🛡️Domain Reputation CheckBlocklist, phishing & malware status→

`programmingmasterclass.com`

DNSSEC	⚠️ Not signed
A	37.16.0.21^{🇺🇸 FLYIO-137.16.0.0/23 Fly.io Edge Network}
		PTR	`ip-37-16-0-21.customer.flyio.net`
NS	`dns1.bigrock.in` ⭐
		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	`dns2.bigrock.in`
		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	`dns3.bigrock.in`
		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`
NS	`dns4.bigrock.in`
		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`
SOA	`dns1.bigrock.in`gauravjain2727@gmail.com 2025-03-21 #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=1788197870

Same first word

programmingmasterclass.com

Previous names

Next names

DNS History

13 records (5 active, 8 former)

●NSdns1.bigrock.in2026-08-30 → 2026-08-31 · 3 obs

○ 2020-01-31 12:03:50
● 2026-08-30 06:58:44
● 2026-08-31 17:49:18

●NSdns2.bigrock.in2026-08-30 → 2026-08-31 · 3 obs

○ 2020-01-31 12:03:50
● 2026-08-30 06:58:44
● 2026-08-31 17:49:18

●NSdns3.bigrock.in2026-08-30 → 2026-08-31 · 3 obs

○ 2020-01-31 12:03:50
● 2026-08-30 06:58:44
● 2026-08-31 17:49:18

●NSdns4.bigrock.in2026-08-30 → 2026-08-31 · 3 obs

○ 2020-01-31 12:03:50
● 2026-08-30 06:58:44
● 2026-08-31 17:49:18

○NSns1.gratisdns.dk2015-05-25 → 2015-12-11 · 4 obs

● 2015-05-25 05:12:18
● 2015-12-11 07:57:04
○ 2016-03-17 10:54:48
○ 2026-08-31 17:49:18

○NSns2.gratisdns.dk2015-05-25 → 2015-12-11 · 4 obs

● 2015-05-25 05:12:18
● 2015-12-11 07:57:04
○ 2016-03-17 10:54:48
○ 2026-08-31 17:49:18

○NSns3.gratisdns.dk2015-05-25 → 2015-12-11 · 4 obs

● 2015-05-25 05:12:18
● 2015-12-11 07:57:04
○ 2016-03-17 10:54:48
○ 2026-08-31 17:49:18

○NSns4.gratisdns.dk2015-05-25 → 2015-12-11 · 4 obs

● 2015-05-25 05:12:18
● 2015-12-11 07:57:04
○ 2016-03-17 10:54:48
○ 2026-08-31 17:49:18

○NSns5.gratisdns.dk2015-05-25 → 2015-12-11 · 4 obs

● 2015-05-25 05:12:18
● 2015-12-11 07:57:04
○ 2016-03-17 10:54:48
○ 2026-08-31 17:49:18

○NSns77.domaincontrol.com2020-01-31 → 2020-01-31 · 4 obs

○ 2016-03-17 10:54:48
● 2020-01-31 12:03:50
○ 2026-08-30 06:58:44
○ 2026-08-31 17:49:18

○NSns78.domaincontrol.com2020-01-31 → 2020-01-31 · 4 obs

○ 2016-03-17 10:54:48
● 2020-01-31 12:03:50
○ 2026-08-30 06:58:44
○ 2026-08-31 17:49:18

●A37.16.0.212026-08-30 → 2026-08-31 · 3 obs

○ 2020-01-31 12:03:50
● 2026-08-30 06:58:44
● 2026-08-31 17:49:18

○A50.63.202.502020-01-31 → 2020-01-31 · 3 obs

● 2020-01-31 12:03:50
○ 2026-08-30 06:58:44
○ 2026-08-31 17:49:18

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
programmingmasterclass.com	dns1.bigrock.in, dns2.bigrock.in, dns3.bigrock.in, dns4.bigrock.in	-

✅ Authoritative Response

Server:162.251.82.120

NS records: dns1.bigrock.in, dns2.bigrock.in, dns3.bigrock.in, dns4.bigrock.in

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for programmingmasterclass.com (unsigned zone)

⏱️ Timing

Total: 1725ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`37.16.0.21`
NS	4	`dns4.bigrock.in, dns3.bigrock.in...`
SOA	1	`dns1.bigrock.in gauravjain2727.gmail.com`

Analysis

IP Addresses

programmingmasterclass.com has exactly one IP address — 37.16.0.21.

taxwizers.com, smilinginvestors.com, avadheshmaurya.com plus two other host names have IP numbers in common with programmingmasterclass.com.

Name Servers

Four name servers handle the delegation for programmingmasterclass.com: dns1.bigrock.in, dns2.bigrock.in, dns3.bigrock.in and dns4.bigrock.in.

programmingmasterclass.com shares at least some of its name servers with other domains, including robodog.in, regenfi.tech, mylittleone.co.in and two others.

These name servers are frequently seen alongside the name servers 208.91.197.91.

Each of the host names dns1.bigrock.in, dns2.bigrock.in, dns3.bigrock.in and dns4.bigrock.in resolves to four IP addresses: dns1.bigrock.in resolves to 162.251.82.122, 162.251.82.123, 162.251.82.250 and 162.251.82.251; dns2.bigrock.in resolves to 162.251.82.120, 162.251.82.121, 162.251.82.248 and 162.251.82.249; dns3.bigrock.in resolves to 162.251.82.118, 162.251.82.119, 162.251.82.246 and 162.251.82.247; dns4.bigrock.in resolves to 162.251.82.124, 162.251.82.125, 162.251.82.252 and 162.251.82.253.

programmingmasterclass.com - robtex.com