firstknow.com - dns.ninja

`firstknow.com`

DNSSEC	⚠️ Not signed
NS	`dns15.hichina.com` ⭐
		A	2408:4009:501::23^{🇨🇳 Alibaba-Cloud2408:4009:501::/48}
		A	39.96.153.42^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	39.96.153.52^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	47.118.199.202^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	47.118.199.212^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	120.76.107.42^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	120.76.107.52^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	139.224.142.112^{🇨🇳 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,}
		A	139.224.142.122^{🇨🇳 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,}
NS	`dns16.hichina.com`
		A	2408:4009:501::24^{🇨🇳 Alibaba-Cloud2408:4009:501::/48}
		A	39.96.153.41^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	39.96.153.51^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	47.118.199.201^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	47.118.199.211^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	120.76.107.41^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	120.76.107.51^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	139.224.142.111^{🇨🇳 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,}
		A	139.224.142.121^{🇨🇳 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,}
MX	`firstknow-com.mail.protection.partner.outlook.cn` ⭐
TXT	`v=spf1 include:spf.protection.partner.outlook.cn -all`
SOA	`dns15.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=1782513115

Same first word

firstknow.cn

firstknow.com.cn

firstknow.com

Similar names

knowfirst.de

knowfirst.io

knowfirst.org

knowfirst.ai

twinforks.com

knowfirst.co.uk

niftworks.com

knowfirst.net

frostwink.world

DNS History

11 records (3 active, 8 former)

●NSdns15.hichina.com2026-02-24 → 2026-06-26 · 3 obs

○ 2018-06-01 04:53:24
● 2026-02-24 12:50:50
● 2026-06-26 22:45:08

●NSdns16.hichina.com2026-02-24 → 2026-06-26 · 3 obs

○ 2018-06-01 04:53:24
● 2026-02-24 12:50:50
● 2026-06-26 22:45:08

○NSwww.firstknow.com2015-07-04 → 2018-06-01 · 4 obs

● 2015-07-04 06:06:00
● 2018-06-01 04:53:24
○ 2026-02-24 12:50:50
○ 2026-06-26 22:45:08

●MXfirstknow-com.mail.protection.partner.outlook.cn2026-02-24 → 2026-06-26 · 3 obs

○ 2018-06-01 04:53:24
● 2026-02-24 12:50:50
● 2026-06-26 22:45:08

○MXio.bouncemx.com2015-11-05 → 2017-01-12 · 4 obs

● 2015-11-05 03:01:42
● 2017-01-12 21:55:58
○ 2018-06-01 04:53:24
○ 2026-06-26 22:45:08

○A70.39.84.2282015-07-04 → 2015-07-04 · 3 obs

● 2015-07-04 06:06:00
○ 2018-06-01 04:53:24
○ 2026-06-26 22:45:08

○A70.39.84.2312017-01-12 → 2017-01-12 · 4 obs

○ 2016-04-13 04:11:12
● 2017-01-12 21:55:58
○ 2018-06-01 04:53:24
○ 2026-06-26 22:45:08

○A70.39.84.2332016-04-13 → 2016-04-13 · 4 obs

○ 2016-01-23 19:26:26
● 2016-04-13 04:11:12
○ 2017-01-12 21:55:58
○ 2026-06-26 22:45:08

○A70.39.84.2412015-11-05 → 2015-11-05 · 4 obs

○ 2015-07-04 06:06:00
● 2015-11-05 03:01:42
○ 2016-01-23 19:26:26
○ 2026-06-26 22:45:08

○A70.39.84.2542016-01-23 → 2016-01-23 · 4 obs

○ 2015-11-05 03:01:42
● 2016-01-23 19:26:26
○ 2016-04-13 04:11:12
○ 2026-06-26 22:45:08

○CNAMEf.dcoin.co2015-07-04 → 2018-06-01 · 4 obs

● 2015-07-04 06:06:00
● 2018-06-01 04:53:24
○ 2026-02-24 12:50:50
○ 2026-06-26 22:45:08

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net...	-
firstknow.com	dns15.hichina.com, dns16.hichina.com	18 records

✅ Authoritative Response

Server:120.76.107.42

NS records: dns15.hichina.com, dns16.hichina.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for firstknow.com (unsigned zone)

⏱️ Timing

Total: 1293ms | Queries: -

📄 Records

Type	Count	Sample Data
NS	2	`dns16.hichina.com, dns15.hichina.com`
MX	1	`firstknow-com.mail.protection.partner.ou`
TXT	1	`v=spf1 include:spf.protection.partner.ou`
SOA	1	`dns15.hichina.com hostmaster.hichina.com`

📌 Glue Records Collected

Total: 18

Out-of-bailiwick: 18 (dns15.hichina.com, dns15.hichina.com, dns15.hichina.com...)

Analysis

Name Servers

firstknow.com uses two name servers for its delegation: dns15.hichina.com and dns16.hichina.com.

firstknow.com has the same name server delegation as a number of other domains, such as supce.com, tangpafanyi.com, nxwyjk.top and two more.

The name servers of firstknow.com overlap at least partially with those of other domains — among them yougudm.com, uniqa.cn, yfeer.com and two more.

These name servers commonly appear alongside the name servers expirens3.hichina.com and expirens4.hichina.com.

Host names resolving to 9 IP numbers:

Hostname dns15.hichina.com directs to 39.96.153.42, 39.96.153.52 and 47.118.199.202 along with 6 other IP addresses.

Hostname dns16.hichina.com directs to 39.96.153.41, 39.96.153.51 and 47.118.199.201 along with 6 other IP addresses.

Mail Servers

firstknow.com routes its mail through a single mail server, firstknow-com.mail.protection.partner.outlook.cn.