`zhouzhonghua.com`

DNSSEC	⚠️ Not signed
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	`a5.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	`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	`b5.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}

`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=1777040396

Same first word

zhouzhonghua.com

DNS History

11 records (4 active, 7 former)

●NSa.share-dns.com2026-04-13 → 2026-04-24 · 3 obs

○ 2020-02-18 14:48:38
● 2026-04-13 08:11:50
● 2026-04-24 14:41:14

●NSa5.share-dns.com2026-04-13 → 2026-04-24 · 3 obs

○ 2020-02-18 14:48:38
● 2026-04-13 08:11:50
● 2026-04-24 14:41:14

●NSb.share-dns.net2026-04-13 → 2026-04-24 · 3 obs

○ 2020-02-18 14:48:38
● 2026-04-13 08:11:50
● 2026-04-24 14:41:14

●NSb5.share-dns.net2026-04-13 → 2026-04-24 · 3 obs

○ 2020-02-18 14:48:38
● 2026-04-13 08:11:50
● 2026-04-24 14:41:14

○NSjm1.dns.com2020-02-18 → 2020-02-18 · 4 obs

○ 2017-03-21 06:51:18
● 2020-02-18 14:48:38
○ 2026-04-13 08:11:50
○ 2026-04-24 14:41:14

○NSjm2.dns.com2020-02-18 → 2020-02-18 · 4 obs

○ 2017-03-21 06:51:18
● 2020-02-18 14:48:38
○ 2026-04-13 08:11:50
○ 2026-04-24 14:41:14

○NSns1.bddns.cn2015-07-08 → 2017-03-21 · 4 obs

● 2015-07-08 03:25:16
● 2017-03-21 06:51:18
○ 2020-02-18 14:48:38
○ 2026-04-24 14:41:14

○NSns2.bddns.cn2015-07-08 → 2017-03-21 · 4 obs

● 2015-07-08 03:25:16
● 2017-03-21 06:51:18
○ 2020-02-18 14:48:38
○ 2026-04-24 14:41:14

○A154.85.157.592020-02-18 → 2020-02-18 · 4 obs

○ 2017-03-21 06:51:18
● 2020-02-18 14:48:38
○ 2026-04-13 08:11:50
○ 2026-04-24 14:41:14

○A162.159.210.472015-07-08 → 2017-03-21 · 4 obs

● 2015-07-08 03:25:16
● 2017-03-21 06:51:18
○ 2020-02-18 14:48:38
○ 2026-04-24 14:41:14

○A162.159.211.472015-07-08 → 2017-03-21 · 4 obs

● 2015-07-08 03:25:16
● 2017-03-21 06:51:18
○ 2020-02-18 14:48:38
○ 2026-04-24 14:41:14

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	d.gtld-servers.net, m.gtld-servers.net, a.gtld-servers.net, k.gtld-servers.net...	-
zhouzhonghua.com	b5.share-dns.net, a5.share-dns.com	1 record

✅ Authoritative Response

Server:172.64.53.25

NS records: b5.share-dns.net, a5.share-dns.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for zhouzhonghua.com (unsigned zone)

⏱️ Timing

Total: 733ms | Queries: -

📄 Records

Type	Count	Sample Data
NS	2	`a.share-dns.com, b.share-dns.net`

📌 Glue Records Collected

Total: 1

Out-of-bailiwick: 1 (a5.share-dns.com)

Analysis

Name Servers

zhouzhonghua.com is delegated to four name servers: a5.share-dns.com, a.share-dns.com, b5.share-dns.net and b.share-dns.net.

zhouzhonghua.com at least partially shares name servers with other domains, for instance tietzsch.com.cn, perdmgroup.com, j1u8w1.com, sdthscc.com and sn-trading.com.

These name servers are commonly used together with the name servers a11.share-dns.com, b11.share-dns.net, a10.share-dns.com, b10.share-dns.net, a7.share-dns.com, b7.share-dns.net, a4.share-dns.com, b4.share-dns.net, a8.share-dns.com and b8.share-dns.net.

Host names pointing to 172.64.53.25: a5.share-dns.com and a.share-dns.com.

Host names pointing to 172.64.52.239: b5.share-dns.net and b.share-dns.net.

zhouzhonghua.com - robtex.com