knowu.com - dns.ninja

`knowu.com`

DNSSEC	⚠️ Not signed
NS	`dns29.hichina.com` ⭐
		A	2408:4009:501::37^{🇨🇳 Alibaba-Cloud2408:4009:501::/48}
		A	39.96.153.39^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	39.96.153.59^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	47.118.199.199^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	47.118.199.219^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	120.76.107.39^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	120.76.107.59^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	139.224.142.99^{🇨🇳 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,}
		A	139.224.142.109^{🇨🇳 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,}
NS	`dns30.hichina.com`
		A	2408:4009:501::38^{🇨🇳 Alibaba-Cloud2408:4009:501::/48}
		A	39.96.153.37^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	39.96.153.62^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	47.118.199.197^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	47.118.199.221^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	120.76.107.37^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	120.76.107.62^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	139.224.142.102^{🇨🇳 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,}
		A	139.224.142.107^{🇨🇳 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,}
SOA	`dns29.hichina.com`hostmaster@hichina.com 2026-01-12 #9

`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=1781421040

Same first word

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DNS History

5 records (2 active, 3 former)

○NSdns1.namesecure.com2015-07-04 → 2017-08-22 · 4 obs

● 2015-07-04 12:40:28
● 2017-08-22 05:38:44
○ 2026-03-11 10:41:20
○ 2026-06-14 07:11:14

○NSdns2.namesecure.com2015-07-04 → 2017-08-22 · 4 obs

● 2015-07-04 12:40:28
● 2017-08-22 05:38:44
○ 2026-03-11 10:41:20
○ 2026-06-14 07:11:14

●NSdns29.hichina.com2026-03-11 → 2026-06-14 · 3 obs

○ 2017-08-22 05:38:44
● 2026-03-11 10:41:20
● 2026-06-14 07:11:14

●NSdns30.hichina.com2026-03-11 → 2026-06-14 · 3 obs

○ 2017-08-22 05:38:44
● 2026-03-11 10:41:20
● 2026-06-14 07:11:14

○A205.178.189.1312015-07-04 → 2017-08-22 · 4 obs

● 2015-07-04 12:40:28
● 2017-08-22 05:38:44
○ 2026-03-11 10:41:20
○ 2026-06-14 07:11:14

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
knowu.com	dns29.hichina.com, dns30.hichina.com	18 records

✅ Authoritative Response

Server:120.76.107.39

NS records: dns29.hichina.com, dns30.hichina.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for knowu.com (unsigned zone)

⏱️ Timing

Total: 1660ms | Queries: -

📄 Records

Type	Count	Sample Data
NS	2	`dns30.hichina.com, dns29.hichina.com`
SOA	1	`dns29.hichina.com hostmaster.hichina.com`

📌 Glue Records Collected

Total: 18

Out-of-bailiwick: 18 (dns29.hichina.com, dns29.hichina.com, dns29.hichina.com...)

Analysis

Name Servers

DNS delegation for knowu.com points to two name servers: dns29.hichina.com and dns30.hichina.com.

knowu.com uses the same name servers as several other domains — among them hygyb.com, gmn-bearing.com, mycits.net and two more.

There is at least partial name server overlap between knowu.com and other domains — eaglemagnets.com, asdwas.com, zhanghao666.com and two more among them.

These name servers frequently co-occur with the name servers expirens3.hichina.com and expirens4.hichina.com.

Hostnames that resolve to 9 IP addresses:

dns29.hichina.com has IP addresses 39.96.153.39, 39.96.153.59 and 47.118.199.199, plus 6 other.

dns30.hichina.com has IP addresses 39.96.153.37, 39.96.153.62 and 47.118.199.197, plus 6 other.