After recent updates to leapseconds.awk to include IERS as a source for leap-seconds.list, one URL given for the file at NIST still is ftp://ftp.nist.gov/pub/time/leap-seconds.list:

 

  print "# This file is generated automatically from the data in the public-domain"
  print "# NIST/IERS format leap-seconds.list file, which can be copied from"
  print "# <https://hpiers.obspm.fr/iers/bul/bulc/ntp/leap-seconds.list>"
  print "# or, in a variant with different comments, from"
  print "# <ftp://ftp.nist.gov/pub/time/leap-seconds.list>"
  print "# or <ftp://ftp.boulder.nist.gov/pub/time/leap-seconds.list>."

 

However, at least for me, and at this time, the hostname ftp.nist.gov does not resolve. ftp.boulder.nist.gov does resolve.

[fredg@elastigirl ~]$ dig @gea.nist.gov ftp.nist.gov

; <<>> DiG 9.11.4-P2-RedHat-9.11.4-26.P2.el7_9.15 <<>> @gea.nist.gov ftp.nist.gov

; (2 servers found)

;; global options: +cmd

;; Got answer:

;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 6750

;; flags: qr aa rd; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1

;; WARNING: recursion requested but not available

;; OPT PSEUDOSECTION:

; EDNS: version: 0, flags:; udp: 1220

;; QUESTION SECTION:

;ftp.nist.gov. IN A

;; AUTHORITY SECTION:

nist.gov. 300 IN SOA gea.nist.gov. netops.nist.gov. 3435747 10800 1080 2419200 300

;; Query time: 5 msec

;; SERVER: 129.6.92.10#53(129.6.92.10)

;; WHEN: Wed Jan 10 12:31:43 EST 2024

;; MSG SIZE  rcvd: 88

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| Frederick F. Gleason, Jr. |             Chief Developer             |

|                           |             Paravel Systems             |

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|         A room without books is like a body without a soul.         |

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|                                                         -- Cicero   |

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