| 6401 | boe-was boe-was | | - | - |
| 6402 | boe-eventsrv boe-eventsrv | | - | - |
| 6403 | boe-cachesvr boe-cachesvr | | - | - |
| 6404 | Business Objects Enterprise internal server boe-filesvr | | - | - |
| 6405 | Business Objects Enterprise internal server boe-pagesvr | | - | - |
| 6406 | Business Objects Enterprise internal server boe-processsvr | | - | - |
| 6407 | Business Objects Enterprise internal server boe-resssvr1 | | - | - |
| 6408 | Business Objects Enterprise internal server boe-resssvr2 | | - | - |
| 6409 | Business Objects Enterprise internal server boe-resssvr3 | | - | - |
| 6410 | Business Objects Enterprise internal server boe-resssvr4 | | - | - |
| 6417 | Faxcom Message Service faxcomservice | TCP UDP | - | - |
| 6418 | SYserver remote commands syserverremote | TCP | - | - |
| 6419 | Simple VDR Protocol svdrp, svdrp-disc | TCP UDP | - | - |
| 6420 | NIM_VDRShell nim-vdrshell | TCP UDP | - | - |
| 6421 | NIM_WAN nim-wan | TCP UDP | - | - |
| 6432 | PgBouncer pgbouncer | TCP | - | - |
| 6440 | heliosd daemon heliosd | TCP | - | - |
| 6442 | Transitory Application Request Protocol tarp | TCP | - | - |
| 6444 | Grid Engine Qmaster Service sge_qmaster, sge-qmaster | TCP UDP | - | - |
| 6445 | Grid Engine Execution Service sge_execd, sge-execd | TCP UDP | - | - |
| 6455 | SKIP Certificate Receive skip-cert-recv | TCP UDP | - | - |
| 6456 | SKIP Certificate Send skip-cert-send | TCP UDP | - | - |
| 6464 | Port assignment for medical device communication in accordance to IEEE 11073-20701 ieee11073-20701 | TCP UDP | - | - |
| 6471 | LVision License Manager lvision-lm | TCP UDP | - | - |
| 6481 | Service Tags servicetags | TCP UDP | - | - |
| 6482 | Logical Domains Management Interface ldoms-mgmt | TCP UDP | - | - |
| 6483 | SunVTS RMI SunVTS-RMI | TCP UDP | - | - |
| 6500 | BoKS Master boks | TCP UDP | - | - |
| 6501 | BoKS Servc boks_servc, boks-servc | TCP UDP | - | - |
| 6502 | BoKS Servm boks_servm, boks-servm | TCP UDP | - | - |
| 6503 | BoKS Clntd boks_clntd, boks-clntd | TCP UDP | - | - |
| 6505 | BoKS Admin Private Port badm_priv, badm-priv | TCP UDP | - | - |
| 6506 | BoKS Admin Public Port badm_pub, badm-pub | TCP UDP | - | - |
| 6507 | BoKS Dir Server, Private Port bdir_priv, bdir-priv | TCP UDP | - | - |
| 6508 | BoKS Dir Server, Public Port bdir_pub, bdir-pub | TCP UDP | - | - |
| 6509 | MGCS-MFP Port mgcs-mfp-port | TCP UDP | - | - |
| 6510 | MCER Port mcer-port | TCP UDP | - | - |
| 6511 | Datagram Congestion Control Protocol Encapsulation for NAT Traversal dccp-udp | UDP | - | - |
| 6513 | NETCONF over TLS netconf-tls | TCP | - | yes |
| 6543 | lds_distrib lds-distrib | TCP UDP | - | - |
| 6544 | LDS Dump Service lds-dump | TCP UDP | - | - |
| 6547 | APC 6547 apc-6547 | TCP UDP | - | - |
| 6548 | APC 6548 apc-6548 | TCP UDP | - | - |
| 6549 | APC 6549 apc-6549 | TCP UDP | - | - |
| 6550 | fg-sysupdate fg-sysupdate | TCP UDP | - | - |
| 6551 | Software Update Manager sum | TCP UDP | - | - |
| 6556 | Checkmk Monitoring Agent checkmk-agent | TCP | - | - |
| 6558 | xdsxdm | TCP UDP | - | - |
| 6566 | SANE Control Port sane-port | TCP UDP | - | - |
| 6568 | CanIt Storage Manager canit_store, canit-store, rp-reputation | TCP UDP | - | - |
| 6579 | Affiliate affiliate | TCP UDP | - | - |
