tech-knowhow.com - dns.ninja

`tech-knowhow.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3035::ac43:a890^{🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3037::6815:1ad7^{🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.26.215^{Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.168.144^{🇺🇸 Cloudflare172.67.160.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`cortney.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3a57^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`cortney.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c057^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`cortney.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2057^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`cortney.ns.cloudflare.com`
		A	108.162.192.87^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`cortney.ns.cloudflare.com`
		A	172.64.32.87^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`cortney.ns.cloudflare.com`
		A	173.245.58.87^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`cortney.ns.cloudflare.com`
NS	`dave.ns.cloudflare.com`
		A	2606:4700:58::adf5:3b6d^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`dave.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c16d^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`dave.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:216d^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`dave.ns.cloudflare.com`
		A	108.162.193.109^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
		A	172.64.33.109^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
		A	173.245.59.109^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
MX	`mail.tech-knowhow.com` ⭐
		A	2a02:c207:2310:4191::1^{🇩🇪 CONTABO2a02:c207::/32}
			PTR	`vmi3104191.contaboserver.net`
		A	217.76.49.84^{🇩🇪 CONTABO217.76.48.0/20}
			PTR	`vmi3104191.contaboserver.net`
TXT	`google-site-verification=KOdWLOELXTovz6Q8eGdg2m201AjnWIAV2LAPOvx50TQ`
TXT	`v=spf1 include:amazonses.com ~all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.26.215, 172.67.168.144
		IPv6 hints	2606:4700:3035::ac43:a890, 2606:4700:3037::6815:1ad7
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=87, name=cloudflare-ech.com
SOA	`cortney.ns.cloudflare.com`dns@cloudflare.com serial=2407852255

`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=1782777431

Subdomains

www.tech-knowhow.com

mail.tech-knowhow.com

Same first word

tech-knowhow.com

DNS History

22 records (7 active, 15 former)

●NScortney.ns.cloudflare.com2016-03-22 → 2026-06-30 · 3 obs

○ 2015-12-06 14:24:14
● 2016-03-22 09:00:40
● 2026-06-30 00:03:52

●NSdave.ns.cloudflare.com2016-03-22 → 2026-06-30 · 3 obs

○ 2015-12-06 14:24:14
● 2016-03-22 09:00:40
● 2026-06-30 00:03:52

○NSns1.m57.siteground.biz2015-07-23 → 2015-12-06 · 4 obs

● 2015-07-23 19:00:26
● 2015-12-06 14:24:14
○ 2016-03-22 09:00:40
○ 2026-06-30 00:03:52

○NSns2.m57.siteground.biz2015-07-23 → 2015-12-06 · 4 obs

● 2015-07-23 19:00:26
● 2015-12-06 14:24:14
○ 2016-03-22 09:00:40
○ 2026-06-30 00:03:52

○MXalt1.aspmx.l.google.com2015-07-23 → 2015-12-06 · 4 obs

● 2015-07-23 19:00:26
● 2015-12-06 14:24:14
○ 2016-03-22 09:00:40
○ 2026-06-30 00:03:52

○MXalt2.aspmx.l.google.com2015-07-23 → 2016-09-08 · 4 obs

● 2015-07-23 19:00:26
● 2016-09-08 16:21:28
○ 2018-07-15 09:57:10
○ 2026-06-30 00:03:52

○MXaspmx.l.google.com2015-07-23 → 2016-09-08 · 4 obs

● 2015-07-23 19:00:26
● 2016-09-08 16:21:28
○ 2018-07-15 09:57:10
○ 2026-06-30 00:03:52

○MXaspmx2.googlemail.com2015-07-23 → 2016-09-08 · 4 obs

● 2015-07-23 19:00:26
● 2016-09-08 16:21:28
○ 2018-07-15 09:57:10
○ 2026-06-30 00:03:52

○MXaspmx3.googlemail.com2015-07-23 → 2016-09-08 · 4 obs

● 2015-07-23 19:00:26
● 2016-09-08 16:21:28
○ 2018-07-15 09:57:10
○ 2026-06-30 00:03:52

●MXmail.tech-knowhow.com2026-03-14 → 2026-06-30 · 3 obs

○ 2018-07-15 09:57:10
● 2026-03-14 11:16:50
● 2026-06-30 00:03:52

○MXscanner02.mail.supportedns.com2016-03-22 → 2016-09-08 · 5 obs

○ 2015-12-06 14:24:14
● 2016-03-22 09:00:40
● 2016-09-08 16:21:28
○ 2018-07-15 09:57:10
○ 2026-06-30 00:03:52

○MXsmtp1.mailfence.com2018-07-15 → 2018-07-15 · 4 obs

○ 2016-09-08 16:21:28
● 2018-07-15 09:57:10
○ 2026-03-14 11:16:50
○ 2026-06-30 00:03:52

