Methods, systems, and computer readable media for actively discovering and tracking addresses associated with 5G and non-5G service endpoints

A system for discovering and tracking addresses associated with producer network function (NF) service endpoints, the system comprising:

• a computing platform including at least one processor and a non-transitory computer readable medium for storing instructions executable by the at least one processor;
• and
• a domain name system (DNS) discover micro-service located on the computing platform and comprising computer-executable instructions stored in the non-transitory computer readable medium and executable by the at least one processor for receiving a first domain name system (DNS) resolution request from a requesting node, querying a DNS server using a fully qualified domain name (FQDN) extracted from the first DNS resolution request, receiving a first response from the DNS server, the first response including an address associated with a producer NF service endpoint associated with the FQDN, storing the address associated with the producer NF service endpoint in a database, communicating the address associated with the producer NF service endpoint to the requesting node, monitoring the FQDN for changes in address associated with the FQDN, and notifying the requesting node of the changes in address associated with the FQDN, wherein the DNS discoverer micro-service includes a DNS records change discoverer for performing the monitoring of the FQDN by:
• detecting expiration of a record storing the address associated with the producer NF service endpoint in the database;
• in response to detecting expiration of the record, querying the DNS server using the FQDN;
• receiving a second response from the DNS server;
• comparing an address in the second response to the address associated with the producer NF service endpoint stored in the record in the database;
• and
• determining that a change in address associated with the FQDN has occurred in response to the address in the second response being different from the address associated with the producer NF service endpoint stored in the record in the database.

A non-transitory computer readable medium having stored thereon executable instructions that when executed by a processor of a computer control the computer to perform steps comprising:

• receiving a first domain name system (DNS) resolution request from a requesting node;
• querying a DNS server using a fully qualified domain name (FQDN) extracted from the first DNS resolution request;
• receiving a first response from the DNS server, the response including an address associated with a producer network function (NF) service endpoint associated with the FQDN;
• storing the address associated with the producer NF service endpoint in a database;
• communicating the address associated with the producer NF service endpoint to the requesting node;
• monitoring the FQDN for changes in address associated with the FQDN, wherein monitoring the FQDN comprises:
• detecting expiration of a record storing the address or associated with the producer NF service endpoint in the database;
• in response to detecting expiration of the record, querying the DNS server using the FQDN;
• receiving a second response from the DNS server;
• comparing an address in the second response to the address associated with the FQDN stored in the record in the database;
• and
• determining that a change address associated with the FQDN has occurred in response to the address in the second response being different from the address associated with the FQDN stored in the record in the database;
• and
• notifying the requesting node of the changes in address associated with the FQDN.