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	0.314392	0.04031
		IPv4	3	0.310615	0.03299
	chzrh01	IPv6	2	0.182248	0.04707
		IPv4	2	0.178514	0.05449
	chzrh02	IPv6	3	-0.174434	0.05701
		IPv4	3	-0.171683	0.04207
	decgn01	IPv6	3	-0.056119	0.03169
		IPv4	3	-0.056089	0.03148
	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	0.188321	0.04024
		IPv6	3	0.189901	0.04352
	deham02	IPv6	3	0.011171	0.04071
		IPv4	3	0.010859	0.04013
	demuc02	IPv6	2	0.002679	0.04379
		IPv4	2	0.006624	0.05138
	dkcph01	IPv6	2	0.304759	0.03969
		IPv4	2	0.304693	0.0397
	dkcph02	IPv4	2	-0.086468	0.03773
		IPv6	2	-0.087364	0.05054
	fihel01	IPv4	3	-0.066437	0.15385
		IPv6	3	-0.032057	0.07024
	frmrs01	IPv6	2	-0.267629	0.05148
		IPv4	2	-0.267459	0.05107
	gblon02	IPv6	4	0.059449	0.0338
		IPv4	4	0.059429	0.03383
	iedub01	IPv6	2	0.408438	0.05408
		IPv4	2	0.374457	0.12334
	iegwy01	IPv6	2	0.026495	0.05377
		IPv4	2	-0.014755	0.13531
	ittrn01	IPv4	3	0.010642	0.05804
		IPv6	3	0.025768	0.08012
	lulux01	IPv6	3	-0.157595	0.03923
		IPv4	3	-0.157703	0.03587
	nlams01	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
	nlams04	IPv6	2	-0.070163	0.02814
		IPv4	2	-0.070097	0.02802
	nlede01	IPv4	2	0.038154	0.02927
		IPv6	2	0.038122	0.02893
	nlhaa01	IPv6	3	-0.081862	0.02809
		IPv4	3	-0.081808	0.02823
	noosl01	IPv6	2	0.075724	0.04704
		IPv4	2	0.075802	0.04707
	plpoz01	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
	plwaw01	IPv6	2	-0.041064	0.16869
		IPv4	2	-0.037879	0.14381
	ptlis01	IPv6	2	0.001971	0.08191
		IPv4	2	-5e-06	0.08585
	sesto01	IPv6	2	-0.031682	0.04741
		IPv4	2	-0.030648	0.07249
	simbx01	IPv4	3	-0.088645	0.1465
		IPv6	3	-0.052705	0.05441
us
	brudi01	IPv6	2	0.102635	0.25551
		IPv4	2	0.096107	0.24693
	usbos01	IPv6	3	-0.051066	0.15816
		IPv4	3	-0.055348	0.12042
	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	IPv4	4	0.008249	0.14351
		IPv6	4	0.008338	0.14351
	usphx01	IPv6	3	0.022513	0.1595
		IPv4	3	0.021822	0.15808
ap
	nzwlg01	IPv6	2	0.021484	0.42114
		IPv4	2	0.076017	0.31528

Stratums: 8x excluded, 30x S2, 24x S3, 4x S4