🛡️Domain Reputation CheckBlocklist, phishing & malware status→

`linuxsystemprogramming.com`

DNSSEC	⚠️ Not signed
A	45.84.74.9^{🇩🇪 MNET-AS45.84.74.0/23 DE-JAMBIT-CoLo via M-net}
		PTR	`jira-p00179602.jambit.com`
NS	`curitiba.ns.porkbun.com` ⭐
		A	2400:cb00:2049:1::adf5:3a25^{🇺🇸 Cloudflare2400:cb00:2049::/48 , Inc. 101 Townsend Street}
		A	173.245.58.37^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
NS	`fortaleza.ns.porkbun.com`
		A	2400:cb00:2049:1::a29f:88c^{🇺🇸 Cloudflare2400:cb00:2049::/48 , Inc. 101 Townsend Street}
		A	162.159.8.140^{Cloudflare162.159.8.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
NS	`maceio.ns.porkbun.com`
		A	2400:cb00:2049:1::a29f:bb4^{🇺🇸 Cloudflare2400:cb00:2049::/48 , Inc. 101 Townsend Street}
		A	162.159.11.180^{Cloudflare162.159.11.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
NS	`salvador.ns.porkbun.com`
		A	2400:cb00:2049:1::a29f:a96^{🇺🇸 Cloudflare2400:cb00:2049::/48 , Inc. 101 Townsend Street}
		A	162.159.10.150^{Cloudflare162.159.10.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
MX	`aspmx.l.google.com` ⭐
		A	2607:f8b0:4004:c1d::1a^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`ww-in-f26.1e100.net`
		A	173.194.45.26^{🇺🇸 Google173.194.0.0/16}
			PTR	`yuiadum-in-f26.1e100.net`
MX	`alt1.aspmx.l.google.com`⁽⁵⁾
		A	2800:3f0:4003:c14::1a^{🇨🇱 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::1b^{🇬🇧 Google2a00:1450:4009::/48}
			PTR	`yulhrs-in-f27.1e100.net`
		A	192.178.223.27^{🇺🇸 Google192.178.223.0/24}
			PTR	`yulhrs-in-f27.1e100.net`
MX	`alt4.aspmx.l.google.com`⁽¹⁰⁾
		A	2a00:1450:400c:c23::1b^{🇧🇪 Google2a00:1450:400c::/48}
			PTR	`yubrupd-in-f27.1e100.net`
		A	172.253.157.26^{🇺🇸 Google172.253.0.0/16}
			PTR	`yubrupd-in-f26.1e100.net`
SOA	`curitiba.ns.porkbun.com`dns@cloudflare.com serial=2399226238

`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=1788341210

Same first word

linuxsystemprogramming.com

Previous names

Next names

linuxsystems.com

linuxsystemsprogramming.com

linuxt.com

linuxtab.com

linuxtablet.com

linuxtablets.com

linuxtac.com

linuxtag-voucher.com

linuxtag.com

linuxtage.com

linuxtail.com

linuxtalent.com

linuxtalk.com

DNS History

17 records (10 active, 7 former)

●NScuritiba.ns.porkbun.com2026-08-30 → 2026-09-02 · 3 obs

○ 2017-04-02 22:39:14
● 2026-08-30 04:49:56
● 2026-09-02 09:51:20

●NSfortaleza.ns.porkbun.com2026-08-30 → 2026-09-02 · 3 obs

○ 2017-04-02 22:39:14
● 2026-08-30 04:49:56
● 2026-09-02 09:51:20

●NSmaceio.ns.porkbun.com2026-08-30 → 2026-09-02 · 3 obs

○ 2017-04-02 22:39:14
● 2026-08-30 04:49:56
● 2026-09-02 09:51:20

○NSns09.domaincontrol.com2015-05-20 → 2017-04-02 · 4 obs

● 2015-05-20 15:06:14
● 2017-04-02 22:39:14
○ 2026-08-30 04:49:56
○ 2026-09-02 09:51:20

○NSns10.domaincontrol.com2015-05-20 → 2017-04-02 · 4 obs

● 2015-05-20 15:06:14
● 2017-04-02 22:39:14
○ 2026-08-30 04:49:56
○ 2026-09-02 09:51:20

○NSpark10.secureserver.net2017-04-02 → 2017-04-02 · 4 obs

○ 2015-05-20 15:06:14
● 2017-04-02 22:39:14
○ 2026-08-30 04:49:56
○ 2026-09-02 09:51:20

○NSpark9.secureserver.net2017-04-02 → 2017-04-02 · 4 obs

○ 2015-05-20 15:06:14
● 2017-04-02 22:39:14
○ 2026-08-30 04:49:56
○ 2026-09-02 09:51:20

