[HECnet] A USNO GPS network time server is now in operation at Digital Equipment Corporation, Palo Alto, CA

I'm not sure I'm following all this. I didn't see that usno.hpl.hp.com exists, see below.? There doesn't appear to be any DNS name associated with the IP address. It does respond to a ping. $ *ping -c 4 usno.hpl.hp.com* ping: cannot resolve usno.hpl.hp.com: Unknown host $ *nslookup 204.123.2.72 * ;; Got SERVFAIL reply from 68.237.161.12, trying next server ;; Got SERVFAIL reply from 71.243.0.12, trying next server Server:??????? 192.168.22.1 Address:??? 192.168.22.1#53 ** server can't find 72.2.123.204.in-addr.arpa: SERVFAIL $ *ping -c 4 204.123.2.72 * PING 204.123.2.72 (204.123.2.72): 56 data bytes 64 bytes from 204.123.2.72: icmp_seq=0 ttl=53 time=76.880 ms 64 bytes from 204.123.2.72: icmp_seq=1 ttl=53 time=69.378 ms 64 bytes from 204.123.2.72: icmp_seq=2 ttl=53 time=70.053 ms 64 bytes from 204.123.2.72: icmp_seq=3 ttl=53 time=69.613 ms I checked the IP address and host name against a number of DNS servers.? It does not respond to a time request on port 37 10:06:31 USER?? Site??????????? Greenwich Mean Time ->? Local Time Zone 10:06:31 USER Difference????? Delay 10:06:31 USER?? VENTI2????????? 22-Nov-2021 15:06:31 ->? 22-Nov-2021 10:06:31-EST 10:06:31 USER?? time.nist.gov?????????? Error in TCP receive. 10:06:31 USER?? wwv.nist.gov??????????? 22-Nov-2021 15:06:31? ->???????????????? :00 10:06:31 USER?? utcnist.colorado.edu 22-Nov-2021 15:06:31? ->???????????????? :00 10:06:41 USER *204.123.2.72??????????? timed out.* 10:06:41 USER?? time.maconbibb.us?????? timed out. 10:06:41 USER?? nist.netservicesgroup.com?????? timed out. 10:06:41 USER 10:06:41 USER?????????????????? Average difference???????????????????? :00 10:06:41 USER?????????????????? Average clock time 22-Nov-2021 10:06:31-EST 10:06:41 USER?????????????????? Time spent surveying = 18.131 seconds. Getting time on TCP port 37 is /old/.? I only do it because that is all I have until such time as I port something smarter. Note the following from NIST: "We will continue to support the "TIME" protocol that uses TCP port 37 for the forseeable future." So not responding on port 37 might not be a false negative, if only NTP is supported. On 11/20/21 8:39 PM, David Moylan wrote: