`doubleknock.com`

DNSSEC	⚠️ Not signed
A	2620:127:f00f:a::^{🇨🇦 Cloudflare2620:127:f00f::/48 151 O'Connor Street, Ground floor Ottawa ON K2P 2L8 Canada}
A	23.227.38.70^{🇨🇦 Cloudflare23.227.38.0/23 Shopify 151 O'Connor Street, Ground floor Ottawa ON K2P 2L8 Canada}
NS	`ns-cloud-a1.googledomains.com` ⭐
		A	2001:4860:4802:32::6a^{🇺🇸 Google2001:4860::/32}
			PTR	`ns-cloud-a1.googledomains.com`
		A	216.239.32.106^{🇺🇸 Google216.239.32.0/24}
			PTR	`ns-cloud-a1.googledomains.com`
NS	`ns-cloud-a2.googledomains.com`
		A	2001:4860:4802:34::6a^{🇺🇸 Google2001:4860::/32}
			PTR	`ns-cloud-a2.googledomains.com`
		A	216.239.34.106^{🇺🇸 Google216.239.34.0/24}
			PTR	`ns-cloud-a2.googledomains.com`
NS	`ns-cloud-a3.googledomains.com`
		A	2001:4860:4802:36::6a^{🇺🇸 Google2001:4860::/32}
			PTR	`ns-cloud-a3.googledomains.com`
		A	216.239.36.106^{🇺🇸 Google216.239.36.0/24}
			PTR	`ns-cloud-a3.googledomains.com`
NS	`ns-cloud-a4.googledomains.com`
		A	2001:4860:4802:38::6a^{🇺🇸 Google2001:4860::/32}
			PTR	`ns-cloud-a4.googledomains.com`
		A	216.239.38.106^{🇺🇸 Google216.239.38.0/24}
			PTR	`ns-cloud-a4.googledomains.com`
MX	`mx.doubleknock.com.cust.b.hostedemail.com` ⭐
		A	64.98.38.4^{🇨🇦 TUCOWS-364.98.38.0/24 IPv4 Allow}
			PTR	`mx.b.hostedemail.com`
TXT	`v=spf1 include:_spf.hostedemail.com ~all`
SOA	`ns-cloud-a1.googledomains.com`cloud-dns-hostmaster@google.com serial=1

`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=1771291435

Same first word

doubleknock.com

DNS History

13 records (7 active, 6 former)

○NSf1g1ns1.dnspod.net2015-11-24 → 2016-07-11 · 4 obs

● 2015-11-24 13:39:28
● 2016-07-11 08:47:28
○ 2017-04-02 16:42:56
○ 2026-03-24 09:35:54

●NSns-cloud-a1.googledomains.com2026-02-23 → 2026-03-24 · 3 obs

○ 2017-04-02 16:42:56
● 2026-02-23 18:43:44
● 2026-03-24 09:35:54

●NSns-cloud-a2.googledomains.com2026-02-23 → 2026-03-24 · 3 obs

○ 2017-04-02 16:42:56
● 2026-02-23 18:43:44
● 2026-03-24 09:35:54

●NSns-cloud-a3.googledomains.com2026-02-23 → 2026-03-24 · 3 obs

○ 2017-04-02 16:42:56
● 2026-02-23 18:43:44
● 2026-03-24 09:35:54

●NSns-cloud-a4.googledomains.com2026-02-23 → 2026-03-24 · 3 obs

○ 2017-04-02 16:42:56
● 2026-02-23 18:43:44
● 2026-03-24 09:35:54

○NSns57.domaincontrol.com2017-04-02 → 2017-04-02 · 4 obs

○ 2016-07-11 08:47:28
● 2017-04-02 16:42:56
○ 2026-02-23 18:43:44
○ 2026-03-24 09:35:54

○NSns58.domaincontrol.com2017-04-02 → 2017-04-02 · 4 obs

○ 2016-07-11 08:47:28
● 2017-04-02 16:42:56
○ 2026-02-23 18:43:44
○ 2026-03-24 09:35:54

