`estudematematica.com.br`

DNSSEC	⚠️ Not signed
A	134.65.235.206^{🇧🇷 ORACLE-OCI-31898134.65.224.0/19 Oracle Corporation}
NS	`koa.ns.cloudflare.com` ⭐
		A	2606:4700:58::a29f:2cf2^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`koa.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c3f2^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`koa.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:23f2^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`koa.ns.cloudflare.com`
		A	108.162.195.242^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`koa.ns.cloudflare.com`
		A	162.159.44.242^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`koa.ns.cloudflare.com`
		A	172.64.35.242^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`koa.ns.cloudflare.com`
NS	`sima.ns.cloudflare.com`
		A	2606:4700:50::adf5:3ade^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sima.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c0de^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`sima.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:20de^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`sima.ns.cloudflare.com`
		A	108.162.192.222^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sima.ns.cloudflare.com`
		A	172.64.32.222^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sima.ns.cloudflare.com`
		A	173.245.58.222^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sima.ns.cloudflare.com`
MX	`aspmx.l.google.com` ⭐
		A	2607:f8b0:4023:c06::1b^{🇺🇸 Google2607:f8b0::/32}
			PTR	`dz-in-f27.1e100.net`
		A	142.250.101.27^{🇺🇸 Google142.250.101.0/24}
			PTR	`dz-in-f27.1e100.net`
MX	`alt1.aspmx.l.google.com`⁽⁵⁾
		A	2800:3f0:4003:c0f::1b^{🇨🇱 Google2800:3f0:4003::/48}
		A	108.177.123.27^{🇺🇸 Google108.177.123.0/24}
			PTR	`lcscld-in-f27.1e100.net`
MX	`alt2.aspmx.l.google.com`⁽⁵⁾
		A	2607:f8b0:4023:3003::1b^{🇺🇸 Google2607:f8b0::/32}
			PTR	`yulnkjt-in-f27.1e100.net`
		A	172.253.145.27^{🇺🇸 Google172.253.145.0/24}
			PTR	`yulnkjt-in-f27.1e100.net`
MX	`alt3.aspmx.l.google.com`⁽¹⁰⁾
		A	2a00:1450:4009:c0f::1a^{🇬🇧 Google2a00:1450:4009::/48}
			PTR	`yulhrs-in-f26.1e100.net`
		A	192.178.223.26^{🇺🇸 Google192.178.223.0/24}
			PTR	`yulhrs-in-f26.1e100.net`
MX	`alt4.aspmx.l.google.com`⁽¹⁰⁾
		A	2a00:1450:400c:c00::1a^{🇧🇪 Google2a00:1450:400c::/48}
			PTR	`ws-in-f26.1e100.net`
			PTR	`ws-in-x1a.1e100.net`
		A	173.194.76.27^{🇺🇸 Google173.194.76.0/24}
			PTR	`ws-in-f27.1e100.net`
TXT	`brevo-code:69fe318ee1063cf11ce9d8db704bf7a6`
TXT	`google-site-verification=Rcn0l8gjrT8i4NbmOtLlHNapoveaEV-zgQ6EgOWhLKM`
TXT	`mailerlite-domain-verification=86363f53f247a55b947e1db16c07d1dc5fbcd6be`
TXT	`v=spf1 a mx include:_spf.mlsend.com ~all`
SOA	`koa.ns.cloudflare.com`dns@cloudflare.com serial=2403239504

`com.br`

	DNSSEC	⚠️ Not signed
	NS	`a.dns.br` ⭐ ⚠️ Not in parent delegation
	NS	`b.dns.br` ⚠️ Not in parent delegation
	NS	`c.dns.br` ⚠️ Not in parent delegation
	NS	`d.dns.br` ⚠️ Not in parent delegation
	NS	`e.dns.br` ⚠️ Not in parent delegation
	NS	`f.dns.br` ⚠️ Not in parent delegation
	SOA	`a.dns.br`hostmaster@registro.br serial=2026129498

rank #541642 globally
rank #4101 in the tld
WOT: SAFE (69/100)

PTR for

29.140.186.205.in-addr.arpa

Same first word

estudematematica.com.br

DNS History

12 records (8 active, 4 former)

●NSkoa.ns.cloudflare.com2026-02-15 → 2026-05-09 · 3 obs

○ 2018-06-21 14:33:44
● 2026-02-15 19:22:40
● 2026-05-09 20:58:02

○NSns1.mediatemple.net2017-01-14 → 2018-06-21 · 4 obs

● 2017-01-14 17:16:58
● 2018-06-21 14:33:44
○ 2026-02-15 19:22:40
○ 2026-05-09 20:58:02

○NSns2.mediatemple.net2017-01-14 → 2018-06-21 · 4 obs

● 2017-01-14 17:16:58
● 2018-06-21 14:33:44
○ 2026-02-15 19:22:40
○ 2026-05-09 20:58:02

●NSsima.ns.cloudflare.com2026-02-15 → 2026-05-09 · 3 obs

○ 2018-06-21 14:33:44
● 2026-02-15 19:22:40
● 2026-05-09 20:58:02

●MXalt1.aspmx.l.google.com2026-02-15 → 2026-05-09 · 3 obs

○ 2018-06-21 14:33:44
● 2026-02-15 19:22:40
● 2026-05-09 20:58:02

●MXalt2.aspmx.l.google.com2026-02-15 → 2026-05-09 · 3 obs

○ 2018-06-21 14:33:44
● 2026-02-15 19:22:40
● 2026-05-09 20:58:02

●MXalt3.aspmx.l.google.com2026-02-15 → 2026-05-09 · 3 obs

○ 2018-06-21 14:33:44
● 2026-02-15 19:22:40
● 2026-05-09 20:58:02

●MXalt4.aspmx.l.google.com2026-02-15 → 2026-05-09 · 3 obs

○ 2018-06-21 14:33:44
● 2026-02-15 19:22:40
● 2026-05-09 20:58:02

●MXaspmx.l.google.com2026-02-15 → 2026-05-09 · 3 obs

○ 2018-06-21 14:33:44
● 2026-02-15 19:22:40
● 2026-05-09 20:58:02

○MXmail.estudematematica.com.br2017-01-14 → 2017-01-14 · 3 obs

● 2017-01-14 17:16:58
○ 2018-06-21 14:33:44
○ 2026-05-09 20:58:02

●A134.65.235.2062026-02-15 → 2026-05-09 · 3 obs

○ 2018-06-21 14:33:44
● 2026-02-15 19:22:40
● 2026-05-09 20:58:02

○A205.186.140.292017-01-14 → 2018-06-21 · 4 obs

● 2017-01-14 17:16:58
● 2018-06-21 14:33:44
○ 2026-02-15 19:22:40
○ 2026-05-09 20:58:02

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
br	a.dns.br, b.dns.br, c.dns.br, d.dns.br...	-
estudematematica.com.br	koa.ns.cloudflare.com, sima.ns.cloudflare.com	-

✅ Authoritative Response

Server:173.245.58.222

NS records: koa.ns.cloudflare.com, sima.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for estudematematica.com.br (unsigned zone)

⏱️ Timing

Total: 725ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`134.65.235.206`
NS	2	`koa.ns.cloudflare.com, sima.ns.cloudflare.com`
MX	5	`aspmx.l.google.com (pri: 1), alt3.aspmx.l.google.com (pri: 10)...`
TXT	4	`brevo-code:69fe318ee1063cf11ce9d8db704bf, google-site-verification=Rcn0l8gjrT8i4Nb...`
SOA	1	`koa.ns.cloudflare.com dns.cloudflare.com`