`mastertools.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3030::ac43:b113^{🇺🇸 Cloudflare} ✓ In HTTPS hints
A	2606:4700:3032::6815:119e^{🇺🇸 Cloudflare} ✓ In HTTPS hints
A	104.21.17.158^Cloudflare ✓ In HTTPS hints
A	172.67.177.19^{🇺🇸 Cloudflare} ✓ In HTTPS hints
NS	`kareem.ns.cloudflare.com` ⭐
		A	2606:4700:58::a29f:2c16^{🇺🇸 Cloudflare}
			PTR	`kareem.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c316^{🇨🇷 Cloudflare}
			PTR	`kareem.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2316^{🇺🇸 Cloudflare}
			PTR	`kareem.ns.cloudflare.com`
		A	108.162.195.22^{🇺🇸 Cloudflare}
			PTR	`kareem.ns.cloudflare.com`
		A	162.159.44.22^Cloudflare
			PTR	`kareem.ns.cloudflare.com`
		A	172.64.35.22^{🇺🇸 Cloudflare}
			PTR	`kareem.ns.cloudflare.com`
NS	`tessa.ns.cloudflare.com` 🔒
		A	2606:4700:50::a29f:26e5^{🇺🇸 Cloudflare}
			PTR	`tessa.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c2e5^{🇨🇷 Cloudflare}
			PTR	`tessa.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:22e5^{🇺🇸 Cloudflare}
			PTR	`tessa.ns.cloudflare.com`
		A	108.162.194.229^{🇺🇸 Cloudflare}
			PTR	`tessa.ns.cloudflare.com`
		A	162.159.38.229^Cloudflare
			PTR	`tessa.ns.cloudflare.com`
		A	172.64.34.229^{🇺🇸 Cloudflare}
			PTR	`tessa.ns.cloudflare.com`
MX	`aspmx.l.google.com` ⭐
		A	2607:f8b0:4004:c19::1b^{🇺🇸 Google}
			PTR	`bk-in-f27.1e100.net`
		A	172.253.62.27^{🇺🇸 Google}
			PTR	`bc-in-f27.1e100.net`
MX	`alt1.aspmx.l.google.com`⁽⁵⁾
		A	2607:f8b0:4003:c30::1b^{🇺🇸 Google}
			PTR	`yutulis-in-f27.1e100.net`
		A	74.125.27.26^{🇺🇸 Google}
			PTR	`yutulis-in-f26.1e100.net`
MX	`alt2.aspmx.l.google.com`⁽⁵⁾
		A	2607:f8b0:4001:c70::1a^{🇺🇸 Google}
			PTR	`yucbful-in-f26.1e100.net`
		A	192.178.209.26^{🇺🇸 Google}
			PTR	`yucbful-in-f26.1e100.net`
MX	`alt3.aspmx.l.google.com`⁽¹⁰⁾
		A	2607:f8b0:4024:c0d::1b^{🇺🇸 Google}
			PTR	`mj-in-f27.1e100.net`
		A	192.178.152.26^{🇺🇸 Google}
			PTR	`mj-in-f26.1e100.net`
MX	`alt4.aspmx.l.google.com`⁽¹⁰⁾
		A	2607:f8b0:4023:403::1a^{🇺🇸 Google}
			PTR	`gg-in-f26.1e100.net`
		A	142.250.96.27^{🇺🇸 Google}
			PTR	`gg-in-f27.1e100.net`
TXT	`G+Et2Rjbb3JcD5TR95sJHdsZbJZEpyt7w5QUuWiCNHY=`
TXT	`facebook-domain-verification=jcekp20r9etb29417agpl24k1x0iwg`
TXT	`google-site-verification=-XJ9fPZ0lkZ21E4P9Ha7Vt4qqng_Gc_-43wq8S4yTVg`
TXT	`google-site-verification=2GvhxI7fFs1g5LuiiZSgU95KFG1ov8wBnY17mZARs8U`
TXT	`google-site-verification=TTBXynita9-qs43pfujNpgQVkaiqQESmTtX8TsRx3ZM`
TXT	`google-site-verification=U9k0eFLB_FQW3Cs_cnh14Rb4pBEOg53GPs7rENZGSgI`
TXT	`v=spf1 include:_spf.google.com include:amazonses.com include:emsd1.com ~all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4	104.21.17.158, 172.67.177.19
		IPv6	2606:4700:3030::ac43:b113, 2606:4700:3032::6815:119e
SOA	`kareem.ns.cloudflare.com`dns@cloudflare.com serial=2397138649

`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

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DNS History

17 records (11 active, 6 former)

●NSkareem.ns.cloudflare.com2026-02-20 → 2026-02-24 · 3 obs

○ 2017-01-28 17:51:52
● 2026-02-20 18:59:28
● 2026-02-24 10:41:16

○NSns1.telenetcom.com2007-11-10 → 2016-02-27 · 4 obs

● 2007-11-10 20:36:10
● 2016-02-27 08:12:18
○ 2017-01-28 17:51:52
○ 2026-02-24 10:41:16

