studyok.com - dns.ninja

`studyok.com`

DNSSEC	⚠️ Not signed
A	13.248.169.48^{🇺🇸 Amazon13.248.160.0/20}
		PTR	`a904c694c05102f30.awsglobalaccelerator.com`
A	76.223.54.146^{🇺🇸 Amazon76.223.48.0/20}
NS	`dns25.hichina.com` ⭐ ⚠️ Not in parent delegation
		A	2408:4009:501::33^{🇨🇳 Alibaba-Cloud2408:4009:501::/48}
		A	39.96.153.39^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	39.96.153.59^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	47.118.199.199^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	47.118.199.219^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	120.76.107.39^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	120.76.107.59^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	139.224.142.99^{🇨🇳 Alibaba-Cloud139.224.128.0/17 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,}
		A	139.224.142.109^{🇨🇳 Alibaba-Cloud139.224.128.0/17 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,}
NS	`dns.sharknames.com` ⚠️ Not in zone NS records
		A	192.161.163.150^{🇺🇸 Colocrossing-AS192.161.163.0/24}
NS	`dns26.hichina.com` ⚠️ Not in parent delegation
		A	2408:4009:501::34^{🇨🇳 Alibaba-Cloud2408:4009:501::/48}
		A	39.96.153.37^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	39.96.153.62^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	47.118.199.197^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	47.118.199.221^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	120.76.107.37^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	120.76.107.62^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	139.224.142.102^{🇨🇳 Alibaba-Cloud139.224.128.0/17 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,}
		A	139.224.142.107^{🇨🇳 Alibaba-Cloud139.224.128.0/17 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,}
NS	`fastdns.sharknames.com` ⚠️ Not in zone NS records
		A	192.227.249.69^{🇺🇸 Colocrossing-AS192.227.248.0/23}
			PTR	`192-227-249-69-host.colocrossing.com`
NS	`ns1.alidns.com` ⚠️ Not in zone NS records
		A	2408:4009:501::1^{🇨🇳 Alibaba-Cloud2408:4009:501::/48}
		A	39.96.153.45^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	39.96.153.55^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	47.118.199.205^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	47.118.199.215^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	120.76.107.45^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	120.76.107.55^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	139.224.142.115^{🇨🇳 Alibaba-Cloud139.224.128.0/17 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,}
		A	139.224.142.125^{🇨🇳 Alibaba-Cloud139.224.128.0/17 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,}
NS	`ns2.alidns.com` ⚠️ Not in zone NS records
		A	2408:4009:501::2^{🇨🇳 Alibaba-Cloud2408:4009:501::/48}
		A	39.96.153.46^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	39.96.153.56^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	47.118.199.206^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	47.118.199.216^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	120.76.107.46^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	120.76.107.56^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	139.224.142.116^{🇨🇳 Alibaba-Cloud139.224.128.0/17 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,}
		A	139.224.142.126^{🇨🇳 Alibaba-Cloud139.224.128.0/17 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,}
NS	`ns3.afternic.com` ⚠️ Not in zone NS records
		A	97.74.98.65^{🇺🇸 GODADDY-DNS97.74.98.0/23}
			PTR	`ns3.afternic.com`
NS	`opendns.sharknames.com` ⚠️ Not in zone NS records
		A	107.174.240.70^{🇺🇸 Colocrossing-AS107.174.240.0/22 Proxy for Colocrossing Wowrack Customers}
			PTR	`107-174-240-70-host.colocrossing.com`
NS	`prodns.sharknames.com` ⚠️ Not in zone NS records
		A	172.245.79.147^{🇺🇸 Colocrossing-AS172.245.78.0/23}
			PTR	`172-245-79-147-host.colocrossing.com`
NS	`smartdns.sharknames.com` ⚠️ Not in zone NS records
		A	192.227.209.8^{🇺🇸 Colocrossing-AS192.227.208.0/21}
			PTR	`192-227-209-8-host.colocrossing.com`
TXT	`4.cn-verify-97921`
TXT	`1f970a8fdeccd5167a3d8ca664a8927841bf21fd`
TXT	`eeaec24e55c54b11bc07ae6a55b0de4a`
TXT	`7WQVw8dCk03L9H9hNh`
TXT	`8573a79c532402041c034b4acc49bbc1`
TXT	`domainov.aliyun.com`
TXT	`4aec7b26-b5e9-4807-b84f-52ac7b7037e5`
TXT	`afternic-verification-6VusC7cQNjFLaPUksRVtiy`
TXT	`e6119f335f3fccdbdf639a4f78c675e76af91ed6`
SOA	`dns25.hichina.com`hostmaster@hichina.com 2026-01-09 #13

