | On port 445 | Other numbers with the same status | Nearest with the same status |
|---|---|---|---|
| TCP | assigned to microsoft-ds | 5,887 | 444 snpp |
| UDP | assigned to microsoft-ds | 5,500 | 444 snpp |
| SCTP | no entry | 5,999 | 444 snpp |
| DCCP | no entry | 6,080 | 444 snpp |
5,273 other assigned numbers in the registry have exactly this combination across all four protocols.
The nearest assigned numbers
| Port | Service | Label | Protocols | Registered | Distance |
|---|---|---|---|---|---|
| 442 | cvc-hostd | cvc_hostd | TCPUDP | — | 3 |
| 442 | cvc_hostd | — | TCPUDP | — | 3 |
| 443 | https | http protocol over TLS/SSL | TCPUDPSCTP | — | 2 |
| 444 | snpp | Simple Network Paging Protocol | TCPUDP | — | 1 |
| 446 | ddm-rdb | DDM-Remote Relational Database Access | TCPUDP | — | 1 |
| 447 | ddm-dfm | DDM-Distributed File Management | TCPUDP | — | 2 |
| 448 | ddm-ssl | DDM-Remote DB Access Using Secure Sockets | TCPUDP | — | 3 |