○NSns2.telenetcom.com2007-11-10 → 2016-02-27 · 4 obs

● 2007-11-10 20:36:10
● 2016-02-27 08:12:18
○ 2017-01-28 17:51:52
○ 2026-02-24 10:41:16

●NStessa.ns.cloudflare.com2026-02-20 → 2026-02-24 · 3 obs

○ 2017-01-28 17:51:52
● 2026-02-20 18:59:28
● 2026-02-24 10:41:16

●MXalt1.aspmx.l.google.com2026-02-20 → 2026-02-24 · 2 obs

● 2026-02-20 18:59:28
● 2026-02-24 10:41:16

●MXalt2.aspmx.l.google.com2026-02-20 → 2026-02-24 · 2 obs

● 2026-02-20 18:59:28
● 2026-02-24 10:41:16

●MXalt3.aspmx.l.google.com2026-02-20 → 2026-02-24 · 2 obs

● 2026-02-20 18:59:28
● 2026-02-24 10:41:16

●MXalt4.aspmx.l.google.com2026-02-20 → 2026-02-24 · 2 obs

● 2026-02-20 18:59:28
● 2026-02-24 10:41:16

●MXaspmx.l.google.com2026-02-20 → 2026-02-24 · 2 obs

● 2026-02-20 18:59:28
● 2026-02-24 10:41:16

●A104.21.17.1582026-02-20 → 2026-02-24 · 3 obs

○ 2018-10-28 17:02:38
● 2026-02-20 18:59:28
● 2026-02-24 10:41:16

○A141.8.230.202017-01-28 → 2017-01-28 · 4 obs

○ 2016-02-27 08:12:18
● 2017-01-28 17:51:52
○ 2018-10-28 17:02:38
○ 2026-02-24 10:41:16

●A172.67.177.192026-02-20 → 2026-02-24 · 3 obs

○ 2018-10-28 17:02:38
● 2026-02-20 18:59:28
● 2026-02-24 10:41:16

●A2606:4700:3030::ac43:b1132026-02-20 → 2026-02-24 · 3 obs

○ 2018-10-28 17:02:38
● 2026-02-20 18:59:28
● 2026-02-24 10:41:16

●A2606:4700:3032::6815:119e2026-02-20 → 2026-02-24 · 3 obs

○ 2018-10-28 17:02:38
● 2026-02-20 18:59:28
● 2026-02-24 10:41:16

○A64.20.35.1552007-11-10 → 2007-11-10 · 3 obs

● 2007-11-10 20:36:10
○ 2015-07-15 13:14:02
○ 2026-02-24 10:41:16

○A66.45.246.1402015-07-15 → 2016-02-27 · 5 obs

○ 2007-11-10 20:36:10
● 2015-07-15 13:14:02
● 2016-02-27 08:12:18
○ 2017-01-28 17:51:52
○ 2026-02-24 10:41:16

○CNAMEpres.serverhome.com2017-01-28 → 2018-10-28 · 4 obs

● 2017-01-28 17:51:52
● 2018-10-28 17:02:38
○ 2026-02-20 18:59:28
○ 2026-02-24 10:41:16

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
mastertools.com	tessa.ns.cloudflare.com, kareem.ns.cloudflare.com	-

✅ Authoritative Response

Server: 108.162.195.22

NS records: tessa.ns.cloudflare.com, kareem.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for mastertools.com (unsigned zone)

⏱️ Timing

Total: 133ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.17.158, 172.67.177.19`
AAAA	2	`2606:4700:3030::ac43:b113, 2606:4700:3032::6815:119e`
NS	2	`kareem.ns.cloudflare.com, tessa.ns.cloudflare.com`
MX	5	`aspmx.l.google.com (pri: 1), alt3.aspmx.l.google.com (pri: 10)...`
TXT	7	`G+Et2Rjbb3JcD5TR95sJHdsZbJZEpyt7w5QUuWiC, facebook-domain-verification=jcekp20r9et...`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`kareem.ns.cloudflare.com dns.cloudflare.`

AI analysis

mastertools.com points to four IP numbers: 2606:4700:3030::ac43:b113, 2606:4700:3032::6815:119e, 104.21.17.158 and 172.67.177.19.

Other host names, for instance jshzy.com, hypewize.com, chinakenhan.com, posmotri-film.ru and advantacentralpartners.digital share IP numbers with mastertools.com.

Delegation for mastertools.com rests with two name servers, kareem.ns.cloudflare.com and tessa.ns.cloudflare.com.

mastertools.com shares the same name server setup as other domains, including mfcommunication.net, appturo.com, mikemunzvil.com, optisign.com and cloudmos.io.

mastertools.com at least partially shares name servers with other domains, for instance 1796web.com, dmyz.net, simsekhalicilik.com, filipinolawyer.ca and minbrain.com.