`com`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.gtld-servers.net` ⭐
	NS	`b.gtld-servers.net`
	NS	`c.gtld-servers.net`
	NS	`d.gtld-servers.net`
	NS	`e.gtld-servers.net`
	NS	`f.gtld-servers.net`
	NS	`g.gtld-servers.net`
	NS	`h.gtld-servers.net`
	NS	`i.gtld-servers.net`
	NS	`j.gtld-servers.net`
	NS	`k.gtld-servers.net`
	NS	`l.gtld-servers.net`
	NS	`m.gtld-servers.net`
	SOA	`a.gtld-servers.net`nstld@verisign-grs.com serial=1780574704

Same first word

studyok.com

Similar names

udosykt.ru

DNS History

24 records (12 active, 12 former)

●NSdns.sharknames.com2026-02-21 → 2026-06-04 · 3 obs

○ 2017-06-21 10:44:34
● 2026-02-21 10:24:14
● 2026-06-04 12:29:00

●NSdns25.hichina.com2026-05-03 → 2026-06-04 · 8 obs

○ 2026-04-09 20:25:24
● 2026-05-03 21:49:44
○ 2026-05-16 06:32:46
● 2026-05-17 23:50:14
○ 2026-05-22 03:12:58
○ 2026-05-24 23:07:44
● 2026-05-31 12:35:02
● 2026-06-04 12:29:00

●NSdns26.hichina.com2026-05-17 → 2026-06-04 · 6 obs

○ 2026-05-16 06:32:46
● 2026-05-17 23:50:14
○ 2026-05-22 03:12:58
○ 2026-05-24 23:07:44
● 2026-05-31 12:35:02
● 2026-06-04 12:29:00

●NSfastdns.sharknames.com2026-02-21 → 2026-06-04 · 3 obs

○ 2017-06-21 10:44:34
● 2026-02-21 10:24:14
● 2026-06-04 12:29:00

●NSns1.alidns.com2026-02-21 → 2026-06-04 · 3 obs

○ 2017-06-21 10:44:34
● 2026-02-21 10:24:14
● 2026-06-04 12:29:00

○NSns1.sedoparking.com2015-08-02 → 2016-09-07 · 4 obs

● 2015-08-02 06:34:42
● 2016-09-07 23:00:46
○ 2017-06-21 10:44:34
○ 2026-06-04 12:29:00

○NSns1650.ztomy.com2017-06-21 → 2017-06-21 · 4 obs

○ 2016-09-07 23:00:46
● 2017-06-21 10:44:34
○ 2026-02-21 10:24:14
○ 2026-06-04 12:29:00

●NSns2.alidns.com2026-02-21 → 2026-06-04 · 3 obs

○ 2017-06-21 10:44:34
● 2026-02-21 10:24:14
● 2026-06-04 12:29:00

○NSns2.sedoparking.com2015-08-02 → 2016-09-07 · 4 obs

● 2015-08-02 06:34:42
● 2016-09-07 23:00:46
○ 2017-06-21 10:44:34
○ 2026-06-04 12:29:00

○NSns2650.ztomy.com2017-06-21 → 2017-06-21 · 4 obs

○ 2016-09-07 23:00:46
● 2017-06-21 10:44:34
○ 2026-02-21 10:24:14
○ 2026-06-04 12:29:00

●NSns3.afternic.com2026-02-21 → 2026-06-04 · 3 obs

○ 2017-06-21 10:44:34
● 2026-02-21 10:24:14
● 2026-06-04 12:29:00

○NSns4.afternic.com2026-04-09 → 2026-05-24 · 8 obs

○ 2026-02-21 10:24:14
● 2026-04-09 20:25:24
○ 2026-05-03 21:49:44
○ 2026-05-22 03:12:58
● 2026-05-23 12:54:20
● 2026-05-24 23:07:44
○ 2026-05-31 12:35:02
○ 2026-06-04 12:29:00

●NSopendns.sharknames.com2026-02-21 → 2026-06-04 · 3 obs

○ 2017-06-21 10:44:34
● 2026-02-21 10:24:14
● 2026-06-04 12:29:00

●NSprodns.sharknames.com2026-02-21 → 2026-06-04 · 3 obs

○ 2017-06-21 10:44:34
● 2026-02-21 10:24:14
● 2026-06-04 12:29:00

●NSsmartdns.sharknames.com2026-02-21 → 2026-06-04 · 3 obs

○ 2017-06-21 10:44:34
● 2026-02-21 10:24:14
● 2026-06-04 12:29:00

○MXlocalhost2016-09-07 → 2016-09-07 · 4 obs

○ 2016-03-14 15:33:04
● 2016-09-07 23:00:46
○ 2017-06-21 10:44:34
○ 2026-06-04 12:29:00

○MXmail.nickstel.com2015-08-02 → 2016-03-14 · 4 obs

● 2015-08-02 06:34:42
● 2016-03-14 15:33:04
○ 2016-09-07 23:00:46
○ 2026-06-04 12:29:00

