exercisek.com - dns.ninja

`exercisek.com`

DNSSEC	⚠️ Not signed
A	104.18.3.157^{Cloudflare104.18.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
NS	`dns13.hichina.com` ⭐
		A	2408:4009:501::21^{🇨🇳 Alibaba-Cloud2408:4009:501::/48}
		A	39.96.153.42^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	39.96.153.52^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	47.118.199.202^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	47.118.199.212^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	120.76.107.42^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	120.76.107.52^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	139.224.142.112^{🇨🇳 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	139.224.142.122^{🇨🇳 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	`dns14.hichina.com`
		A	2408:4009:501::22^{🇨🇳 Alibaba-Cloud2408:4009:501::/48}
		A	39.96.153.41^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	39.96.153.51^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	47.118.199.201^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	47.118.199.211^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	120.76.107.41^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	120.76.107.51^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	139.224.142.111^{🇨🇳 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	139.224.142.121^{🇨🇳 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,}
MX	`mail.exercisek.com` ⭐
		A	47.254.92.90^{🇺🇸 Alibaba-Cloud47.254.64.0/18 Proxy-registered route object}
TXT	`v=spf1 ip4:47.254.92.90~all`
SOA	`dns13.hichina.com`hostmaster@hichina.com 2026-01-12 #9

`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=1786317769

⚠️ On DNS blocklist: tif

Subdomains

mail.exercisek.com

Same first word

exercisek.com

DNS History

4 records (4 active, 0 former)

●NSdns13.hichina.com2026-03-16 → 2026-08-09 · 2 obs

● 2026-03-16 18:59:08
● 2026-08-09 23:42:22

●NSdns14.hichina.com2026-03-16 → 2026-08-09 · 2 obs

● 2026-03-16 18:59:08
● 2026-08-09 23:42:22

●MXmail.exercisek.com2026-03-16 → 2026-08-09 · 2 obs

● 2026-03-16 18:59:08
● 2026-08-09 23:42:22

●A104.18.3.1572026-03-16 → 2026-08-09 · 2 obs

● 2026-03-16 18:59:08
● 2026-08-09 23:42:22

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net...	-
exercisek.com	dns13.hichina.com, dns14.hichina.com	18 records

✅ Authoritative Response

Server:120.76.107.42

NS records: dns13.hichina.com, dns14.hichina.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for exercisek.com (unsigned zone)

⏱️ Timing

Total: 544ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`104.18.3.157`
NS	2	`dns13.hichina.com, dns14.hichina.com`
MX	1	`mail.exercisek.com (pri: 1)`
TXT	1	`v=spf1 ip4:47.254.92.90~all`
SOA	1	`dns13.hichina.com hostmaster.hichina.com`

📌 Glue Records Collected

Total: 18

Out-of-bailiwick: 18 (dns13.hichina.com, dns13.hichina.com, dns13.hichina.com...)

Analysis

Hierarchy

exercisek.com is a parent domain of mail.exercisek.com.

IP Addresses

exercisek.com resolves to just one IP address, 104.18.3.157.

Two other host names, along with independentl.com, handyitself.com and www.fillethumn.com, also share IP numbers with exercisek.com.

Name Servers

exercisek.com has two authoritative name servers — dns13.hichina.com and dns14.hichina.com.

exercisek.com shares its NS records with other domains, for example lzmls.cn, sdminr.com, xyzhf.com and two others.

exercisek.com shares at least some of its name servers with other domains, including gotn.org, tepaopen.org, richconch.com and two others.

These name servers are frequently paired with the name servers expirens3.hichina.com and expirens4.hichina.com.

DNS names with 9 IP addresses:

dns13.hichina.com points to 39.96.153.42, 39.96.153.52, 47.118.199.202 and 6 other IP addresses.

dns14.hichina.com points to 39.96.153.41, 39.96.153.51, 47.118.199.201 and 6 other IP addresses.

Mail Servers

The sole mail server for exercisek.com is mail.exercisek.com.

mail.exercisek.com points to one IP number — 47.254.92.90.