ducool.cn - dns.ninja

ducool.cn

DNSSEC⚠️ Not signed
NSdns13.hichina.com ⚠️ Not in zone NS records
A2408:4009:501::21🇨🇳 Alibaba-Cloud2408:4009:501::/48
A39.96.153.42🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC
A39.96.153.52🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC
A47.118.199.202🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.
A47.118.199.212🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.
A120.76.107.42🇨🇳 Alibaba-Cloud120.76.0.0/17
A120.76.107.52🇨🇳 Alibaba-Cloud120.76.0.0/17
A139.224.142.112🇨🇳 Alibaba-Cloud139.224.128.0/17 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,
A139.224.142.122🇨🇳 Alibaba-Cloud139.224.128.0/17 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,
NSdns14.hichina.com ⚠️ Not in zone NS records
A2408:4009:501::22🇨🇳 Alibaba-Cloud2408:4009:501::/48
A39.96.153.41🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC
A39.96.153.51🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC
A47.118.199.201🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.
A47.118.199.211🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.
A120.76.107.41🇨🇳 Alibaba-Cloud120.76.0.0/17
A120.76.107.51🇨🇳 Alibaba-Cloud120.76.0.0/17
A139.224.142.111🇨🇳 Alibaba-Cloud139.224.128.0/17 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,
A139.224.142.121🇨🇳 Alibaba-Cloud139.224.128.0/17 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,

cn

DNSSEC🔒 Signed (DS record present)
NSa.dns.cn ⭐
NSb.dns.cn
NSc.dns.cn
NSd.dns.cn
NSe.dns.cn
NSns.cernet.net ⚠️ Not in parent delegation
SOAa.dns.cnroot@cnnic.cn serial=2034926486

Same first word

ducool.cn
ducool.com

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DNS History

5 records (2 active, 3 former)

20162017201820192020202120222023202420252026NSdns13.hichina.comdns14.hichina.comMXmxbiz1.qq.commxbiz2.qq.comA60.205.21.149
●NSdns13.hichina.com2015-07-03 → 2026-06-17 · 2 obs
● 2015-07-03 13:42:24
● 2026-06-17 00:22:08
●NSdns14.hichina.com2015-07-03 → 2026-06-17 · 2 obs
● 2015-07-03 13:42:24
● 2026-06-17 00:22:08
○MXmxbiz1.qq.com2015-07-03 → 2026-04-16 · 3 obs
● 2015-07-03 13:42:24
● 2026-04-16 04:57:38
○ 2026-06-17 00:22:08
○MXmxbiz2.qq.com2015-07-03 → 2026-04-16 · 3 obs
● 2015-07-03 13:42:24
● 2026-04-16 04:57:38
○ 2026-06-17 00:22:08
○A60.205.21.1492026-03-17 → 2026-04-16 · 3 obs
● 2026-03-17 15:23:42
● 2026-04-16 04:57:38
○ 2026-06-17 00:22:08

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
cna.dns.cn, b.dns.cn, c.dns.cn, d.dns.cn...-
ducool.cndns13.hichina.com, dns14.hichina.com-

✅ Authoritative Response

Server:47.118.199.201

NS records: dns13.hichina.com, dns14.hichina.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for ducool.cn (unsigned zone)

⏱️ Timing

Total: 4005ms | Queries: -

📄 Records

TypeCountSample Data
A160.205.21.149
NS2dns14.hichina.com, dns13.hichina.com
MX2mxbiz1.qq.com (pri: 5), mxbiz2.qq.com (pri: 10)
SOA1dns13.hichina.com hostmaster.hichina.com

Analysis

Name Servers

ducool.cn is served by two delegated name servers, dns13.hichina.com and dns14.hichina.com.

ducool.cn has the same name server delegation as a number of other domains, such as lonwinchem.com, leafgarden.com, actintl.com.cn and two more.

At least some of ducool.cn's name servers are shared with other domains, for example niguaipa.xyz and chinlus.com.

These name servers tend to be deployed in combination with the name servers expirens3.hichina.com and expirens4.hichina.com.

Host names resolving to 9 IP numbers:

dns13.hichina.com carries IP addresses 39.96.153.42, 39.96.153.52 and 47.118.199.202, with 6 other addresses beyond those.

dns14.hichina.com carries IP addresses 39.96.153.41, 39.96.153.51 and 47.118.199.201, with 6 other addresses beyond those.