{"data":[{"number":53,"slug":"53-dns","name":"DNS","brief":"DNS (Domain Name System) commonly utilizes port 53 to translate human-readable domain names into numerical IP addresses essential for internet communication. While most DNS queries occur via UDP for efficiency, TCP is used for tasks that require reliability, such as zone transfers and larger query responses. DNS acts as the backbone of internet navigation, enabling users to access websites and services seamlessly by resolving hostnames into routable addresses.","commonUsage":"Name Resolution","protocols":["tcp","udp"],"transport":{"tcp":true,"udp":true,"sctp":false},"official":true,"encrypted":false,"range":"well-known","risk":{"score":2,"level":"safe"},"categories":[{"name":"Network Services","slug":"network-services"},{"name":"System","slug":"system"}],"views":16703,"updatedAt":"2026-08-13T12:29:41.578Z","url":"https://whatportis.com/ports/53-dns"},{"number":5351,"slug":"5351-nat-pmp","name":"NAT-PMP","brief":"NAT Port Mapping Protocol (NAT-PMP) enables client devices behind a NAT gateway to configure dynamic port mappings automatically, simplifying inbound connection management. This improves connectivity for services such as peer-to-peer applications, gaming, and remote access without manual network configuration. Operating over both TCP and UDP, it allows devices to communicate their requirements directly to the NAT device to facilitate seamless data exchange while maintaining a level of security and network segmentation.","commonUsage":"NAT traversal","protocols":["tcp","udp"],"transport":{"tcp":true,"udp":true,"sctp":false},"official":true,"encrypted":false,"range":"registered","risk":{"score":5,"level":"caution"},"categories":[{"name":"Security","slug":"security"},{"name":"Network Services","slug":"network-services"}],"views":19643,"updatedAt":"2026-08-13T12:29:36.848Z","url":"https://whatportis.com/ports/5351-nat-pmp"},{"number":5357,"slug":"5357-wsdapi","name":"WSDAPI","brief":"**Web Services for Devices API (WSDAPI)** enables automatic discovery and communication between connected devices in a network, streamlining device management and integration on **Windows Vista, Windows 7, and Windows Server 2008** systems. This protocol simplifies the interaction between PCs and network-enabled devices such as printers, scanners, and cameras by utilizing **web service standards** like SOAP to provide plug-and-play functionality.","commonUsage":"Device discovery","protocols":["tcp","udp"],"transport":{"tcp":true,"udp":true,"sctp":false},"official":false,"encrypted":false,"range":"registered","risk":{"score":4,"level":"caution"},"categories":[{"name":"Web Services","slug":"web-services"},{"name":"Network Services","slug":"network-services"},{"name":"IoT","slug":"iot"}],"views":19229,"updatedAt":"2026-08-13T12:29:37.424Z","url":"https://whatportis.com/ports/5357-wsdapi"},{"number":533,"slug":"533-netwall-emergency-broadcasts","name":"Netwall Emergency Broadcasts","brief":"UDP Port 533 is primarily used by the Netwall service, designed for transmitting emergency broadcast messages across networks. It enables fast and reliable alert dissemination in crisis scenarios, supporting critical infrastructural communication with minimal delay.","commonUsage":"Emergency Alerts","protocols":["udp"],"transport":{"tcp":false,"udp":true,"sctp":false},"official":true,"encrypted":false,"range":"well-known","risk":{"score":4,"level":"caution"},"categories":[{"name":"Security","slug":"security"},{"name":"Network Services","slug":"network-services"},{"name":"System","slug":"system"}],"views":14324,"updatedAt":"2026-08-13T12:29:49.767Z","url":"https://whatportis.com/ports/533-netwall-emergency-broadcasts"},{"number":5353,"slug":"5353-multicast-dns","name":"Multicast DNS","brief":"Multicast DNS (mDNS) is a zero-configuration networking protocol that facilitates hostname resolution without a central DNS server, primarily within small local networks. It allows devices to discover each other and communicate seamlessly, especially helpful in consumer and IoT environments where manual network configuration is impractical.","commonUsage":"Local hostname resolution","protocols":["udp"],"transport":{"tcp":false,"udp":true,"sctp":false},"official":true,"encrypted":false,"range":"registered","risk":{"score":2,"level":"safe"},"categories":[{"name":"Network Services","slug":"network-services"},{"name":"IoT","slug":"iot"}],"views":13394,"updatedAt":"2026-08-13T12:29:53.488Z","url":"https://whatportis.com/ports/5353-multicast-dns"},{"number":5355,"slug":"5355-llmnr","name":"LLMNR","brief":"Link-Local