`grsecurity.com`

DNSSEC	⚠️ Not signed
A	50.239.52.65^{🇺🇸 COMCAST-IBONE50.128.0.0/9 Comcast Cable Communications, Inc. 1800 Bishops Gate Blvd Mount Laurel, NJ 08054}
		PTR	`grsecurity.net`
NS	`pdns1.registrar-servers.com` ⭐
		A	2610:a1:1024::100^{🇺🇸 MAINT-ID-120082610:a1:1024::/48 Neustar}
		A	156.154.132.100^{🇺🇸 MAINT-ID-12008156.154.132.0/24 Neustar}
NS	`pdns2.registrar-servers.com`
		A	2610:a1:1025::100^{🇺🇸 MAINT-ID-120082610:a1:1025::/48 Neustar}
		A	156.154.133.100^{🇺🇸 MAINT-ID-12008156.154.133.0/24 Neustar}
MX	`aspmx.l.google.com` ⭐
		A	2607:f8b0:4023:c06::1a^{🇺🇸 Google2607:f8b0::/32}
			PTR	`dz-in-f26.1e100.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	2607:f8b0:4023:2801::1b^{🇺🇸 Google2607:f8b0::/32}
			PTR	`lcausi-in-f27.1e100.net`
		A	192.178.128.26^{🇺🇸 Google192.178.128.0/24}
			PTR	`lcausi-in-f26.1e100.net`
MX	`alt2.aspmx.l.google.com`⁽⁵⁾
		A	2607:f8b0:4023:1015::1b^{🇺🇸 Google2607:f8b0::/32}
			PTR	`yudfwta-in-f27.1e100.net`
		A	172.253.135.27^{🇺🇸 Google172.253.135.0/24}
			PTR	`yudfwta-in-f27.1e100.net`
MX	`aspmx2.googlemail.com`⁽¹⁰⁾
		A	2a00:1450:4025:402::1b^{🇳🇱 Google2a00:1450:4025::/48}
			PTR	`rb-in-f27.1e100.net`
		A	142.250.102.27^{🇺🇸 Google142.250.102.0/24}
			PTR	`rb-in-f27.1e100.net`
MX	`aspmx3.googlemail.com`⁽¹⁰⁾
		A	2607:f8b0:4023:1015::1b^{🇺🇸 Google2607:f8b0::/32}
			PTR	`yudfwta-in-f27.1e100.net`
		A	172.253.135.27^{🇺🇸 Google172.253.135.0/24}
			PTR	`yudfwta-in-f27.1e100.net`
TXT	`v=spf1 include:_spf.google.com a:grsecurity.com ~all`
SOA	`pdns1.registrar-servers.com`hostmaster@registrar-servers.com serial=1616679791

`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=1774429287

Subdomains

mail.grsecurity.com

Same first word

grsecurity.com.my

grsecurity.org

grsecurity.net

grsecurity.com

Similar names

rgsecurity.com

rgsecurity.de

DNS History

15 records (8 active, 7 former)

○NSdns1.registrar-servers.com2015-06-14 → 2016-04-21 · 4 obs

● 2015-06-14 12:40:26
● 2016-04-21 02:32:46
○ 2017-01-17 11:07:56
○ 2026-03-25 09:31:48

○NSdns2.registrar-servers.com2015-06-14 → 2016-04-21 · 4 obs

● 2015-06-14 12:40:26
● 2016-04-21 02:32:46
○ 2017-01-17 11:07:56
○ 2026-03-25 09:31:48

○NSdns3.registrar-servers.com2015-06-14 → 2016-04-21 · 4 obs

● 2015-06-14 12:40:26
● 2016-04-21 02:32:46
○ 2017-01-17 11:07:56
○ 2026-03-25 09:31:48

○NSdns4.registrar-servers.com2015-06-14 → 2016-04-21 · 4 obs

● 2015-06-14 12:40:26
● 2016-04-21 02:32:46
○ 2017-01-17 11:07:56
○ 2026-03-25 09:31:48

○NSdns5.registrar-servers.com2015-06-14 → 2016-04-21 · 4 obs

● 2015-06-14 12:40:26
● 2016-04-21 02:32:46
○ 2017-01-17 11:07:56
○ 2026-03-25 09:31:48

●NSpdns1.registrar-servers.com2017-01-17 → 2026-03-25 · 3 obs

○ 2016-04-21 02:32:46
● 2017-01-17 11:07:56
● 2026-03-25 09:31:48

●NSpdns2.registrar-servers.com2017-01-17 → 2026-03-25 · 3 obs

○ 2016-04-21 02:32:46
● 2017-01-17 11:07:56
● 2026-03-25 09:31:48

●MXalt1.aspmx.l.google.com2026-02-15 → 2026-03-25 · 3 obs

○ 2017-01-17 11:07:56
● 2026-02-15 04:52:08
● 2026-03-25 09:31:48

●MXalt2.aspmx.l.google.com2026-02-15 → 2026-03-25 · 3 obs

○ 2017-01-17 11:07:56
● 2026-02-15 04:52:08
● 2026-03-25 09:31:48

●MXaspmx.l.google.com2026-02-15 → 2026-03-25 · 3 obs

○ 2017-01-17 11:07:56
● 2026-02-15 04:52:08
● 2026-03-25 09:31:48

●MXaspmx2.googlemail.com2026-02-15 → 2026-03-25 · 3 obs

○ 2017-01-17 11:07:56
● 2026-02-15 04:52:08
● 2026-03-25 09:31:48

●MXaspmx3.googlemail.com2026-02-15 → 2026-03-25 · 3 obs

○ 2017-01-17 11:07:56
● 2026-02-15 04:52:08
● 2026-03-25 09:31:48

○MXmail.grsecurity.com2015-06-14 → 2017-01-17 · 4 obs

● 2015-06-14 12:40:26
● 2017-01-17 11:07:56
○ 2026-02-15 04:52:08
○ 2026-03-25 09:31:48

●A50.239.52.652026-02-15 → 2026-03-25 · 3 obs

○ 2017-01-17 11:07:56
● 2026-02-15 04:52:08
● 2026-03-25 09:31:48

○A50.251.85.492015-06-14 → 2017-01-17 · 4 obs

● 2015-06-14 12:40:26
● 2017-01-17 11:07:56
○ 2026-02-15 04:52:08
○ 2026-03-25 09:31:48

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
grsecurity.com	pdns1.registrar-servers.com, pdns2.registrar-servers.com	4 records

✅ Authoritative Response

Server:156.154.132.100

NS records: pdns1.registrar-servers.com, pdns2.registrar-servers.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for grsecurity.com (unsigned zone)

⏱️ Timing

Total: 194ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`50.239.52.65`
NS	2	`pdns1.registrar-servers.com, pdns2.registrar-servers.com`
MX	5	`aspmx.l.google.com (pri: 1), alt1.aspmx.l.google.com (pri: 5)...`
TXT	1	`v=spf1 include:_spf.google.com a:grsecur`
SOA	1	`pdns1.registrar-servers.com hostmaster.r`

📌 Glue Records Collected

Total: 4

Out-of-bailiwick: 4 (pdns1.registrar-servers.com, pdns1.registrar-servers.com, pdns2.registrar-servers.com...)

Analysis

Hierarchy

The parent of mail.grsecurity.com is grsecurity.com.

IP Addresses

grsecurity.com points to a single IP number: 50.239.52.65.

Other host names, for instance mail.grsecurity.com, opensrcsec.com, grsecurity.org, pageexec.net and mail.pageexec.com share IP numbers with grsecurity.com.