diff -r c98527220564 -r d0dfd48806f9 util/dns.lua
--- a/util/dns.lua	Thu Mar 18 00:03:16 2021 +0100
+++ b/util/dns.lua	Sun Oct 04 19:23:16 2020 +0200
@@ -18,6 +18,7 @@
 
 local have_net, net_util = pcall(require, "util.net");
 
+local iana_data = require "util.dnsregistry";
 if have_net and not net_util.ntop then -- Added in Prosody 0.11
 	have_net = false;
 end
@@ -32,59 +33,6 @@
 	return (s_gsub(s, ".", chartohex));
 end
 
--- Converted from
--- http://www.iana.org/assignments/dns-parameters
--- 2020-06-25
-
-local classes = {
-	IN = 1; "IN";
-	nil;
-	CH = 3; "CH";
-	HS = 4; "HS";
-};
-
-local types = {
-"A";"NS";"MD";"MF";"CNAME";"SOA";"MB";"MG";"MR";"NULL";"WKS";"PTR";"HINFO";
-"MINFO";"MX";"TXT";"RP";"AFSDB";"X25";"ISDN";"RT";"NSAP";"NSAP-PTR";"SIG";
-"KEY";"PX";"GPOS";"AAAA";"LOC";"NXT";"EID";"NIMLOC";"SRV";"ATMA";"NAPTR";
-"KX";"CERT";"A6";"DNAME";"SINK";"OPT";"APL";"DS";"SSHFP";"IPSECKEY";"RRSIG";
-"NSEC";"DNSKEY";"DHCID";"NSEC3";"NSEC3PARAM";"TLSA";"SMIMEA";[55]="HIP";
-[56]="NINFO";[57]="RKEY";[58]="TALINK";[59]="CDS";[60]="CDNSKEY";[61]="OPENPGPKEY";
-[62]="CSYNC";[63]="ZONEMD";[99]="SPF";[100]="UINFO";[101]="UID";[102]="GID";
-[103]="UNSPEC";[104]="NID";[105]="L32";[106]="L64";[107]="LP";[108]="EUI48";
-[109]="EUI64";["CSYNC"]=62;["TXT"]=16;["NAPTR"]=35;["A6"]=38;["RP"]=17;
-["TALINK"]=58;["NXT"]=30;["MR"]=9;["UINFO"]=100;["X25"]=19;["TKEY"]=249;
-["CERT"]=37;["SMIMEA"]=53;[252]="AXFR";[253]="MAILB";["CDS"]=59;[32769]="DLV";
-["RT"]=21;["WKS"]=11;[249]="TKEY";["LP"]=107;[250]="TSIG";["SSHFP"]=44;["DS"]=43;
-["ISDN"]=20;["ATMA"]=34;["NS"]=2;[257]="CAA";["PX"]=26;["MX"]=15;["TSIG"]=250;
-["EID"]=31;["TLSA"]=52;["GID"]=102;["KX"]=36;["SPF"]=99;["DOA"]=259;["GPOS"]=27;
-["IPSECKEY"]=45;["NIMLOC"]=32;["RRSIG"]=46;["UID"]=101;["DNAME"]=39;["NSAP"]=22;
-["DNSKEY"]=48;["SINK"]=40;["DHCID"]=49;[32768]="TA";["NSAP-PTR"]=23;["AAAA"]=28;
-["PTR"]=12;["MINFO"]=14;["TA"]=32768;["EUI64"]=109;[260]="AMTRELAY";
-["AMTRELAY"]=260;["CDNSKEY"]=60;[259]="DOA";["LOC"]=29;[258]="AVC";["AVC"]=258;
-["CAA"]=257;["MB"]=7;["*"]=255;[256]="URI";["URI"]=256;["SRV"]=33;["EUI48"]=108;
-[255]="*";[254]="MAILA";["MAILA"]=254;["MAILB"]=253;["CNAME"]=5;[251]="IXFR";
-["APL"]=42;["OPENPGPKEY"]=61;["MD"]=3;["NINFO"]=56;["ZONEMD"]=63;["RKEY"]=57;
-["L32"]=105;["NID"]=104;["HIP"]=55;["NSEC"]=47;["DLV"]=32769;["UNSPEC"]=103;
-["NSEC3PARAM"]=51;["MF"]=4;["MG"]=8;["AFSDB"]=18;["A"]=1;["SIG"]=24;["NSEC3"]=50;
-["HINFO"]=13;["IXFR"]=251;["NULL"]=10;["AXFR"]=252;["KEY"]=25;["OPT"]=41;
-["SOA"]=6;["L64"]=106;
-}
-
-local errors = {
-	NoError = "No Error"; [0] = "NoError";
-	FormErr = "Format Error"; "FormErr";
-	ServFail = "Server Failure"; "ServFail";
-	NXDomain = "Non-Existent Domain"; "NXDomain";
-	NotImp = "Not Implemented"; "NotImp";
-	Refused = "Query Refused"; "Refused";
-	YXDomain = "Name Exists when it should not"; "YXDomain";
-	YXRRSet = "RR Set Exists when it should not"; "YXRRSet";
-	NXRRSet = "RR Set that should exist does not"; "NXRRSet";
-	NotAuth = "Server Not Authoritative for zone"; "NotAuth";
-	NotZone = "Name not contained in zone"; "NotZone";
-};
-
 -- Simplified versions of Waqas DNS parsers
 -- Only the per RR parsers are needed and only feed a single RR
 
@@ -270,8 +218,8 @@
 
 return {
 	parsers = parsers;
-	classes = classes;
-	types = types;
-	errors = errors;
+	classes = iana_data.classes;
+	types = iana_data.types;
+	errors = iana_data.errors;
 	params = params;
 };