DNS Coffee ☕
Zone

sina active

First Seen Mar 31, 2016 · First Import May 07, 2016 · Last Import Jul 31, 2026 · Type generic · Operator Sina Corporation · DNSSEC Signed since Sep 10, 2019 no valid signature

Also indexed as: Domain Nameserver

2
Domains
3,733
Zone Imports
5
Current Nameservers
4
Past Nameservers
Zone Growth
Nameserver Timeline
Current Nameservers 5
Name First Seen Domains
ta.ngtld.cn Jun 23, 2026 14
tb.ngtld.cn Jun 23, 2026 14
tc.ngtld.cn Jun 23, 2026 14
td.ngtld.cn Jun 23, 2026 14
te.ngtld.cn Jun 23, 2026 14
Past Nameservers 4
Name First Seen Last Seen Domains
a0.nic.sina Mar 31, 2016 Jun 29, 2026 2
a2.nic.sina Mar 31, 2016 Jun 29, 2026 2
b0.nic.sina Mar 31, 2016 Jun 29, 2026 2
c0.nic.sina Mar 31, 2016 Jun 29, 2026 2
Sample Current Domains 2
Domain Added
nic.sina Jun 19, 2026
sina Jun 18, 2026
The most recently added of the 2 domains in this zone, up to 50 — full lists via the API.
Sample Past Domains 0
No domains have left this zone recently.
The most recently removed domains that were in this zone and no longer are, up to 50 — full lists via the API.
SOA 2,369 serials
Primary NSa0.nic.sina
Mailboxhostmaster.donuts.email.
Serial1783428727
Refresh2 hours
Retry15 minutes
Expire14 days
Minimum TTL1 hour
Show 10 recent serial changes
SerialFirst SeenLast Seen
1783387495 Jul 07, 2026 Jul 07, 2026
1783300591 Jul 06, 2026 Jul 06, 2026
1783214337 Jul 05, 2026 Jul 05, 2026
1783128110 Jul 04, 2026 Jul 04, 2026
1783041231 Jul 03, 2026 Jul 03, 2026
1782954957 Jul 02, 2026 Jul 02, 2026
1782868685 Jul 01, 2026 Jul 01, 2026
1782782409 Jun 30, 2026 Jun 30, 2026
1782695504 Jun 29, 2026 Jun 29, 2026
1782609270 Jun 28, 2026 Jun 28, 2026
DNSSEC no valid signature signed

Signed since Sep 10, 2019. This zone is validation-broken: it serves no valid signature for some apex type.

Signed domains: 1 · DS records: 2 (as of Jul 31, 2026)

RoleAlgorithmPublic KeyFirst Seen
KSK RSA/SHA-256
showAwEAAdpmSm77nPyJOspk3q1T/lPK1KIx+M8OjII2SJlxfRdVswXI2fWSUWDTJGiPoDyv3urveUSn0KnnEaroulfO3Qt9JSWqokI6nWQY2bpjWYh900kwWu4/AAkZEyzMZ7Rx9HI1vVQwTnVhociZBrLrvOOjEvUlItupHsBsVgFvWy3Q5YOTKBRowJGjAooMU2MYVcbYeJ/lT+IhezzJXgdjWZzk9Arf1z9HGYKENdbqQReesm7H/XtFMp0DsUVnqvCHBt+iJuC7WybLBqOIkDTM+JUyi68rPjp6nU2dtEtWTMGzgqLVEwZ3r2QWTyEP7uxVa8kcvt+QPtMAwnE4HyhT/98=
 Jun 18, 2026
KSK RSA/SHA-256
showAwEAAcWXA/oNcZUdgEumKh53xsYLc6YGoahAx+qzcRBCnVmCrvvDJHPn142klS3JMoEuWhoEZoZpkPfgVEQytR9ro6PTn60VFW3tpKZmmaBf6XkVvBf+gQLwT4LPe8WI56HvaLNngwPEXtB9dlNCJWNtbcVim7GKb8YxYzjNcdA4Ztn6NhDQBYqmBhKDkOXXQM5k79IHmOdQPhR18lvzjZ8m3h/iJpfNMAoxfAeEIcxVsuDCBTJYHy8fxH1PIamZCC2IBDIZbjB70aYIlLMTMMo0LosiLqT5BCzV6p+I18xhGa97r91jtX0cMM5UTsnaguVGjh53zBGV9AQYcNPH7BDqo1c=
 Nov 10, 2020
ZSK RSA/SHA-256
showAwEAAcTI01k67vlMn3Spfen+S5wS9kaYYYmy/D/rn0VnER+jL0UObXj86vob7MdauoanqwuoYYNAFus9h1+/DGw08TgTcox51xFJeQDotm7sB0BBlawIbQ6aTuNB6m53vF8X4m9gnssmXvf6Np5SU/wOqPQJLm/8+wuoBBSVMuPU9BeZ
 Jun 18, 2026
ZSK RSA/SHA-256
showAwEAAeP7r/bY1AEllYQ2nHTMjiIuSSFRmuQ7zWjTQtNAc5G/tzkIyP4Coid6545BYTpwMAIc93dj06mcgrbeOlT7TCP05UluckXLKBA64ybkIDAtU7cGJPKTdjsV3RtwPaFxQJL9vfMu0/9e6QjBu1RCk8WfHoorpF3zZQfoIyCIfXvf
 May 10, 2026
SignsKey TagSignerExpires
SOA 21678 sina Jul 28, 2026
DNSKEY 39217 sina Jul 22, 2026
Signature incidents (1)

Periods this zone served no valid signature for some apex type (SOA or DNSKEY), by day.

StartEndDays
Jul 23, 2026 ongoing 9
82 retired DNSKEYs no longer published.