NAPTR - Naming Authority Pointer

The NAPTR (Naming Authority Pointer) record specifies a regular expression based rewrite rule that, when applied to an existing string, produces a new domain label or URI (Universal Resource Identifier). This allows DNS to be used to look up services for a wide variety of resource names that are not in domain name syntax. For more information, see RFC 2915.


  • Fully interactive 3GPP based network map
  • Narrated call flows
  • Detailed network procedures

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