Globally distributed IPv4 and IPv6 NTP service

The following NTP server sets are available to SixXS users over both IPv4 and IPv6. We especially recommend using a NTP server when using either the AYIYA or heartbeat protocols.

These NTP server sets comprise out of NTP Stratum 2-4 servers. Please only use the above given dns names for this service. The set of servers is automatically updated based on availablity and quality.

NTP Server Pools

Pool DNS Name	Description
ntp.sixxs.net	Global Server Set
ntp.eu.sixxs.net	European based Server Set
ntp.us.sixxs.net	United States based Server Set
ntp.ap.sixxs.net	Asia Pacific based Server Set

For other NTP servers and more information, check out NTP.org and of course their pool.ntp.org - NTP Server Pool project.

NTP Server Status

Below table gives an overview of the individual NTP servers and their status. Do not use these directly, as service availablity on them can be turned on/off any time. Thus use only the ntp{.eu|ap|us}.sixxs.net hostnames as given above as those sets comprise only the active servers. Servers which are marked green are included in the pool, but orange (Stratum > 4) or red (stratum == 0, aka not available) are excluded from the DNS pool.

TLD	PoP	Family	Stratum	Offset	Delay	Inconsistencies / notes
eu
	beanr01	IPv6	2	0.007069	0.04642
		IPv4	2	0.000529	0.03337
	bebru01	IPv4	3	0.433273	0.03407
		IPv6	3	0.43691	0.04205
	chgva01	IPv4	3	-0.244516	0.05054
		IPv6	3	-0.247674	0.05194
	chzrh01	IPv4	3	-0.055054	0.05473
		IPv6	3	-0.055319	0.05463
	chzrh02	IPv6	3	-6.3203	0.047
		IPv4	3	-6.32315	0.04475
	czprg01	IPv6	3	-0.003513	0.04521
		IPv4	3	-0.006788	0.06036
	decgn01	IPv6	2	0.000585	0.03415
		IPv4	2	0.0007	0.03413
	dedus01	IPv6				Excluded from pool, Address not at ns1, Address not at ns2, Address not at ns3, Address not in DNSdb
		IPv4				Excluded from pool, Address not at ns1, Address not at ns2, Address not at ns3, Address not in DNSdb
	deham01	IPv4	3	0.170573	0.04883
		IPv6	3	0.169805	0.04776
	deham02	IPv4	2	-0.076176	0.04875
		IPv6	2	-0.077806	0.04733
	deleo01	IPv6	2	0.002325	0.0446
		IPv4	2	0.001272	0.04301
	demuc02	IPv6	2	0.001265	0.04578
		IPv4	2	0.001481	0.04655
	dkcph01	IPv6	3	0.091609	0.04231
		IPv4	3	0.091128	0.04219
	dkcph02	IPv6				Excluded from pool, Address not at ns1, Address not at ns2, Address not at ns3, Address not in DNSdb
		IPv4	3	0.010515	0.04042
	fihel01	IPv6				Excluded from pool, Address not at ns1, Address not at ns2, Address not at ns3, Address not in DNSdb
		IPv6	2	-0.005792	0.08362
		IPv4	2	0.000617	0.0681
	fotor01	IPv4	3	-0.075482	0.06404
		IPv6	3	-0.074981	0.06596
	frmrs01	IPv6	2	0.097558	0.0562
		IPv4	2	0.0981	0.0555
	gblon02	IPv6	3	0.013957	0.0365
		IPv4	3	0.014315	0.03569
	gblon03	IPv4				Excluded from pool, Address not at ns1, Address not at ns2, Address not at ns3, Address not in DNSdb
		IPv6				Excluded from pool, Address not at ns1, Address not at ns2, Address not at ns3, Address not in DNSdb
	grath01	IPv4	2	0.000426	0.09676
		IPv6	2	0.033254	0.16309
	hubud01	IPv6	3	-0.154416	0.06184
		IPv4	3	-0.15415	0.0611
	hubud02	IPv4	3	0.072463	0.06108
		IPv6	3	0.072112	0.06177
	iedub01	IPv4	3	-0.011383	0.0489
		IPv6	3	-0.011574	0.06082
	iedub02	IPv6	3	-0.076612	0.05418
		IPv4	3	-0.080267	0.04791
	iegwy01	IPv4	4	0.016153	0.05243
		IPv6				Excluded from pool, Address not at ns1, Address not at ns2, Address not at ns3, Address not in DNSdb
	ittrn01	IPv6	3	-0.0006	0.05077
		IPv4	3	-0.0005	0.05061
	lulux01	IPv6	3	-0.029477	0.04262
		IPv4	3	-0.029107	0.03835
	mtmsd01	IPv4				Excluded from pool, Address not at ns1, Address not at ns2, Address not at ns3, Address not in DNSdb
		IPv6				Excluded from pool, Address not at ns1, Address not at ns2, Address not at ns3, Address not in DNSdb
	nlams01	IPv6	2	-0.087003	0.0258
		IPv4	2	-0.087025	0.02579
	nlams04	IPv6	3	-0.057419	0.03088
		IPv4	3	-0.054619	0.03088
	nlede01	IPv6	2	0.003447	0.03188
		IPv4	2	0.003526	0.03191
	nlhaa01	IPv4	3	-0.124243	0.03072
		IPv6	3	-0.123735	0.03072
	noosl01	IPv4	3	0.100196	0.05217
		IPv6	3	0.101315	0.04974
	plpoz01	IPv4	3	-0.000645	0.05403
		IPv6	3	-0.000609	0.05417
	plpoz02	IPv6	2	-0.000934	0.06105
		IPv4	2	0.000558	0.05821
	plwaw01	IPv4	3	0.000992	0.06348
		IPv6	3	0.00072	0.05338
	ptlis01	IPv6	3	-0.024462	0.08919
		IPv4	3	-0.025569	0.0963
	ruled01	IPv6	3	0.002639	0.05931
		IPv4	3	-0.002155	0.06921
	sesto01	IPv6	2	-0.027744	0.04759
		IPv4	2	-0.031078	0.05415
	sesto02	IPv6	3	0.000491	0.04813
		IPv4	3	0.000482	0.04813
	simbx01	IPv4	2	-0.028351	0.0777
		IPv6	2	-0.027003	0.05641
us
	brudi01	IPv4	2	-0.016951	0.26286
		IPv6	2	-0.022151	0.29683
	usanc01	IPv6	3	0.003802	0.22844
		IPv4	3	-0.000272	0.20769
	usbos01	IPv6	2	-0.080107	0.11993
		IPv4	2	-0.074007	0.11586
	uschi02	IPv4				Excluded from pool, Address not at ns1, Address not at ns2, Address not at ns3, Address not in DNSdb
		IPv6	2	0.036093	0.13531
	usdal01	IPv6	2	-0.145412	0.15694
		IPv4	2	-0.14369	0.15656
	usmia01	IPv6	3	0.001958	0.18675
		IPv6	3	0.009154	0.17949
		IPv4	3	0.000688	0.15025
	usphx01	IPv6	3	0.12288	0.20944
		IPv4	3	0.122068	0.18469
ap
	ncnou01	IPv4	3	0.005605	0.33742
		IPv6	3	0.002807	0.34322
	nzwlg01	IPv4	2	-0.028449	0.31409
		IPv6	2	-0.023194	0.31053

Stratums: 10x excluded, 35x S2, 56x S3, 1x S4

1 left on ns11 left on ns21 left on ns3