`competencymastery.com`

DNSSEC	⚠️ Not signed
A	156.250.71.217^{🇿🇦 HKIDC-AS-AP156.250.64.0/18 Shenzhen Jizhan Technology Co., Ltd.}
NS	`a1.share-dns.com` ⭐ ⚠️ Not in parent delegation
		A	172.64.53.25^{🇺🇸 Cloudflare172.64.53.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
NS	`a.share-dns.com` ⚠️ Not in zone NS records
		A	172.64.53.25^{🇺🇸 Cloudflare172.64.53.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
NS	`b.share-dns.net` ⚠️ Not in zone NS records
		A	172.64.52.239^{🇺🇸 Cloudflare172.64.52.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
NS	`b1.share-dns.net` ⚠️ Not in parent delegation
		A	172.64.52.239^{🇺🇸 Cloudflare172.64.52.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
SOA	`a.share-dns.com`master@share-dns.com serial=1762352922

`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=1774600592

Previously MX for

competencymastery.com

Same first word

competencymastery.com

DNS History

9 records (5 active, 4 former)

●NSa.share-dns.com2026-03-21 → 2026-03-27 · 3 obs

○ 2017-05-31 05:15:00
● 2026-03-21 07:10:44
● 2026-03-27 08:53:00

●NSa1.share-dns.com2026-03-21 → 2026-03-27 · 3 obs

○ 2017-05-31 05:15:00
● 2026-03-21 07:10:44
● 2026-03-27 08:53:00

●NSb.share-dns.net2026-03-21 → 2026-03-27 · 3 obs

○ 2017-05-31 05:15:00
● 2026-03-21 07:10:44
● 2026-03-27 08:53:00

●NSb1.share-dns.net2026-03-21 → 2026-03-27 · 3 obs

○ 2017-05-31 05:15:00
● 2026-03-21 07:10:44
● 2026-03-27 08:53:00

○NSns1.bluehost.com2015-08-19 → 2017-05-31 · 4 obs

● 2015-08-19 03:26:50
● 2017-05-31 05:15:00
○ 2026-03-21 07:10:44
○ 2026-03-27 08:53:00

○NSns2.bluehost.com2015-08-19 → 2017-05-31 · 4 obs

● 2015-08-19 03:26:50
● 2017-05-31 05:15:00
○ 2026-03-21 07:10:44
○ 2026-03-27 08:53:00

○MXcompetencymastery.com2015-08-19 → 2017-05-31 · 4 obs

● 2015-08-19 03:26:50
● 2017-05-31 05:15:00
○ 2026-03-21 07:10:44
○ 2026-03-27 08:53:00

●A156.250.71.2172026-03-21 → 2026-03-27 · 3 obs

○ 2017-05-31 05:15:00
● 2026-03-21 07:10:44
● 2026-03-27 08:53:00

○A69.195.76.962015-08-19 → 2017-05-31 · 4 obs

● 2015-08-19 03:26:50
● 2017-05-31 05:15:00
○ 2026-03-21 07:10:44
○ 2026-03-27 08:53:00

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	i.gtld-servers.net, j.gtld-servers.net, d.gtld-servers.net, l.gtld-servers.net...	-
competencymastery.com	b1.share-dns.net, a1.share-dns.com	1 record

✅ Authoritative Response

Server:172.64.52.239

NS records: b1.share-dns.net, a1.share-dns.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for competencymastery.com (unsigned zone)

⏱️ Timing

Total: 326ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`156.250.71.217`
NS	2	`a.share-dns.com, b.share-dns.net`
SOA	1	`a.share-dns.com master.share-dns.com`

📌 Glue Records Collected

Total: 1

Out-of-bailiwick: 1 (a1.share-dns.com)

Analysis

IP Addresses

competencymastery.com points to a single IP number: 156.250.71.217.

Name Servers

competencymastery.com is delegated to four name servers: a1.share-dns.com, a.share-dns.com, b1.share-dns.net and b.share-dns.net.

competencymastery.com at least partially shares name servers with other domains, for instance hanyajj.com, qiuyouplay.com, xxtv69.com, gl5.net and vieem.com.

These name servers are commonly used together with the name servers a7.share-dns.com, b7.share-dns.net, a3.share-dns.com, b3.share-dns.net, a6.share-dns.com, b6.share-dns.net, a4.share-dns.com, b4.share-dns.net, a12.share-dns.com and b12.share-dns.net.

Host names pointing to 172.64.53.25: a1.share-dns.com and a.share-dns.com.

Host names pointing to 172.64.52.239: b1.share-dns.net and b.share-dns.net.

competencymastery.com - robtex.com