`guangmaoschool.com`

DNSSEC	⚠️ Not signed
A	156.240.250.28^{🇭🇰 TCLOUDNET156.240.250.0/24 Tcloudnet, Inc}
NS	`a10.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	`b10.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=1752734180

`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=1786063189

Subdomains

www.guangmaoschool.com

Same first word

guangmaoschool.com

DNS History

14 records (5 active, 9 former)

●NSa.share-dns.com2026-07-15 → 2026-08-07 · 3 obs

○ 2019-03-10 20:50:12
● 2026-07-15 05:16:06
● 2026-08-07 01:01:52

●NSa10.share-dns.com2026-07-15 → 2026-08-07 · 3 obs

○ 2019-03-10 20:50:12
● 2026-07-15 05:16:06
● 2026-08-07 01:01:52

●NSb.share-dns.net2026-07-15 → 2026-08-07 · 3 obs

○ 2019-03-10 20:50:12
● 2026-07-15 05:16:06
● 2026-08-07 01:01:52

●NSb10.share-dns.net2026-07-15 → 2026-08-07 · 3 obs

○ 2019-03-10 20:50:12
● 2026-07-15 05:16:06
● 2026-08-07 01:01:52

○NSce1.dns.com2019-03-10 → 2019-03-10 · 4 obs

○ 2017-02-01 07:16:14
● 2019-03-10 20:50:12
○ 2026-07-15 05:16:06
○ 2026-08-07 01:01:52

○NSce2.dns.com2019-03-10 → 2019-03-10 · 4 obs

○ 2017-02-01 07:16:14
● 2019-03-10 20:50:12
○ 2026-07-15 05:16:06
○ 2026-08-07 01:01:52

○NSns3.ce.net.cn2015-07-08 → 2017-02-01 · 4 obs

● 2015-07-08 14:12:46
● 2017-02-01 07:16:14
○ 2019-03-10 20:50:12
○ 2026-08-07 01:01:52

○MXmail.guangmaoschool.com2015-07-08 → 2019-03-10 · 4 obs

● 2015-07-08 14:12:46
● 2019-03-10 20:50:12
○ 2026-07-15 05:16:06
○ 2026-08-07 01:01:52

○MXmail1.guangmaoschool.com2015-07-08 → 2019-03-10 · 4 obs

● 2015-07-08 14:12:46
● 2019-03-10 20:50:12
○ 2026-07-15 05:16:06
○ 2026-08-07 01:01:52

○A120.133.2.802019-03-10 → 2019-03-10 · 4 obs

○ 2017-02-01 07:16:14
● 2019-03-10 20:50:12
○ 2026-07-15 05:16:06
○ 2026-08-07 01:01:52

○A122.114.53.1592015-07-08 → 2016-02-06 · 4 obs

● 2015-07-08 14:12:46
● 2016-02-06 07:17:08
○ 2016-05-03 18:17:46
○ 2026-08-07 01:01:52

○A124.173.69.2122017-02-01 → 2017-02-01 · 4 obs

○ 2016-05-03 18:17:46
● 2017-02-01 07:16:14
○ 2019-03-10 20:50:12
○ 2026-08-07 01:01:52

●A156.240.250.282026-07-15 → 2026-08-07 · 3 obs

○ 2019-03-10 20:50:12
● 2026-07-15 05:16:06
● 2026-08-07 01:01:52

○A61.139.126.1162016-05-03 → 2016-05-03 · 4 obs

○ 2016-02-06 07:17:08
● 2016-05-03 18:17:46
○ 2017-02-01 07:16:14
○ 2026-08-07 01:01:52

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	e.gtld-servers.net, l.gtld-servers.net, g.gtld-servers.net, h.gtld-servers.net...	-
guangmaoschool.com	b10.share-dns.net, a10.share-dns.com	1 record

✅ Authoritative Response

Server:172.64.52.239

NS records: b10.share-dns.net, a10.share-dns.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for guangmaoschool.com (unsigned zone)

⏱️ Timing

Total: 302ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`156.240.250.28`
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 (a10.share-dns.com)

Analysis

Hierarchy

www.guangmaoschool.com is delegated beneath guangmaoschool.com.

IP Addresses

guangmaoschool.com points to a single IP number: 156.240.250.28.

Other host names, such as www.guangmaoschool.com, share IP numbers with guangmaoschool.com.

Name Servers

guangmaoschool.com has four authoritative name servers: a10.share-dns.com, a.share-dns.com, b10.share-dns.net and b.share-dns.net.

There is at least partial name server overlap between guangmaoschool.com and other domains — sdgtez.com, yxdbsy.com, 275ai.com and two more among them.

These name servers regularly appear alongside a5.share-dns.com, b5.share-dns.net, a11.share-dns.com and 7 other name servers in NS record sets.

a10.share-dns.com and a.share-dns.com each resolve to 172.64.53.25, while b10.share-dns.net and b.share-dns.net each resolve to 172.64.52.239.

a10.share-dns.com and a.share-dns.com are host names that each point to 172.64.53.25 IP addresses.

b10.share-dns.net and b.share-dns.net are host names that each point to 172.64.52.239 IP addresses.

guangmaoschool.com - robtex.com