Y https://tools.ietf.org/html/rfc1034 → DOMAIN NAMES - CONCEPTS AND FACILITIES
Y https://tools.ietf.org/html/rfc1035 → DOMAIN NAMES - IMPLEMENTATION AND SPECIFICATION
? https://tools.ietf.org/html/rfc1101 → DNS Encoding of Network Names and Other Types
-Y https://tools.ietf.org/html/rfc1123 → Requirements for Internet Hosts -- Application and Support
+Y https://tools.ietf.org/html/rfc1123 → Requirements for Internet Hosts — Application and Support
~ https://tools.ietf.org/html/rfc1464 → Using the Domain Name System To Store Arbitrary String Attributes
Y https://tools.ietf.org/html/rfc1536 → Common DNS Implementation Errors and Suggested Fixes
Y https://tools.ietf.org/html/rfc1876 → A Means for Expressing Location Information in the Domain Name System