`duotuo.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=1774380302

Same first word

duotuo.com

Similar names

tuudoo.us

doutou.net

toudou.com

outduo.com

touduo.com

doutou.org

otudou.com

uoutdo.com

tuudoo.com

todouu.com

doutou.info

DNS History

9 records (4 active, 5 former)

○NSf1g1ns1.dnspod.net2015-04-23 → 2017-03-25 · 3 obs

● 2015-04-23 22:29:26
● 2017-03-25 21:55:50
○ 2026-03-24 19:43:14

○NSf1g1ns2.dnspod.net2015-04-23 → 2017-03-25 · 3 obs

● 2015-04-23 22:29:26
● 2017-03-25 21:55:50
○ 2026-03-24 19:43:14

●NSns1.judns.com2026-03-24 → 2026-03-24 · 2 obs

○ 2017-03-25 21:55:50
● 2026-03-24 19:43:14

●NSns1.julydns.com2026-03-24 → 2026-03-24 · 2 obs

○ 2017-03-25 21:55:50
● 2026-03-24 19:43:14

●NSns2.judns.com2026-03-24 → 2026-03-24 · 2 obs

○ 2017-03-25 21:55:50
● 2026-03-24 19:43:14

●NSns2.julydns.com2026-03-24 → 2026-03-24 · 2 obs

○ 2017-03-25 21:55:50
● 2026-03-24 19:43:14

○MXmxbiz1.qq.com2015-04-23 → 2017-03-25 · 3 obs

● 2015-04-23 22:29:26
● 2017-03-25 21:55:50
○ 2026-03-24 19:43:14

○MXmxbiz2.qq.com2015-04-23 → 2017-03-25 · 3 obs

● 2015-04-23 22:29:26
● 2017-03-25 21:55:50
○ 2026-03-24 19:43:14

○MXmxdomain.qq.com2017-03-25 → 2017-03-25 · 3 obs

○ 2015-04-23 22:29:26
● 2017-03-25 21:55:50
○ 2026-03-24 19:43:14

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	d.gtld-servers.net, e.gtld-servers.net, c.gtld-servers.net, m.gtld-servers.net...	-
duotuo.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 duotuo.com (unsigned zone)

⏱️ Timing

Total: 524ms | 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

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

duotuo.com at least partially shares name servers with other domains, for instance xuezs.com, 61448.cn, 111f7.com, aprongtai.com and gffn.cn.