2020-04-07 2024-09-25 0-1023 IETF Review 1024-16383 Specification Required 16384-32767 Private or Experimental Use Miroslav Lichvar, Daniel Franke 0 End of Message RFC8915, Section 4.1.1 1 NTS Next Protocol Negotiation RFC8915, Section 4.1.2 2 Error RFC8915, Section 4.1.3 3 Warning RFC8915, Section 4.1.4 4 AEAD Algorithm Negotiation RFC8915, Section 4.1.5 5 New Cookie for NTPv4 RFC8915, Section 4.1.6 6 NTPv4 Server Negotiation RFC8915, Section 4.1.7 7 NTPv4 Port Negotiation RFC8915, Section 4.1.8 8-1023 Unassigned 1024 Compliant AES-128-GCM-SIV Exporter Context 1025-16383 Unassigned 16384-32767 Reserved for Private or Experimental Use 0-1023 IETF Review 1024-32767 Specification Required 32768-65535 Private or Experimental Use Miroslav Lichvar, Daniel Franke 0 Network Time Protocol version 4 (NTPv4) 1-32767 Unassigned 32768-65535 Reserved for Private or Experimental Use 0-1023 IETF Review 1024-32767 Specification Required 32768-65535 Private or Experimental Use Miroslav Lichvar, Daniel Franke 0 Unrecognized Critical Record RFC8915, Section 4.1.3 1 Bad Request RFC8915, Section 4.1.3 2 Internal Server Error RFC8915, Section 4.1.3 3-32767 Unassigned 32768-65535 Reserved for Private or Experimental Use 0-1023 IETF Review 1024-32767 Specification Required 32768-65535 Private or Experimental Use Miroslav Lichvar, Daniel Franke 0-32767 Unassigned 32768-65535 Reserved for Private or Experimental Use