🛡️Domain Reputation CheckBlocklist, phishing & malware status→

`linearprogramming.com`

DNSSEC	⚠️ Not signed
A	45.55.124.52^{🇺🇸 DIGITALOCEAN45.55.124.0/22 DigitalOcean}
NS	`ns4.active-dns.com` ⭐
		A	162.251.82.124^{🇺🇸 Cloudflare162.251.82.0/24 PDR}
			PTR	`162.251.82.124.reverse.myorderbox.com`
		A	162.251.82.125^{🇺🇸 Cloudflare162.251.82.0/24 PDR}
			PTR	`162.251.82.125.reverse.myorderbox.com`
		A	162.251.82.252^{🇺🇸 Cloudflare162.251.82.0/24 PDR}
			PTR	`162.251.82.252.reverse.myorderbox.com`
		A	162.251.82.253^{🇺🇸 Cloudflare162.251.82.0/24 PDR}
			PTR	`162.251.82.253.reverse.myorderbox.com`
NS	`ns1.active-dns.com`
		A	162.251.82.122^{🇺🇸 Cloudflare162.251.82.0/24 PDR}
			PTR	`162.251.82.122.reverse.myorderbox.com`
		A	162.251.82.123^{🇺🇸 Cloudflare162.251.82.0/24 PDR}
			PTR	`162.251.82.123.reverse.myorderbox.com`
		A	162.251.82.250^{🇺🇸 Cloudflare162.251.82.0/24 PDR}
			PTR	`162.251.82.250.reverse.myorderbox.com`
		A	162.251.82.251^{🇺🇸 Cloudflare162.251.82.0/24 PDR}
			PTR	`162.251.82.251.reverse.myorderbox.com`
NS	`ns2.active-dns.com`
		A	162.251.82.120^{🇺🇸 Cloudflare162.251.82.0/24 PDR}
			PTR	`162.251.82.120.reverse.myorderbox.com`
		A	162.251.82.121^{🇺🇸 Cloudflare162.251.82.0/24 PDR}
			PTR	`162.251.82.121.reverse.myorderbox.com`
		A	162.251.82.248^{🇺🇸 Cloudflare162.251.82.0/24 PDR}
			PTR	`162.251.82.248.reverse.myorderbox.com`
		A	162.251.82.249^{🇺🇸 Cloudflare162.251.82.0/24 PDR}
			PTR	`162.251.82.249.reverse.myorderbox.com`
NS	`ns3.active-dns.com`
		A	162.251.82.118^{🇺🇸 Cloudflare162.251.82.0/24 PDR}
			PTR	`162.251.82.118.reverse.myorderbox.com`
		A	162.251.82.119^{🇺🇸 Cloudflare162.251.82.0/24 PDR}
			PTR	`162.251.82.119.reverse.myorderbox.com`
		A	162.251.82.246^{🇺🇸 Cloudflare162.251.82.0/24 PDR}
			PTR	`162.251.82.246.reverse.myorderbox.com`
		A	162.251.82.247^{🇺🇸 Cloudflare162.251.82.0/24 PDR}
			PTR	`162.251.82.247.reverse.myorderbox.com`
MX	`us2.mx1.mailhostbox.com` ⭐
		A	162.215.3.26^{🇺🇸 EIGI162.214.0.0/15 Unified Layer}
			PTR	`162-215-3-26.unifiedlayer.com`
MX	`us2.mx2.mailhostbox.com` ⭐
		A	162.215.2.27^{🇺🇸 EIGI162.214.0.0/15 Unified Layer}
			PTR	`162-215-2-27.unifiedlayer.com`
MX	`us2.mx3.mailhostbox.com` ⭐
		A	162.215.3.25^{🇺🇸 EIGI162.214.0.0/15 Unified Layer}
			PTR	`162-215-3-25.unifiedlayer.com`
TXT	`v=spf1 redirect=_spf.mailhostbox.com`
SOA	`ns4.active-dns.com`niksah@gmail.com 2025-03-16 #3

`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=1794304191

Subdomains

mail.linearprogramming.com

Same first word

linearprogramming.com.ph

linearprogramming.com

linearprogramming.org

Similar names

ilearnprogramming.com

Previous names

Next names

DNS History

17 records (8 active, 9 former)

○NSbuy.internettraffic.com2015-05-24 → 2016-04-08 · 4 obs

● 2015-05-24 12:24:54
● 2016-04-08 11:43:38
○ 2017-05-20 18:49:48
○ 2026-11-10 10:08:08

●NSns1.active-dns.com2026-08-31 → 2026-11-10 · 3 obs

○ 2017-05-20 18:49:48
● 2026-08-31 14:32:16
● 2026-11-10 10:08:08

○NSns1.bluehost.com2017-05-20 → 2017-05-20 · 4 obs

○ 2016-04-08 11:43:38
● 2017-05-20 18:49:48
○ 2026-08-31 14:32:16
○ 2026-11-10 10:08:08

●NSns2.active-dns.com2026-08-31 → 2026-11-10 · 3 obs

○ 2017-05-20 18:49:48
● 2026-08-31 14:32:16
● 2026-11-10 10:08:08

○NSns2.bluehost.com2017-05-20 → 2017-05-20 · 4 obs

○ 2016-04-08 11:43:38
● 2017-05-20 18:49:48
○ 2026-08-31 14:32:16
○ 2026-11-10 10:08:08

