`ydus.cn`

DNSSEC	⚠️ Not signed
A	103.148.244.67^{🇭🇰 AS401696103.148.244.0/23}
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=1772554567

`cn`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.dns.cn` ⭐
	NS	`b.dns.cn`
	NS	`c.dns.cn`
	NS	`d.dns.cn`
	NS	`e.dns.cn`
	NS	`ns.cernet.net` ⚠️ Not in parent delegation
	SOA	`a.dns.cn`root@cnnic.cn serial=2034588935

Same first word

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ydus.org

ydus.cn

ydus.com

Similar names

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ydsu.net

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dsuy.life

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duys.net

sdyu.edu.cn

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dsyu.cn

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ysud.com

sudy.hu

usyd.org

DNS History

11 records (5 active, 6 former)

○NSdns1.iidns.com2016-09-27 → 2016-09-27 · 4 obs

○ 2016-01-15 16:34:58
● 2016-09-27 03:46:32
○ 2026-03-09 08:37:08
○ 2026-03-26 09:05:56

○NSf1g1ns1.dnspod.net2015-10-24 → 2016-01-15 · 4 obs

● 2015-10-24 17:07:02
● 2016-01-15 16:34:58
○ 2016-09-27 03:46:32
○ 2026-03-26 09:05:56

○NSf1g1ns2.dnspod.net2015-10-24 → 2016-01-15 · 4 obs

● 2015-10-24 17:07:02
● 2016-01-15 16:34:58
○ 2026-03-09 08:37:08
○ 2026-03-26 09:05:56

●NSns1.judns.com2026-03-09 → 2026-03-26 · 3 obs

○ 2016-09-27 03:46:32
● 2026-03-09 08:37:08
● 2026-03-26 09:05:56

●NSns1.julydns.com2026-03-09 → 2026-03-26 · 3 obs

○ 2016-09-27 03:46:32
● 2026-03-09 08:37:08
● 2026-03-26 09:05:56

●NSns2.judns.com2026-03-09 → 2026-03-26 · 3 obs

○ 2016-09-27 03:46:32
● 2026-03-09 08:37:08
● 2026-03-26 09:05:56

●NSns2.julydns.com2026-03-09 → 2026-03-26 · 3 obs

○ 2016-09-27 03:46:32
● 2026-03-09 08:37:08
● 2026-03-26 09:05:56

●A103.148.244.672026-03-09 → 2026-03-26 · 3 obs

○ 2017-08-17 15:39:54
● 2026-03-09 08:37:08
● 2026-03-26 09:05:56

○A104.217.190.2282015-10-24 → 2015-10-24 · 3 obs

● 2015-10-24 17:07:02
○ 2016-01-15 16:34:58
○ 2026-03-26 09:05:56

○A123.108.110.782017-08-17 → 2017-08-17 · 4 obs

○ 2016-01-15 16:34:58
● 2017-08-17 15:39:54
○ 2026-03-09 08:37:08
○ 2026-03-26 09:05:56

○A43.242.200.2472026-03-09 → 2026-03-26 · 2 obs

○ 2026-03-09 08:37:08
○ 2026-03-26 09:05:56

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cn	a.dns.cn, b.dns.cn, c.dns.cn, d.dns.cn...	-
ydus.cn	ns1.judns.com, ns2.judns.com	-

✅ Authoritative Response

Server:162.159.27.251

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for ydus.cn (unsigned zone)

⏱️ Timing

Total: 1680ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`103.148.244.67`
NS	2	`ns1.julydns.com, ns2.julydns.com`
SOA	1	`ns1.julydns.com master.jmdns.com`

Analysis

IP Addresses

ydus.cn resolves to one IP number: 103.148.244.67.

other host names including gocn.for.youmibang.com, s552.com, lol.ndsfzsh.com, www.ldjbs.com and ihust.cn share IP numbers with ydus.cn.

Name Servers

ydus.cn is delegated to four name servers: ns1.judns.com, ns2.judns.com, ns1.julydns.com and ns2.julydns.com.

ydus.cn at least partially shares name servers with other domains, for instance lzkldwyy.com, risencom.cn, siweidao.net, hanshifenhedd.com and trip918.com.