●A13.248.169.482026-02-27 → 2026-06-04 · 10 obs

○ 2026-02-21 13:12:28
● 2026-02-27 16:25:10
● 2026-03-08 05:22:32
○ 2026-03-16 01:12:30
○ 2026-03-21 01:03:50
● 2026-04-09 20:25:24
○ 2026-05-03 21:49:44
○ 2026-05-24 23:07:44
● 2026-05-31 12:35:02
● 2026-06-04 12:29:00

○A204.11.56.502017-06-21 → 2017-06-21 · 4 obs

○ 2016-09-07 23:00:46
● 2017-06-21 10:44:34
○ 2026-02-21 10:24:14
○ 2026-06-04 12:29:00

○A47.76.45.782026-02-21 → 2026-05-24 · 13 obs

○ 2017-06-21 10:44:34
● 2026-02-21 10:24:14
● 2026-02-21 13:12:28
○ 2026-02-27 16:25:10
○ 2026-03-08 05:22:32
● 2026-03-16 01:12:30
● 2026-03-17 23:38:28
○ 2026-03-21 01:03:50
○ 2026-05-03 21:49:44
● 2026-05-16 06:32:46
● 2026-05-24 23:07:44
○ 2026-05-31 12:35:02
○ 2026-06-04 12:29:00

○A72.52.4.1192015-08-02 → 2016-09-07 · 4 obs

● 2015-08-02 06:34:42
● 2016-09-07 23:00:46
○ 2017-06-21 10:44:34
○ 2026-06-04 12:29:00

●A76.223.54.1462026-02-27 → 2026-06-04 · 10 obs

○CNAMEparking.sharknames.com2026-02-21 → 2026-05-24 · 10 obs

● 2026-02-21 10:24:14
○ 2026-02-21 13:12:28
○ 2026-02-27 16:25:10
● 2026-03-08 05:22:32
● 2026-03-16 01:12:30
○ 2026-03-17 23:38:28
○ 2026-05-23 12:54:20
● 2026-05-24 23:07:44
○ 2026-05-31 12:35:02
○ 2026-06-04 12:29:00

○PTRns1650.ztomy.com2017-06-21 → 2017-06-21 · 3 obs

● 2017-06-21 10:44:34
○ 2026-02-21 10:24:14
○ 2026-06-04 12:29:00

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
studyok.com	ns3.afternic.com, ns1.alidns.com, ns2.alidns.com, dns.sharknames.com...	24 records

✅ Authoritative Response

Server:192.161.163.150

NS records: ns3.afternic.com, ns1.alidns.com, ns2.alidns.com, dns.sharknames.com, prodns.sharknames.com, fastdns.sharknames.com, opendns.sharknames.com, smartdns.sharknames.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for studyok.com (unsigned zone)

⏱️ Timing

Total: 625ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`47.76.45.78`
NS	2	`ns3.afternic.com, ns4.afternic.com`
TXT	1	`v=spf1 -all`

📌 Glue Records Collected

Total: 24

Out-of-bailiwick: 24 (ns3.afternic.com, ns1.alidns.com, ns1.alidns.com...)

Analysis

IP Addresses

studyok.com points to two IP numbers: 13.248.169.48 and 76.223.54.146.

Additional host names — alkarak.com, wrinklecreams.org, modelslikeus.com and two others — share IP numbers with studyok.com.

Name Servers

studyok.com is delegated to 10 name servers: ns3.afternic.com, ns1.alidns.com, ns2.alidns.com and seven others.

At least some of studyok.com's name servers are shared with other domains, for example safezilla.com, chinagay(0x706f726e).com, plvp.cn and two more.

These name servers are frequently used alongside dns.sharknames.com, fastdns.sharknames.com, opendns.sharknames.com and seven others.

Host names with 9 IP numbers:

ns1.alidns.com points to 39.96.153.45, 39.96.153.55, 47.118.199.205 and six other IP addresses.

ns2.alidns.com points to 39.96.153.46, 39.96.153.56, 47.118.199.206 and six other IP addresses.

dns25.hichina.com points to 39.96.153.39, 39.96.153.59, 47.118.199.199 and six other IP addresses.

dns26.hichina.com points to 39.96.153.37, 39.96.153.62, 47.118.199.197 and six other IP addresses.

Host names with one IP number:

The hostname ns3.afternic.com resolves to 97.74.98.65.

The hostname dns.sharknames.com resolves to 192.161.163.150.

The hostname fastdns.sharknames.com resolves to 192.227.249.69.

The hostname opendns.sharknames.com resolves to 107.174.240.70.

The hostname prodns.sharknames.com resolves to 172.245.79.147.

The hostname smartdns.sharknames.com resolves to 192.227.209.8.