○MXmailstore1.secureserver.net2017-04-02 → 2017-04-02 · 3 obs

● 2017-04-02 16:42:56
○ 2026-02-23 18:43:44
○ 2026-03-24 09:35:54

●MXmx.doubleknock.com.cust.b.hostedemail.com2026-02-23 → 2026-03-24 · 3 obs

○ 2017-04-02 16:42:56
● 2026-02-23 18:43:44
● 2026-03-24 09:35:54

○MXsmtp.secureserver.net2017-04-02 → 2017-04-02 · 3 obs

● 2017-04-02 16:42:56
○ 2026-02-23 18:43:44
○ 2026-03-24 09:35:54

○A184.168.221.562017-04-02 → 2017-04-02 · 3 obs

● 2017-04-02 16:42:56
○ 2026-02-23 18:43:44
○ 2026-03-24 09:35:54

●A23.227.38.702026-02-23 → 2026-03-24 · 3 obs

○ 2017-04-02 16:42:56
● 2026-02-23 18:43:44
● 2026-03-24 09:35:54

●A2620:127:f00f:a::2026-02-23 → 2026-03-24 · 3 obs

○ 2017-04-02 16:42:56
● 2026-02-23 18:43:44
● 2026-03-24 09:35:54

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	c.gtld-servers.net, h.gtld-servers.net, f.gtld-servers.net, l.gtld-servers.net...	-
doubleknock.com	ns-cloud-a1.googledomains.com, ns-cloud-a2.googledomains.com, ns-cloud-a3.googledomains.com, ns-cloud-a4.googledomains.com	8 records

✅ Authoritative Response

Server:216.239.32.106

NS records: ns-cloud-a1.googledomains.com, ns-cloud-a2.googledomains.com, ns-cloud-a3.googledomains.com, ns-cloud-a4.googledomains.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for doubleknock.com (unsigned zone)

⏱️ Timing

Total: 304ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`23.227.38.70`
AAAA	1	`2620:127:f00f:a::`
NS	4	`ns-cloud-a4.googledomains.com, ns-cloud-a1.googledomains.com...`
MX	1	`mx.doubleknock.com.cust.b.hostedemail.co`
TXT	1	`v=spf1 include:_spf.hostedemail.com ~all`
SOA	1	`ns-cloud-a1.googledomains.com cloud-dns-`

📌 Glue Records Collected

Total: 8

Out-of-bailiwick: 8 (ns-cloud-a1.googledomains.com, ns-cloud-a1.googledomains.com, ns-cloud-a2.googledomains.com...)

Analysis

IP Addresses

doubleknock.com points to two IP numbers: 2620:127:f00f:a:: and 23.227.38.70.

Other host names, for instance boutiquemyu.com, martinscreation.com, paulette.es, queenby.com and freediamondpainting.com share IP numbers with doubleknock.com.

Name Servers

doubleknock.com is delegated to four name servers: ns-cloud-a1.googledomains.com, ns-cloud-a2.googledomains.com, ns-cloud-a3.googledomains.com and ns-cloud-a4.googledomains.com.

doubleknock.com at least partially shares name servers with other domains, for instance mollythornberg.com, headabovetheclouds.com, pediatricsiq.com, axiozone.com and arcpond.com.

Host names with two IP numbers:

ns-cloud-a1.googledomains.com points to: 2001:4860:4802:32::6a and 216.239.32.106.

ns-cloud-a2.googledomains.com points to: 2001:4860:4802:34::6a and 216.239.34.106.

ns-cloud-a3.googledomains.com points to: 2001:4860:4802:36::6a and 216.239.36.106.

ns-cloud-a4.googledomains.com points to: 2001:4860:4802:38::6a and 216.239.38.106.

Mail Servers

doubleknock.com is handled by a single mail server, mx.doubleknock.com.cust.b.hostedemail.com.

mx.doubleknock.com.cust.b.hostedemail.com points to a single IP: 64.98.38.4.

doubleknock.com - robtex.com

doubleknock.com

com

Same first word

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

📌 Glue Records Collected

Analysis

IP Addresses

Name Servers

Mail Servers

`doubleknock.com`

`com`