○MXsmtp2.mailfence.com2018-07-15 → 2018-07-15 · 4 obs

○ 2016-09-08 16:21:28
● 2018-07-15 09:57:10
○ 2026-03-14 11:16:50
○ 2026-06-30 00:03:52

●A104.21.26.2152026-05-05 → 2026-06-30 · 3 obs

○ 2026-03-25 20:22:48
● 2026-05-05 20:57:24
● 2026-06-30 00:03:52

○A162.244.253.1512016-03-22 → 2018-07-15 · 5 obs

○ 2015-12-06 14:24:14
● 2016-03-22 09:00:40
● 2018-07-15 09:57:10
○ 2026-03-14 11:16:50
○ 2026-06-30 00:03:52

●A172.67.168.1442026-05-05 → 2026-06-30 · 3 obs

○ 2026-03-25 20:22:48
● 2026-05-05 20:57:24
● 2026-06-30 00:03:52

○A195.35.15.412026-03-14 → 2026-03-25 · 5 obs

○ 2018-07-15 09:57:10
● 2026-03-14 11:16:50
● 2026-03-25 20:22:48
○ 2026-05-05 20:57:24
○ 2026-06-30 00:03:52

○A2606:4700:3033::ac43:a8902026-05-05 → 2026-06-13 · 5 obs

○ 2026-03-25 20:22:48
● 2026-05-05 20:57:24
● 2026-06-13 23:14:14
○ 2026-06-30 00:03:50
○ 2026-06-30 00:03:52

○A2606:4700:3035::6815:1ad72026-05-05 → 2026-06-13 · 5 obs

○ 2026-03-25 20:22:48
● 2026-05-05 20:57:24
● 2026-06-13 23:14:14
○ 2026-06-30 00:03:50
○ 2026-06-30 00:03:52

●A2606:4700:3035::ac43:a8902026-06-30 → 2026-06-30 · 3 obs

○ 2026-06-13 23:14:14
● 2026-06-30 00:03:50
● 2026-06-30 00:03:52

●A2606:4700:3037::6815:1ad72026-06-30 → 2026-06-30 · 3 obs

○ 2026-06-13 23:14:14
● 2026-06-30 00:03:50
● 2026-06-30 00:03:52

○A69.175.81.2352015-07-23 → 2015-12-06 · 4 obs

● 2015-07-23 19:00:26
● 2015-12-06 14:24:14
○ 2016-03-22 09:00:40
○ 2026-06-30 00:03:52

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	c.gtld-servers.net, a.gtld-servers.net, k.gtld-servers.net, i.gtld-servers.net...	-
tech-knowhow.com	dave.ns.cloudflare.com, cortney.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.192.87

NS records: dave.ns.cloudflare.com, cortney.ns.cloudflare.com

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 152ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.168.144, 104.21.26.215`
AAAA	2	`2606:4700:3035::ac43:a890, 2606:4700:3037::6815:1ad7`
NS	2	`cortney.ns.cloudflare.com, dave.ns.cloudflare.com`
MX	1	`mail.tech-knowhow.com (pri: 10)`
TXT	2	`google-site-verification=KOdWLOELXTovz6Q, v=spf1 include:amazonses.com ~all`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`cortney.ns.cloudflare.com dns.cloudflare`

📌 Glue Records Collected

Total: 12

Out-of-bailiwick: 12 (dave.ns.cloudflare.com, dave.ns.cloudflare.com, dave.ns.cloudflare.com...)

Analysis

Hierarchy

www.tech-knowhow.com and mail.tech-knowhow.com are both subdomains of tech-knowhow.com.

IP Addresses

tech-knowhow.com has four IP addresses: 104.21.26.215, 172.67.168.144, 2606:4700:3035::ac43:a890 and 2606:4700:3037::6815:1ad7.

buahhoki-sp.com, aesthetic-fonts.com, turpial.org and two other host names share IP numbers with tech-knowhow.com.

Name Servers

DNS delegation for tech-knowhow.com points to two name servers: cortney.ns.cloudflare.com and dave.ns.cloudflare.com.

tech-knowhow.com uses the same name servers as several other domains — among them 13century.com, valleygreenbank.com, autoaccidentattorneysanantonio.org and two more.

tech-knowhow.com shares at least some of its name servers with other domains, including dy3w.shop, andy-bell.co.uk, 176zzz.net and two others.

These name servers are frequently paired with the name servers mimi.ns.cloudflare.com, dana.ns.cloudflare.com and gina.ns.cloudflare.com.

Hostnames that resolve to 6 IP addresses:

cortney.ns.cloudflare.com has IP addresses 108.162.192.87, 172.64.32.87 and 173.245.58.87, plus 3 other.

dave.ns.cloudflare.com has IP addresses 108.162.193.109, 172.64.33.109 and 173.245.59.109, plus 3 other.

Mail Servers

Mail for tech-knowhow.com is handled by a single mail server, mail.tech-knowhow.com.

mail.tech-knowhow.com points to two IP addresses: 217.76.49.84 and 2a02:c207:2310:4191::1.