NIST NTP Server List

The list of NIST NTP servers is down for me, is anyone else seeing this?
I'm getting a 404 error
http://tf.nist.gov/tf-cgi/servers.cgi

Yeah, it looks like it's down

stu

http://downforeveryoneorjustme.com/http://tf.nist.gov/tf-cgi/servers.cgi

No, it's not

It's up from Vancouver, Canada. No 404 from here.

Try again.

Just worked fine for me.

I'm still getting a 404. I am using a Windstream backbone, is this maybe
path/server specific. Here is a dig.

dig tf.nist.gov

; <<>> DiG 9.9.5-3-Ubuntu <<>> tf.nist.gov
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 46860
;; flags: qr rd ra; QUERY: 1, ANSWER: 3, AUTHORITY: 2, ADDITIONAL: 2

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;tf.nist.gov. IN A

;; ANSWER SECTION:
tf.nist.gov. 1784 IN CNAME tf.boulder.nist.gov.
tf.boulder.nist.gov. 86384 IN CNAME ftp.boulder.nist.gov.
ftp.boulder.nist.gov. 86384 IN A 132.163.4.45

;; AUTHORITY SECTION:
boulder.nist.gov. 1485 IN NS dns-y.boulder.nist.gov.
boulder.nist.gov. 1485 IN NS gdnsea.nist.gov.

;; ADDITIONAL SECTION:
dns-y.boulder.nist.gov. 1485 IN AAAA 2610:20:6b01:4::10

;; Query time: 6 msec
;; SERVER: 68.70.255.9#53(68.70.255.9)
;; WHEN: Wed Oct 29 13:25:15 EDT 2014
;; MSG SIZE rcvd: 168

I concur, that URL results in 404 for me too. Much content which had
been reliably available at http://tf.nist.gov and
http://www.boulder.nist.gov/ seems to have vanished or broken lately.
Not aware of alternate source. I prefer the NTP.org pools and other
sources anyway, for reliability.

I didn't memorize the federal time servers, but wasn't simply time.gov
one of them?

~$ ntptrace time.gov
2610:20:6005:13::35: timed out, nothing received
***Request timed out

http://www.time.gov/about.html leads to
http://www.boulder.nist.gov/timefreq/ which redirects to the broken
http://tf.nist.gov ... so this has got to be an error.

Maybe they're doing some rearranging and moving, starting with the
removing old part.

At least tf.nist.gov is *up*, giving 403s and 404s. Keying in on .gov
and ipv6 and related debacles, I wonder if results vary depending on
whether one uses v4 or v6...idle speculation.

Perhaps contact via http://www.nist.gov/public_affairs/contact.cfm
(which, amusingly, came with a Foresee survey when I loaded it moments
ago...) or timeinfo@boulder.nist.gov <mailto:timeinfo@boulder.nist.gov>
may yield something.

From: "Brian Butler" <techbb@gmail.com>

> I'm getting a 404 error
> http://tf.nist.gov/tf-cgi/servers.cgi

Add me to the list of "it works" people.

I concur, that URL results in 404 for me too. Much content which had
been reliably available at http://tf.nist.gov and
http://www.boulder.nist.gov/ seems to have vanished or broken lately.
Not aware of alternate source. I prefer the NTP.org pools and other
sources anyway, for reliability.

While boulder.nist does now seem to be a redirect, tf.nist and the child
page are both working from Sprint LTE.

I didn't memorize the federal time servers, but wasn't simply time.gov
one of them?

time.nist.gov is the round-robin.

All this leads me to a pretty important question:

What happens if Judah Levine gets hit by a bus?

Cheers,
-- jra

404 from Kabel Deutschland reaching tf.nist.gov via AS1273, a small hoster in Hamburg, Germany via AS194, Inception Hosting (UK) via AS209; but proper page from VZ FIOS in Framingham, MA also via AS209.

From AS13135, I get 404 on the web page, but my ntpd syncs to 128.138.141.172 just fine.

Stefan

Seems to be working over IPv4, not over IPv6.

$ curl -6 http://tf.nist.gov/tf-cgi/servers.cgi 2>/dev/null | head -5
<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
<html><head>
<title>404 Not Found</title>
</head><body>
<h1>Not Found</h1>
$ curl -4 http://tf.nist.gov/tf-cgi/servers.cgi 2>/dev/null | head -5
<html>
     <head>
       <title>NIST Internet Time Service</title>
       <meta http-equiv="content-type" content="text/html;charset=iso-8859-1">
<script language="JavaScript" id="_fed_an_js_tag" src="/js/federated-analytics.all.min.js?agency=NIST&subagency=tf&pua= UA-42404149-6&yt=true"></script>

That is interesting as the computer I am using is on dual-stack, and I am
probably using IPv6 to reach it.

Also getting a 404 over IPv6. You can verify what transport we're using in Firefox using the SixorNot plugin.

hth,

Doug

That is interesting as the computer I am using is on dual-stack, and I am
probably using IPv6 to reach it.

"happy eyeballs"

Happy Eyeballs has nothing to do with it. This is a server misconfiguration plain and simple.

Doug

Happy Eyeballs has nothing to do with it. This is a server misconfiguration
plain and simple.

I meant that it seems that v4 is broken, but v6 is not.
so sure, it's a server thing, but he's seeing different results maybe
as a side effect of eyeballs.

I disabled IPv6 on my machine and was able to pull it up, reenable IPv6 and
I start getting 404's.

Other way around.

Still acting up for me this morning.

It is now working over IPv6

Either is alcatel-lucent.com for the past 2 days I noticed. Ipv6 version of
their site broken.