●NSsalvador.ns.porkbun.com2026-08-30 → 2026-09-02 · 3 obs

○ 2017-04-02 22:39:14
● 2026-08-30 04:49:56
● 2026-09-02 09:51:20

●MXalt1.aspmx.l.google.com2026-08-30 → 2026-09-02 · 3 obs

○ 2017-04-02 22:39:14
● 2026-08-30 04:49:56
● 2026-09-02 09:51:20

●MXalt2.aspmx.l.google.com2026-08-30 → 2026-09-02 · 3 obs

○ 2017-04-02 22:39:14
● 2026-08-30 04:49:56
● 2026-09-02 09:51:20

●MXalt3.aspmx.l.google.com2026-08-30 → 2026-09-02 · 3 obs

○ 2017-04-02 22:39:14
● 2026-08-30 04:49:56
● 2026-09-02 09:51:20

●MXalt4.aspmx.l.google.com2026-08-30 → 2026-09-02 · 3 obs

○ 2017-04-02 22:39:14
● 2026-08-30 04:49:56
● 2026-09-02 09:51:20

●MXaspmx.l.google.com2026-08-30 → 2026-09-02 · 3 obs

○ 2017-04-02 22:39:14
● 2026-08-30 04:49:56
● 2026-09-02 09:51:20

○MXmailstore1.secureserver.net2015-05-20 → 2017-04-02 · 4 obs

● 2015-05-20 15:06:14
● 2017-04-02 22:39:14
○ 2026-08-30 04:49:56
○ 2026-09-02 09:51:20

○MXsmtp.secureserver.net2015-05-20 → 2017-04-02 · 4 obs

● 2015-05-20 15:06:14
● 2017-04-02 22:39:14
○ 2026-08-30 04:49:56
○ 2026-09-02 09:51:20

○A213.131.240.1742015-05-20 → 2017-04-02 · 4 obs

● 2015-05-20 15:06:14
● 2017-04-02 22:39:14
○ 2026-08-30 04:49:56
○ 2026-09-02 09:51:20

●A45.84.74.92026-08-30 → 2026-09-02 · 3 obs

○ 2017-04-02 22:39:14
● 2026-08-30 04:49:56
● 2026-09-02 09:51:20

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	m.gtld-servers.net, h.gtld-servers.net, e.gtld-servers.net, j.gtld-servers.net...	-
linuxsystemprogramming.com	maceio.ns.porkbun.com, salvador.ns.porkbun.com, fortaleza.ns.porkbun.com, curitiba.ns.porkbun.com	8 records

✅ Authoritative Response

Server:173.245.58.37

NS records: maceio.ns.porkbun.com, salvador.ns.porkbun.com, fortaleza.ns.porkbun.com, curitiba.ns.porkbun.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for linuxsystemprogramming.com (unsigned zone)

⏱️ Timing

Total: 426ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`45.84.74.9`
NS	4	`curitiba.ns.porkbun.com, fortaleza.ns.porkbun.com...`
MX	5	`aspmx.l.google.com (pri: 1), alt3.aspmx.l.google.com (pri: 10)...`
SOA	1	`curitiba.ns.porkbun.com dns.cloudflare.c`

📌 Glue Records Collected

Total: 8

Out-of-bailiwick: 8 (maceio.ns.porkbun.com, maceio.ns.porkbun.com, salvador.ns.porkbun.com...)

Analysis

IP Addresses

linuxsystemprogramming.com points to a single IP number: 45.84.74.9.

Additional host names — michaelkerrisk.com, man7.org, linuxprogramminginterface.com and two others — share IP numbers with linuxsystemprogramming.com.

Name Servers

linuxsystemprogramming.com has four authoritative name servers: curitiba.ns.porkbun.com, fortaleza.ns.porkbun.com, maceio.ns.porkbun.com and salvador.ns.porkbun.com.

The name servers of linuxsystemprogramming.com overlap at least partially with those of other domains — among them lazard.io, sidjo.com, tryadvisoryview.info and two more.

Each of the four hosts curitiba.ns.porkbun.com, fortaleza.ns.porkbun.com, maceio.ns.porkbun.com and salvador.ns.porkbun.com has two IP addresses. curitiba.ns.porkbun.com points to 173.245.58.37 and 2400:cb00:2049:1::adf5:3a25. fortaleza.ns.porkbun.com points to 162.159.8.140 and 2400:cb00:2049:1::a29f:88c. maceio.ns.porkbun.com points to 162.159.11.180 and 2400:cb00:2049:1::a29f:bb4. salvador.ns.porkbun.com points to 162.159.10.150 and 2400:cb00:2049:1::a29f:a96.

Mail Servers

Five mail servers handle linuxsystemprogramming.com: aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com and two others.

linuxsystemprogramming.com shares mail servers — at least in part — with other domains, including editorinchiefmedia.com, sipfoundry.org, vumarketingllc.com and two others.

These mail servers are frequently used alongside mail servers alt3.aspmx.l.google.com, alt4.aspmx.l.google.com, aspmx2.googlemail.com and 3 other.

Host names with two IP numbers:

aspmx.l.google.com directs traffic to 173.194.45.26 and 2607:f8b0:4004:c1d::1a.

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

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 192.178.223.27 and 2a00:1450:4009:c0f::1b.

alt4.aspmx.l.google.com directs traffic to 172.253.157.26 and 2a00:1450:400c:c23::1b.