`51duofan.com`

DNSSEC	⚠️ Not signed
A	38.239.69.82^{🇺🇸 HDHK38.239.64.0/20}
NS	`ns1.julydns.com` ⭐ ⚠️ Not in parent delegation
		A	47.97.51.45^{🇨🇳 Alibaba-Cloud47.96.0.0/15 Aliyun Computing Co., LTD}
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	`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}
SOA	`ns1.julydns.com`master@jmdns.com serial=1767267508

`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=1775988632

Same first word

51duofan.com

DNS History

14 records (5 active, 9 former)

○NSa.dnspod.com2020-02-16 → 2020-02-16 · 3 obs

○ 2017-03-21 12:48:36
● 2020-02-16 03:34:26
○ 2026-04-12 10:26:40

○NSb.dnspod.com2020-02-16 → 2020-02-16 · 3 obs

○ 2017-03-21 12:48:36
● 2020-02-16 03:34:26
○ 2026-04-12 10:26:40

○NSc.dnspod.com2020-02-16 → 2020-02-16 · 3 obs

○ 2017-03-21 12:48:36
● 2020-02-16 03:34:26
○ 2026-04-12 10:26:40

○NSdns23.hichina.com2015-08-01 → 2017-03-21 · 4 obs

● 2015-08-01 12:39:08
● 2017-03-21 12:48:36
○ 2020-02-16 03:34:26
○ 2026-04-12 10:26:40

○NSdns24.hichina.com2015-08-01 → 2017-03-21 · 4 obs

● 2015-08-01 12:39:08
● 2017-03-21 12:48:36
○ 2020-02-16 03:34:26
○ 2026-04-12 10:26:40

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

○ 2020-02-16 03:34:26
● 2026-04-12 10:26:40

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

○ 2020-02-16 03:34:26
● 2026-04-12 10:26:40

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

○ 2020-02-16 03:34:26
● 2026-04-12 10:26:40

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

○ 2020-02-16 03:34:26
● 2026-04-12 10:26:40

○MXmxbiz1.qq.com2015-08-01 → 2017-03-21 · 4 obs

● 2015-08-01 12:39:08
● 2017-03-21 12:48:36
○ 2020-02-16 03:34:26
○ 2026-04-12 10:26:40

○MXmxbiz2.qq.com2015-08-01 → 2017-03-21 · 4 obs

● 2015-08-01 12:39:08
● 2017-03-21 12:48:36
○ 2020-02-16 03:34:26
○ 2026-04-12 10:26:40

○A121.40.149.1662015-08-01 → 2017-03-21 · 4 obs

● 2015-08-01 12:39:08
● 2017-03-21 12:48:36
○ 2020-02-16 03:34:26
○ 2026-04-12 10:26:40

○A154.83.169.192020-02-16 → 2020-02-16 · 3 obs

○ 2017-03-21 12:48:36
● 2020-02-16 03:34:26
○ 2026-04-12 10:26:40

●A38.239.69.822026-04-12 → 2026-04-12 · 2 obs

○ 2020-02-16 03:34:26
● 2026-04-12 10:26:40

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	i.gtld-servers.net, e.gtld-servers.net, g.gtld-servers.net, a.gtld-servers.net...	-
51duofan.com	ns1.judns.com, ns2.judns.com	2 records

✅ Authoritative Response

Server:47.97.51.45

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

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

⏱️ Timing

Total: 506ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`38.239.69.82`
NS	2	`ns1.julydns.com, ns2.julydns.com`
SOA	1	`ns1.julydns.com master.jmdns.com`

📌 Glue Records Collected

Total: 2

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

Analysis

IP Addresses

51duofan.com resolves to one IP number: 38.239.69.82.

Other host names, for instance vipner.com, share IP numbers with 51duofan.com.

Name Servers

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

51duofan.com at least partially shares name servers with other domains, for instance ningtop.com, denovo-group.com, fs36099.com, szmy998.cn and gdchangli.com.