`51zn.com`

DNSSEC	⚠️ Not signed
NS	`ns1.judns.com` ⚠️ Not in zone NS records
		A	47.97.51.45^{🇨🇳 Alibaba-Cloud47.96.0.0/15 Aliyun Computing Co., LTD}
NS	`ns1.julydns.com` ⚠️ Not in parent delegation
		A	47.97.51.45^{🇨🇳 Alibaba-Cloud47.96.0.0/15 Aliyun Computing Co., LTD}
NS	`ns2.judns.com` ⚠️ Not in zone NS records
		A	162.159.27.251^{Cloudflare162.159.27.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
NS	`ns2.julydns.com` ⚠️ Not in parent delegation
		A	162.159.48.223^{Cloudflare162.159.48.0/20 , 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=1776016222

Same first word

51zn.cn

51zn.net

51zn.com

Similar names

z1n5.com

zn15.cn

nz15.cn

zn51.com

nz51.net

51nz.com.cn

zn15.com

DNS History

10 records (4 active, 6 former)

●NSns1.judns.com2026-04-10 → 2026-04-12 · 2 obs

● 2026-04-10 13:01:02
● 2026-04-12 18:01:04

●NSns1.julydns.com2026-04-10 → 2026-04-12 · 2 obs

● 2026-04-10 13:01:02
● 2026-04-12 18:01:04

●NSns2.judns.com2026-04-10 → 2026-04-12 · 2 obs

● 2026-04-10 13:01:02
● 2026-04-12 18:01:04

●NSns2.julydns.com2026-04-10 → 2026-04-12 · 2 obs

● 2026-04-10 13:01:02
● 2026-04-12 18:01:04

○MXmail.skrimple.com2015-06-23 → 2016-12-30 · 4 obs

● 2015-06-23 05:01:56
● 2016-12-30 20:25:56
○ 2026-04-10 13:01:02
○ 2026-04-12 18:01:04

○A103.51.144.812016-12-30 → 2016-12-30 · 4 obs

○ 2016-04-29 12:47:24
● 2016-12-30 20:25:56
○ 2026-04-10 13:01:02
○ 2026-04-12 18:01:04

○A162.218.54.422015-06-23 → 2015-06-23 · 3 obs

● 2015-06-23 05:01:56
○ 2015-11-04 01:54:30
○ 2026-04-12 18:01:04

○A198.12.15.2442015-06-23 → 2015-06-23 · 3 obs

● 2015-06-23 05:01:56
○ 2015-11-04 01:54:30
○ 2026-04-12 18:01:04

○A65.19.157.2342016-04-29 → 2016-04-29 · 4 obs

○ 2016-01-24 08:31:04
● 2016-04-29 12:47:24
○ 2016-12-30 20:25:56
○ 2026-04-12 18:01:04

○A65.19.157.2352015-11-04 → 2016-01-24 · 5 obs

○ 2015-06-23 05:01:56
● 2015-11-04 01:54:30
● 2016-01-24 08:31:04
○ 2016-04-29 12:47:24
○ 2026-04-12 18:01:04

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	c.gtld-servers.net, h.gtld-servers.net, f.gtld-servers.net, m.gtld-servers.net...	-
51zn.com	ns1.judns.com, ns2.judns.com	2 records

✅ Authoritative Response

Server:162.159.27.251

NS records: ns1.judns.com, ns2.judns.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for 51zn.com (unsigned zone)

⏱️ Timing

Total: 522ms | Queries: -

📄 Records

Type	Count	Sample Data
NS	2	`ns1.julydns.com, ns2.julydns.com`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns1.judns.com, ns2.judns.com)

Analysis

Name Servers

51zn.com is delegated to four name servers: ns1.judns.com, ns2.judns.com, ns1.julydns.com and ns2.julydns.com.

51zn.com at least partially shares its name servers with other domains, for instance 52sjy.cn, longxihotspring.com, jinite.cn, glandsolar.com and nbazb.info.