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bortzmeyer/pool-ntp.md

Created January 18, 2017 19:55
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Long list of name servers for pool.ntp.org
Raw
pool-ntp.md 
% check-soa -i pool.ntp.org
a.ntpns.org.
	2620:101:d007::42: OK: 1484769062 (3 ms)
	207.171.17.42: OK: 1484769062 (2 ms)
b.ntpns.org.
	2001:8e0:ffff:1::282: OK: 1484769062 (15 ms)
	212.25.19.23: OK: 1484769062 (17 ms)
	193.243.171.138: OK: 1484769062 (30 ms)
	174.127.124.192: OK: 1484769062 (100 ms)
c.ntpns.org.
	85.214.25.217: OK: 1484769062 (22 ms)
	2a01:238:426b:900:4535:f84f:5043:4854: OK: 1484769062 (24 ms)
	2a00:14b0:4200:32e0::1e5: OK: 1484769062 (31 ms)
	89.36.18.22: OK: 1484769062 (48 ms)
d.ntpns.org.
	2a01:4f8:121:43cd::3:1: OK: 1484769062 (14 ms)
	178.63.120.205: OK: 1484769062 (15 ms)
	199.188.48.59: OK: 1484769062 (100 ms)
	199.249.223.53: OK: 1484769062 (210 ms)
e.ntpns.org.
	94.242.223.210: OK: 1484769062 (0 ms)
	2001:4b20:0:ca01:5054:ff:fe6f:c4fb: OK: 1484769062 (16 ms)
	46.234.32.107: OK: 1484769062 (15 ms)
	173.255.139.202: OK: 1484769062 (141 ms)
f.ntpns.org.
	2a02:2290:2:48::73: OK: 1484769062 (2 ms)
	46.29.176.73: OK: 1484769062 (2 ms)
	31.3.105.98: OK: 1484769062 (13 ms)
	2001:4b20:0:ca01:5054:ff:fe69:9149: OK: 1484769062 (15 ms)
	46.234.32.105: OK: 1484769062 (15 ms)
	2a03:7900:104:1::2: OK: 1484769062 (22 ms)
g.ntpns.org.
	37.123.115.71: OK: 1484769062 (9 ms)
h.ntpns.org.
	2a01:238:426b:900:4535:f84f:5043:4854: OK: 1484769062 (21 ms)
	45.127.112.23: OK: 1484769062 (53 ms)
i.ntpns.org.
	2a02:2290:2:48::73: OK: 1484769062 (9 ms)
	45.127.113.23: OK: 1484769062 (10 ms)
@packetbiral
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Used the Flush Cache function on the GPD site to flush NS records for ntp.org and pool.ntp.org.

My local Google instance is responding correctly after that:

sadiq@lasciel:~/dev/ > dig pool.ntp.org @8.8.8.8

; <<>> DiG 9.10.3-P4-Ubuntu <<>> pool.ntp.org @8.8.8.8
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 57924
;; flags: qr rd ra; QUERY: 1, ANSWER: 4, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 512
;; QUESTION SECTION:
;pool.ntp.org. IN A

;; ANSWER SECTION:
pool.ntp.org. 137 IN A 206.108.0.132
pool.ntp.org. 137 IN A 192.95.25.79
pool.ntp.org. 137 IN A 167.114.204.238
pool.ntp.org. 137 IN A 199.19.167.36

;; Query time: 26 msec
;; SERVER: 8.8.8.8#53(8.8.8.8)
;; WHEN: Wed Jan 18 20:52:14 UTC 2017
;; MSG SIZE rcvd: 105

@jungle-boogie
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Or with my local Unbound

That's a mighty impressive response time. Any input on how I can make it that good? I resolve to root DNS zones, not ISP DNS/public DNS.

@abh
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abh commented Jan 18, 2017

@bortzmeyer Three of the four old servers have been down for months; I've been nagging the folks in charge of the ntp.org domain to get it updated and we recently got the in-zone NS-set updated to include PCH and Dyn. The delegation was updated today, but as you saw it looks like the one working server of the old four had a hiccup. :-(

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