Port 200- Port 300
Port 300- Port 400
Port 400- Port 500
Port 500- Port 600
Port 600- Port 700
Port 700- Port 800
Port 800- Port 900
Port 900- Port 1000
Port 1000- Port 1100
Port 1100- Port 1200
Port 300- Port 400
Port 400- Port 500
Port 500- Port 600
Port 600- Port 700
Port 700- Port 800
Port 800- Port 900
Port 900- Port 1000
Port 1000- Port 1100
Port 1100- Port 1200
| Port | Protocol (TCP/UDP) | Title | Description |
| Port 200 | tcp | src | IBM System Resource |
| Port 200 | udp | src | IBM System Resource |
| Port 201 | tcp | at-rtmp | AppleTalk Routing Maintenance |
| Port 201 | udp | at-rtmp | AppleTalk Routing Maintenance |
| Port 202 | tcp | at-nbp | AppleTalk Name Binding |
| Port 202 | udp | at-nbp | AppleTalk Name Binding |
| Port 203 | tcp | at-3 | AppleTalk Unused |
| Port 203 | udp | at-3 | AppleTalk Unused |
| Port 204 | tcp | at-echo | AppleTalk Echo |
| Port 204 | udp | at-echo | AppleTalk Echo |
| Port 205 | tcp | at-5 | AppleTalk Unused |
| Port 205 | udp | at-5 | AppleTalk Unused |
| Port 206 | tcp | at-zis | AppleTalk Zone Information |
| Port 206 | udp | at-zis | AppleTalk Zone Information |
| Port 207 | tcp | at-7 | AppleTalk Unused |
| Port 207 | udp | at-7 | AppleTalk Unused |
| Port 208 | tcp | at-8 | AppleTalk Unused |
| Port 208 | udp | at-8 | AppleTalk Unused |
| Port 209 | tcp | qmtp | The Quick Mail Protocol |
| Port 209 | udp | qmtp | The Quick Mail Protocol |
| Port 210 | tcp | z39.50 | ANSI Z39.50 |
| Port 210 | udp | z39.50 | ANSI Z39.50 |
| Port 211 | tcp | 914c/g | Texas Instruments 914C/G |
| Port 211 | udp | 914c/g | Texas Instruments 914C/G |
| Port 212 | tcp | anet | ATEXSSTR |
| Port 212 | udp | anet | ATEXSSTR |
| Port 213 | tcp | ipx | IPX |
| Port 213 | udp | ipx | IPX |
| Port 214 | tcp | vmpwscs | VM PWSCS |
| Port 214 | udp | vmpwscs | VM PWSCS |
| Port 215 | tcp | softpc | Insignia Solutions |
| Port 215 | udp | softpc | Insignia Solutions |
| Port 216 | tcp | CAIlic | Computer Associates Int’l Server |
| Port 216 | udp | CAIlic | Computer Associates Int’l Server |
| Port 217 | tcp | dbase | dBASE Unix |
| Port 217 | udp | dbase | dBASE Unix |
| Port 218 | tcp | mpp | Netix Message Posting |
| Port 218 | udp | mpp | Netix Message Posting |
| Port 219 | tcp | uarps | Unisys ARPs |
| Port 219 | udp | uarps | Unisys ARPs |
| Port 220 | tcp | imap3 | Interactive Mail Access v3 |
| Port 220 | udp | imap3 | Interactive Mail Access v3 |
| Port 221 | tcp | fln-spx | Berkeley rlogind with auth |
| Port 221 | udp | fln-spx | Berkeley rlogind with auth |
| Port 222 | tcp | rsh-spx | Berkeley rshd with auth |
| Port 222 | udp | rsh-spx | Berkeley rshd with auth |
| Port 223 | tcp | cdc | Certificate Distribution Center |
| Port 223 | udp | cdc | Certificate Distribution Center |
| Port 224 | tcp | masqdialer | masqdialer |
| Port 224 | udp | masqdialer | masqdialer |
| Port 242 | tcp | direct | Direct |
| Port 242 | udp | direct | Direct |
| Port 243 | tcp | sur-meas | Survey Measurement |
| Port 243 | udp | sur-meas | Survey Measurement |
| Port 244 | tcp | inbusiness | inbusiness |
| Port 244 | udp | inbusiness | inbusiness |
| Port 245 | tcp | link | LINK |
| Port 245 | udp | link | LINK |
| Port 246 | tcp | dsp3270 | Display Systems Protocol |
| Port 246 | udp | dsp3270 | Display Systems Protocol |
| Port 247 | tcp | subntbcst_tftp | SUBNTBCST_TFTP |
| Port 247 | udp | subntbcst_tftp | SUBNTBCST_TFTP |
| Port 248 | tcp | bhfhs | bhfhs |
| Port 248 | udp | bhfhs | bhfhs |
| Port 256 | tcp | rap | RAP |
| Port 256 | udp | rap | RAP |
| Port 257 | tcp | set | Secure Electronic Transaction |
| Port 257 | udp | set | Secure Electronic Transaction |
| Port 259 | tcp | esro-gen | Efficient Short Remote |
| Port 259 | udp | esro-gen | Efficient Short Remote |
| Port 260 | tcp | openport | Openport |
| Port 260 | udp | openport | Openport |
| Port 261 | tcp | nsiiops | IIOP Name Service TLS/SSL |
| Port 261 | udp | nsiiops | IIOP Name Service TLS/SSL |
| Port 262 | tcp | arcisdms | Arcisdms |
| Port 262 | udp | arcisdms | Arcisdms |
| Port 263 | tcp | hdap | HDAP |
| Port 263 | udp | hdap | HDAP |
| Port 264 | tcp | bgmp | BGMP |
| Port 264 | udp | bgmp | BGMP |
| Port 265 | tcp | x-bone-ctl | X-Bone CTL |
| Port 265 | udp | x-bone-ctl | X-Bone CTL |
| Port 266 | tcp | sst | SCSI on ST |
| Port 266 | udp | sst | SCSI on ST |
| Port 267 | tcp | td-service | Tobit David Service |
| Port 267 | udp | td-service | Tobit David Service |
| Port 268 | tcp | td-replica | Tobit David Replica |
| Port 268 | udp | td-replica | Tobit David Replica |
| Port 269 | tcp | manet | MANET Protocols |
| Port 269 | udp | manet | MANET Protocols |
| Port 270 | udp | gist | Q-mode encapsulation for messages |
| Port 280 | tcp | http-mgmt | http-mgmt |
| Port 280 | udp | http-mgmt | http-mgmt |
| Port 281 | tcp | personal-link | Personal Link |
| Port 281 | udp | personal-link | Personal Link |
| Port 282 | tcp | cableport-ax | Cable Port A/X |
| Port 282 | udp | cableport-ax | Cable Port A/X |
| Port 283 | tcp | rescap | rescap |
| Port 283 | udp | rescap | rescap |
| Port 284 | tcp | corerjd | corerjd |
| Port 284 | udp | corerjd | corerjd |
| Port 286 | tcp | fxp | FXP Communication |
| Port 286 | udp | fxp | FXP Communication |
| Port 287 | tcp | k-block | K-BLOCK |
| Port 287 | udp | k-block | K-BLOCK |