●NSns3.active-dns.com2026-08-31 → 2026-11-10 · 3 obs

○ 2017-05-20 18:49:48
● 2026-08-31 14:32:16
● 2026-11-10 10:08:08

●NSns4.active-dns.com2026-08-31 → 2026-11-10 · 3 obs

○ 2017-05-20 18:49:48
● 2026-08-31 14:32:16
● 2026-11-10 10:08:08

○NSsell.internettraffic.com2015-05-24 → 2016-04-08 · 4 obs

● 2015-05-24 12:24:54
● 2016-04-08 11:43:38
○ 2017-05-20 18:49:48
○ 2026-11-10 10:08:08

○MXmail.b-io.co2016-09-15 → 2016-09-15 · 3 obs

● 2016-09-15 03:25:44
○ 2017-05-20 18:49:48
○ 2026-11-10 10:08:08

○MXmail.linearprogramming.com2017-05-20 → 2017-05-20 · 4 obs

○ 2016-09-15 03:25:44
● 2017-05-20 18:49:48
○ 2026-08-31 14:32:16
○ 2026-11-10 10:08:08

●MXus2.mx1.mailhostbox.com2026-08-31 → 2026-11-10 · 3 obs

○ 2017-05-20 18:49:48
● 2026-08-31 14:32:16
● 2026-11-10 10:08:08

●MXus2.mx2.mailhostbox.com2026-08-31 → 2026-11-10 · 3 obs

○ 2017-05-20 18:49:48
● 2026-08-31 14:32:16
● 2026-11-10 10:08:08

●MXus2.mx3.mailhostbox.com2026-08-31 → 2026-11-10 · 3 obs

○ 2017-05-20 18:49:48
● 2026-08-31 14:32:16
● 2026-11-10 10:08:08

○A208.91.197.1322016-09-15 → 2016-09-15 · 4 obs

○ 2016-04-08 11:43:38
● 2016-09-15 03:25:44
○ 2017-05-20 18:49:48
○ 2026-11-10 10:08:08

●A45.55.124.522026-08-31 → 2026-11-10 · 3 obs

○ 2017-05-20 18:49:48
● 2026-08-31 14:32:16
● 2026-11-10 10:08:08

○A50.87.180.1652017-05-20 → 2017-05-20 · 4 obs

○ 2016-09-15 03:25:44
● 2017-05-20 18:49:48
○ 2026-08-31 14:32:16
○ 2026-11-10 10:08:08

○A69.172.201.2082015-05-24 → 2016-04-08 · 4 obs

● 2015-05-24 12:24:54
● 2016-04-08 11:43:38
○ 2016-09-15 03:25:44
○ 2026-11-10 10:08:08

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	m.gtld-servers.net, k.gtld-servers.net, c.gtld-servers.net, g.gtld-servers.net...	-
linearprogramming.com	ns1.active-dns.com, ns2.active-dns.com, ns3.active-dns.com, ns4.active-dns.com	16 records

✅ Authoritative Response

Server:162.251.82.124

NS records: ns1.active-dns.com, ns2.active-dns.com, ns3.active-dns.com, ns4.active-dns.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

Root DNSKEY fetch failed: Error: connect EADDRNOTAVAIL 198.41.0.4:53 - Local (0.0.0.0:0)

⏱️ Timing

Total: 384ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`45.55.124.52`
NS	4	`ns1.active-dns.com, ns3.active-dns.com...`
MX	3	`us2.mx3.mailhostbox.com (pri: 100), us2.mx1.mailhostbox.com (pri: 100)...`
TXT	1	`v=spf1 redirect=_spf.mailhostbox.com`
SOA	1	`ns4.active-dns.com niksah.gmail.com`

📌 Glue Records Collected

Total: 16

Out-of-bailiwick: 16 (ns1.active-dns.com, ns1.active-dns.com, ns1.active-dns.com...)

Analysis

Hierarchy

linearprogramming.com is the parent zone for mail.linearprogramming.com.

IP Addresses

linearprogramming.com resolves to one IP address: 45.55.124.52.

globallyoptimize.com, gnosispress.com, theoptimizers.com and two other host names share IP numbers with linearprogramming.com.

Name Servers

The authoritative name servers for linearprogramming.com are ns1.active-dns.com, ns2.active-dns.com, ns3.active-dns.com and ns4.active-dns.com.

linearprogramming.com partially shares its NS delegation with several other domains, including ulysses-group.com, flexivider.com, liveonlionheart.com and two others.

These name servers often co-occur with the name servers 208.91.197.91.

Each hostname ns1.active-dns.com, ns2.active-dns.com, ns3.active-dns.com and ns4.active-dns.com has four IP addresses: ns1.active-dns.com has 162.251.82.122, 162.251.82.123, 162.251.82.250 and 162.251.82.251; ns2.active-dns.com has 162.251.82.120, 162.251.82.121, 162.251.82.248 and 162.251.82.249; ns3.active-dns.com has 162.251.82.118, 162.251.82.119, 162.251.82.246 and 162.251.82.247; ns4.active-dns.com has 162.251.82.124, 162.251.82.125, 162.251.82.252 and 162.251.82.253.

Mail Servers

linearprogramming.com uses three mail servers — us2.mx1.mailhostbox.com, us2.mx2.mailhostbox.com and us2.mx3.mailhostbox.com.

linearprogramming.com has at least partial mail server overlap with other domains such as indraprasthdynamics.com, nickytritton.co.uk, kphstore.com and two more.

These mail servers commonly appear together with aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com and two other mail servers.

us2.mx1.mailhostbox.com, us2.mx2.mailhostbox.com and us2.mx3.mailhostbox.com each resolve to a single IP address: us2.mx1.mailhostbox.com resolves to 162.215.3.26, us2.mx2.mailhostbox.com resolves to 162.215.2.27 and us2.mx3.mailhostbox.com resolves to 162.215.3.25.

linearprogramming.com - robtex.com