| 6580 | Parsec Masterserver parsec-master | TCP UDP | - | - |
| 6581 | Parsec Peer-to-Peer parsec-peer | TCP UDP | - | - |
| 6583 | JOA Jewel Suite joaJewelSuite | TCP UDP | - | - |
| 6601 | Microsoft Threat Management Gateway SSTP mstmg-sstp | TCP | - | - |
| 6602 | Windows WSS Communication Framework wsscomfrmwk | TCP | - | - |
| 6610 | Bencher API bencher | TCP UDP | - | - |
| 6625 | DataScaler control datascaler-ctl | TCP | - | - |
| 6626 | WAGO Service and Update wago-service | TCP UDP | - | - |
| 6627 | Allied Electronics NeXGen nexgen | TCP UDP | - | - |
| 6628 | AFE Stock Channel M/C afesc-mc | TCP UDP | - | - |
| 6629 | Secondary, (non ANDI) multi-protocol multi-function interface to the Allied ANDI-based family of forecourt controllers nexgen-aux | TCP UDP | - | - |
| 6632 | eGenix mxODBC Connect mxodbc-connect | TCP | - | - |
| 6633 | Cisco vPath Services Overlay cisco-vpath-tun | UDP | - | - |
| 6634 | MPLS Performance Measurement out-of-band response mpls-pm | UDP | - | - |
| 6635 | Encapsulate MPLS packets in UDP tunnels. mpls-udp | UDP | - | - |
| 6636 | Encapsulate MPLS packets in UDP tunnels with DTLS. mpls-udp-dtls | UDP | - | - |
| 6653 | OpenFlow openflow | TCP UDP | - | - |
| 6655 | PC SOFT - Software factory UI/manager pcs-sf-ui-man | TCP | - | - |
| 6656 | Emergency Message Control Service emgmsg | TCP | - | - |
| 6665-6669 | IRCU ircu | TCP | - | - |
| 6671 | P4P Portal Service p4p-portal | TCP UDP | - | - |
| 6672 | vision_server vision_server, vision-server | TCP UDP | - | - |
| 6673 | vision_elmd vision_elmd, vision-elmd | TCP UDP | - | - |
| 6678 | Viscount Freedom Bridge Protocol vfbp, vfbp-disc | TCP UDP | - | - |
| 6679 | Osorno Automation osaut | TCP UDP | - | - |
| 6687 | CleverView for cTrace Message Service clever-ctrace | TCP | - | - |
| 6688 | CleverView for TCP/IP Message Service clever-tcpip | TCP | - | - |
| 6689 | Tofino Security Appliance tsa | TCP UDP | - | - |
| 6690 | CLEVERDetect Message Service cleverdetect | TCP | - | - |
| 6701 | KTI/ICAD Nameserver kti-icad-srvr | TCP UDP | - | - |
| 6702 | e-Design network e-design-net | TCP UDP | - | - |
| 6704 | ForCES HP (High Priority) channel frc-hp | SCTP | - | - |
| 6705 | ForCES MP (Medium Priority) channel frc-mp | SCTP | - | - |
| 6706 | ForCES LP (Low priority) channel frc-lp | SCTP | - | - |
| 6714 | Internet Backplane Protocol ibprotocol | TCP UDP | - | - |
| 6715 | Fibotrader Communications fibotrader-com | TCP UDP | - | - |
| 6716 | Princity Agent princity-agent | TCP | - | - |
| 6767 | BMC PERFORM AGENT bmc-perf-agent | TCP UDP | - | - |
| 6768 | BMC PERFORM MGRD bmc-perf-mgrd | TCP UDP | - | - |
| 6769 | ADInstruments GxP Server adi-gxp-srvprt | TCP UDP | - | - |
| 6777 | netTsunami Tracker ntz-tracker | TCP | - | - |
| 6778 | netTsunami p2p storage system ntz-p2p-storage | TCP | - | - |
| 6784 | Bidirectional Forwarding Detection (BFD) on Link Aggregation Group (LAG) Interfaces bfd-lag | UDP | - | - |
| 6790 | HNMP hnmp | TCP UDP | - | - |
| 6791 | Halcyon Network Manager hnm | TCP UDP | - | - |
| 6801 | ACNET Control System Protocol acnet | TCP UDP | - | - |
| 6831 | ambit-lm ambit-lm | TCP UDP | - | - |
| 6841 | Netmo Default netmo-default | TCP UDP | - | - |
| 6850 | ICCRUSHMORE iccrushmore | TCP UDP | - | - |