Multicast Name Resolution (LLMNR) is a protocol that enables devices on the same local network segment to perform name resolution without requiring a DNS server. Primarily found in Microsoft environments starting from Windows Vista and Server 2008, LLMNR facilitates communication during network initialization or when DNS is unavailable.","commonUsage":"Local name resolution","protocols":["tcp","udp"],"transport":{"tcp":true,"udp":true,"sctp":false},"official":true,"encrypted":false,"range":"registered","risk":{"score":4,"level":"caution"},"categories":[{"name":"Security","slug":"security"},{"name":"Network Services","slug":"network-services"},{"name":"System","slug":"system"}],"views":10784,"updatedAt":"2026-08-13T12:30:12.158Z","url":"https://whatportis.com/ports/5355-llmnr"},{"number":531,"slug":"531-aol-im-and-irc","name":"AOL IM and IRC","brief":"Port 531 is primarily recognized for its association with legacy instant messaging services like AOL Instant Messenger (AIM) and the Internet Relay Chat (IRC) protocol. It facilitated real-time text communication between users over the internet, supporting both direct peer-to-peer messaging and participation in chat rooms. Being unofficial, the use of this port has diminished over the years; nevertheless, understanding its role helps in managing older systems or potential residual network traffic.","commonUsage":"Instant Messaging","protocols":["tcp","udp"],"transport":{"tcp":true,"udp":true,"sctp":false},"official":false,"encrypted":false,"range":"well-known","risk":{"score":4,"level":"caution"},"categories":[{"name":"Voice and Chat","slug":"voice-and-chat"}],"views":9852,"updatedAt":"2026-08-13T12:30:23.103Z","url":"https://whatportis.com/ports/531-aol-im-and-irc"},{"number":5358,"slug":"5358-wsdapi-secure-channel","name":"WSDAPI Secure Channel","brief":"Port 5358 is used by Windows devices running Vista, Windows 7, and Server 2008 for Web Services on Devices API (WSDAPI) communications over secure channels. It facilitates discovery, management, and integration of devices within a local network, enabling applications to communicate securely with devices such as printers, scanners, and IoT appliances through standardized web protocols.","commonUsage":"Device discovery","protocols":["tcp","udp"],"transport":{"tcp":true,"udp":true,"sctp":false},"official":false,"encrypted":false,"range":"registered","risk":{"score":4,"level":"caution"},"categories":[{"name":"Network Services","slug":"network-services"},{"name":"IoT","slug":"iot"}],"views":9096,"updatedAt":"2026-08-13T12:30:31.061Z","url":"https://whatportis.com/ports/5358-wsdapi-secure-channel"},{"number":530,"slug":"530-rpc","name":"RPC","brief":"Remote Procedure Call (RPC) enables one program to request a service from a program located on another computer in a network. It abstracts the communication process, making it easier to build distributed, client-server applications because the calling method appears as if it's local despite being remote.","commonUsage":"Distributed computing","protocols":["tcp","udp"],"transport":{"tcp":true,"udp":true,"sctp":false},"official":true,"encrypted":false,"range":"well-known","risk":{"score":4,"level":"caution"},"categories":[{"name":"Network Services","slug":"network-services"},{"name":"System","slug":"system"}],"views":8769,"updatedAt":"2026-08-13T12:30:39.733Z","url":"https://whatportis.com/ports/530-rpc"},{"number":5314,"slug":"5314-ginever-net-port","name":"Ginever.net Port","brief":"Port 5314 is attributed to Ginever.net, commonly utilized for data communications associated with its online platform and related gaming services. Supporting both TCP and UDP protocols, it facilitates client-server interactions necessary for real-time gameplay, server synchronization, and data transmission. This port enables seamless connectivity across diverse game features within Ginever.net’s networked ecosystem.","commonUsage":"Game data sync","protocols":["tcp","udp"],"transport":{"tcp":true,"udp":true,"sctp":false},"official":false,"encrypted":false,"range":"registered","risk":{"score":4,"level":"caution"},"categories":[{"name":"Network Services","slug":"network-services"},{"name":"Gaming","slug":"gaming"}],"views":7383,"updatedAt":"2026-08-13T12:30:56.299Z","url":"https://whatportis.com/ports/5314-ginever-net-port"}],"meta":{"query":"53","total":31,"count":10,"limit":10,"hasMore":true}}