proofreason.com - dns.ninja

`proofreason.com`

DNSSEC	⚠️ Not signed
A	76.76.21.21^{🇺🇸 Amazon76.76.21.0/24 EC2 Prefix}
NS	`ns2.web4u.cz` ⭐
		A	2a02:a40:100:28ff::12^{🇨🇿 BlueTone-AS2a02:a40::/32 Ceske Radiokomunikace, a.s.}
			PTR	`ns2.web4u.cz`
		A	85.207.53.12^{🇨🇿 BlueTone-AS85.207.0.0/16 BlueTone-CRa-CZ Fourth address block}
			PTR	`ns2.web4u.cz`
NS	`ns.web4u.cz`
		A	2001:1568:fd::241^{🇨🇿 WEB4U2001:1568::/33}
			PTR	`ns.web4u.cz`
		A	185.14.224.241^{🇨🇿 WEB4U185.14.224.0/23}
			PTR	`ns.web4u.cz`
MX	`aspmx.l.google.com` ⭐
		A	2607:f8b0:4004:c0b::1b^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`bj-in-f27.1e100.net`
		A	142.251.163.26^{🇺🇸 Google142.251.163.0/24}
			PTR	`wv-in-f26.1e100.net`
MX	`alt1.aspmx.l.google.com`⁽⁵⁾
		A	2800:3f0:4003:c14::1b^{🇨🇱 Google2800:3f0:4003::/48}
		A	192.178.234.26^{🇺🇸 Google192.178.0.0/15}
			PTR	`ncsclj-in-f26.1e100.net`
MX	`alt2.aspmx.l.google.com`⁽⁵⁾
		A	2a00:1450:400b:c02::1b^{🇮🇪 Google2a00:1450:400b::/48}
			PTR	`dj-in-f27.1e100.net`
		A	172.253.116.26^{🇺🇸 Google172.253.116.0/24}
			PTR	`dj-in-f26.1e100.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:c23::1a^{🇧🇪 Google2a00:1450:400c::/48}
			PTR	`yubrupd-in-f26.1e100.net`
		A	172.253.157.27^{🇺🇸 Google172.253.0.0/16}
			PTR	`yubrupd-in-f27.1e100.net`
TXT	`MS=B63F45EC7340AC7135CE952C7C6BB7809FFF6333`
TXT	`brevo-code:1e898f471eab88ebc8259a0a2e774278`
TXT	`google-site-verification=dZNQv37Cn0kVB9MecOTYAGue4b9w9F3wkMHDoxCoyDc`
TXT	`v=spf1 a mx include:_spf.google.com include:spf.smartemailing.cz ip4:217.16.1...`
SOA	`ns.web4u.cz`admin@web4u.cz 2026-07-01 #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=1786664469

Same first word

proofreason.com

proofreason.eu

Similar names

pearsonroof.com

DNS History

11 records (8 active, 3 former)

●NSns.web4u.cz2015-05-26 → 2026-08-13 · 2 obs

● 2015-05-26 17:43:34
● 2026-08-13 23:55:50

●NSns2.web4u.cz2015-05-26 → 2026-08-13 · 2 obs

● 2015-05-26 17:43:34
● 2026-08-13 23:55:50

●MXalt1.aspmx.l.google.com2026-02-20 → 2026-08-13 · 3 obs

○ 2018-10-29 19:54:04
● 2026-02-20 01:18:10
● 2026-08-13 23:55:50

●MXalt2.aspmx.l.google.com2026-02-20 → 2026-08-13 · 3 obs

○ 2018-10-29 19:54:04
● 2026-02-20 01:18:10
● 2026-08-13 23:55:50

●MXalt3.aspmx.l.google.com2026-02-20 → 2026-08-13 · 3 obs

○ 2018-10-29 19:54:04
● 2026-02-20 01:18:10
● 2026-08-13 23:55:50

●MXalt4.aspmx.l.google.com2026-02-20 → 2026-08-13 · 3 obs

○ 2018-10-29 19:54:04
● 2026-02-20 01:18:10
● 2026-08-13 23:55:50

●MXaspmx.l.google.com2026-02-20 → 2026-08-13 · 3 obs

○ 2018-10-29 19:54:04
● 2026-02-20 01:18:10
● 2026-08-13 23:55:50

○MXmail.proofreason.com2015-05-26 → 2018-10-29 · 4 obs

● 2015-05-26 17:43:34
● 2018-10-29 19:54:04
○ 2026-02-20 01:18:10
○ 2026-08-13 23:55:50

○A193.85.154.1582018-10-29 → 2018-10-29 · 4 obs

○ 2017-07-06 00:21:48
● 2018-10-29 19:54:04
○ 2026-02-20 01:18:10
○ 2026-08-13 23:55:50

●A76.76.21.212026-02-20 → 2026-08-13 · 3 obs

○ 2018-10-29 19:54:04
● 2026-02-20 01:18:10
● 2026-08-13 23:55:50

○A81.91.86.122015-05-26 → 2017-07-06 · 4 obs

● 2015-05-26 17:43:34
● 2017-07-06 00:21:48
○ 2018-10-29 19:54:04
○ 2026-08-13 23:55:50

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
proofreason.com	ns.web4u.cz, ns2.web4u.cz	-

✅ Authoritative Response

Server:85.207.53.12

NS records: ns.web4u.cz, ns2.web4u.cz

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for proofreason.com (unsigned zone)

⏱️ Timing

Total: 1091ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`76.76.21.21`
NS	2	`ns.web4u.cz, ns2.web4u.cz`
MX	5	`aspmx.l.google.com (pri: 1), alt1.aspmx.l.google.com (pri: 5)...`
TXT	4	`MS=B63F45EC7340AC7135CE952C7C6BB7809FFF6, brevo-code:1e898f471eab88ebc8259a0a2e774...`
SOA	1	`ns.web4u.cz admin.web4u.cz`

Analysis

IP Addresses

proofreason.com points to a single IP number: 76.76.21.21.

Additional host names — jordan-matthews.com, canvasdeveloper.com, avixai.ai and two others — share IP numbers with proofreason.com.

Name Servers

proofreason.com uses two name servers for its delegation: ns2.web4u.cz and ns.web4u.cz.

proofreason.com shares its name server setup with other domains, including servant.cz, zs-zbysov.cz, krumlov-reisen.cz and two others.

The two host names ns2.web4u.cz and ns.web4u.cz each have a pair of IP addresses: ns2.web4u.cz has 85.207.53.12 and 2a02:a40:100:28ff::12, and ns.web4u.cz has 185.14.224.241 and 2001:1568:fd::241.

Mail Servers

proofreason.com has five mail servers, which are aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com and two others.

proofreason.com shares mail servers — at least in part — with other domains, including edisonlake.com, gag.pizza, thesilvergroup.co.in and two others.

These mail servers are frequently used alongside mail servers alt3.aspmx.l.google.com, alt4.aspmx.l.google.com, aspmx3.googlemail.com and 3 other.

Host names with two IP numbers:

aspmx.l.google.com directs traffic to 142.251.163.26 and 2607:f8b0:4004:c0b::1b.

alt1.aspmx.l.google.com directs traffic to 192.178.234.26 and 2800:3f0:4003:c14::1b.

alt2.aspmx.l.google.com directs traffic to 172.253.116.26 and 2a00:1450:400b:c02::1b.

alt3.aspmx.l.google.com directs traffic to 192.178.223.26 and 2a00:1450:4009:c0f::1a.

alt4.aspmx.l.google.com directs traffic to 172.253.157.27 and 2a00:1450:400c:c23::1a.