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
	bebru01	IPv6	3	0.280668	0.0396
		IPv4	3	0.277349	0.03267
	chzrh01	IPv4	3	-0.681249	0.05406
		IPv6	3	-0.499203	0.04774
	decgn01	IPv6	2	-0.047462	0.03235
		IPv4	2	-0.047308	0.03227
	dedus01	IPv6	2	0.092269	0.03587
		IPv4	2	0.097036	0.0387
	deham01	IPv4	2	0.044087	0.03682
		IPv6	2	0.047201	0.04308
	deham02	IPv6	2	0.009036	0.04309
		IPv4	2	0.005619	0.03625
	demuc02	IPv6	2	0.004499	0.04697
		IPv4	2	0.006558	0.05119
	dkcph01	IPv6	3	0.374515	0.03957
		IPv4	3	0.374366	0.03955
	dkcph02	IPv6	2	-0.069452	0.05031
		IPv4	2	-0.059708	0.05191
	fihel01	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
	frmrs01	IPv6	3	-0.287556	0.05115
		IPv4	3	-0.28748	0.05077
	gblon02	IPv6	2	0.080394	0.03334
		IPv4	2	0.080362	0.03326
	iedub01	IPv4	2	0.215375	0.05627
		IPv6	2	0.211211	0.05119
	iegwy01	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
	ittrn01	IPv4	2	0.031853	0.05779
		IPv6	2	-0.004683	0.12956
	lulux01	IPv6	3	-0.077799	0.04256
		IPv4	3	-0.077764	0.04237
	nlams01	IPv6	2	0.004494	0.02576
		IPv4	2	0.004493	0.02577
	nlams04	IPv6	3	-0.066306	0.02812
		IPv4	3	-0.066423	0.02821
	nlede01	IPv4	3	0.039081	0.02914
		IPv6	3	0.038947	0.02893
	nlhaa01	IPv6	2	-0.125609	0.02838
		IPv4	2	-0.125542	0.02844
	noosl01	IPv6	3	-0.089221	0.04686
		IPv4	3	-0.089115	0.04681
	plpoz01	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
	plwaw01	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
	ptlis01	IPv6	3	-0.03951	0.16103
		IPv4	3	0.001527	0.0976
	sesto01	IPv6	2	-0.025888	0.05423
		IPv4	2	-0.025339	0.07259
	simbx01	IPv4	2	-0.030015	0.07335
		IPv6	2	-0.029194	0.0549
us
	uschi02	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
	usdal01	IPv6	2	0.008708	0.14348
		IPv4	2	0.008717	0.14334
	usphx01	IPv6	3	-0.012629	0.15675
		IPv4	3	-0.012682	0.15678
ap
	nzwlg01	IPv4	2	0.005297	0.32053
		IPv6	2	0.002549	0.31042

Stratums: 10x excluded, 30x S2, 20x S3