`coursecracker.com`

DNSSEC	⚠️ Not signed
A	94.136.170.134^{🇬🇧 UKSERVERS-AS94.136.168.0/22}
NS	`dns1.supremedns.com` ⭐
		A	162.210.102.140^{🇺🇸 AS14555162.210.96.0/21 LiquidNet US LLC}
			PTR	`dns1.supremedns.com`
NS	`dns2.supremedns.com`
		A	198.23.56.4^{🇺🇸 AS14555198.23.48.0/20 LiquidNet US LLC}
			PTR	`dns2.supremedns.com`
NS	`dns3.supremedns.com` ⚠️ Not in parent delegation
		A	94.136.171.52^{🇬🇧 UKSERVERS-AS94.136.168.0/22}
			PTR	`dns3.supremedns.com`
NS	`dns4.supremedns.com` ⚠️ Not in parent delegation
		A	185.196.102.2^{🇬🇧 FICOLO185.196.102.0/24}
			PTR	`dns4.supremedns.com`
MX	`mx1.supremebox.com` ⭐
		A	198.23.53.39^{🇺🇸 AS14555198.23.48.0/20 LiquidNet US LLC}
			PTR	`mx1.supremebox.com`
MX	`mx2.supremebox.com` ⭐
		A	198.23.53.42^{🇺🇸 AS14555198.23.48.0/20 LiquidNet US LLC}
			PTR	`mx2.supremebox.com`
		A	198.23.53.116^{🇺🇸 AS14555198.23.48.0/20 LiquidNet US LLC}
			PTR	`mx2.supremebox.com`
TXT	`v=spf1 include:spf.supremebox.com mx -all`
SOA	`dns1.supremedns.com`root@uk.cloudlogin.co serial=1577695498

`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=1771291435

DNS History

20 records (7 active, 13 former)

●NSdns1.supremedns.com2020-01-09 → 2026-03-12 · 3 obs

○ 2017-02-06 20:54:16
● 2020-01-09 00:22:10
● 2026-03-12 02:36:14

●NSdns2.supremedns.com2020-01-09 → 2026-03-12 · 3 obs

○ 2017-02-06 20:54:16
● 2020-01-09 00:22:10
● 2026-03-12 02:36:14

●NSdns3.supremedns.com2020-01-09 → 2026-03-12 · 3 obs

○ 2017-02-06 20:54:16
● 2020-01-09 00:22:10
● 2026-03-12 02:36:14

●NSdns4.supremedns.com2020-01-09 → 2026-03-12 · 3 obs

○ 2017-02-06 20:54:16
● 2020-01-09 00:22:10
● 2026-03-12 02:36:14

○NSns1.brainydns.com2015-07-05 → 2017-02-06 · 7 obs

● 2015-07-05 21:39:32
○ 2015-11-11 21:37:06
○ 2016-02-10 18:35:14
● 2016-05-02 22:13:56
● 2017-02-06 20:54:16
○ 2020-01-09 00:22:10
○ 2026-03-12 02:36:14

○NSns1.coursecracker.com2015-11-11 → 2015-11-11 · 4 obs

○ 2015-07-05 21:39:32
● 2015-11-11 21:37:06
○ 2016-02-10 18:35:14
○ 2026-03-12 02:36:14

○NSns1.kirklanddc.com2016-02-10 → 2016-02-10 · 4 obs

○ 2015-11-11 21:37:06
● 2016-02-10 18:35:14
○ 2016-05-02 22:13:56
○ 2026-03-12 02:36:14

○NSns2.brainydns.com2015-07-05 → 2017-02-06 · 7 obs

● 2015-07-05 21:39:32
○ 2015-11-11 21:37:06
○ 2016-02-10 18:35:14
● 2016-05-02 22:13:56
● 2017-02-06 20:54:16
○ 2020-01-09 00:22:10
○ 2026-03-12 02:36:14

○NSns2.kirklanddc.com2016-02-10 → 2016-02-10 · 4 obs

○ 2015-11-11 21:37:06
● 2016-02-10 18:35:14
○ 2016-05-02 22:13:56
○ 2026-03-12 02:36:14

●MXmx1.supremebox.com2020-01-09 → 2026-03-12 · 2 obs

● 2020-01-09 00:22:10
● 2026-03-12 02:36:14

●MXmx2.supremebox.com2020-01-09 → 2026-03-12 · 2 obs

● 2020-01-09 00:22:10
● 2026-03-12 02:36:14

○A149.202.120.412017-02-06 → 2017-02-06 · 4 obs

○ 2016-05-02 22:13:56
● 2017-02-06 20:54:16
○ 2020-01-09 00:22:10
○ 2026-03-12 02:36:14

○A158.69.143.1102017-02-06 → 2017-02-06 · 3 obs

○ 2016-05-02 22:13:56
● 2017-02-06 20:54:16
○ 2026-03-12 02:36:14

○A158.69.143.972016-05-02 → 2016-05-02 · 4 obs

○ 2016-02-10 18:35:14
● 2016-05-02 22:13:56
○ 2017-02-06 20:54:16
○ 2026-03-12 02:36:14

○A158.69.143.982016-02-10 → 2016-02-10 · 4 obs

○ 2015-11-11 21:37:06
● 2016-02-10 18:35:14
○ 2016-05-02 22:13:56
○ 2026-03-12 02:36:14

○A158.69.145.482017-02-06 → 2017-02-06 · 3 obs

○ 2016-05-02 22:13:56
● 2017-02-06 20:54:16
○ 2026-03-12 02:36:14

○A184.172.106.422015-07-05 → 2015-11-11 · 4 obs

● 2015-07-05 21:39:32
● 2015-11-11 21:37:06
○ 2016-02-10 18:35:14
○ 2026-03-12 02:36:14

○A46.249.199.342020-01-09 → 2020-01-09 · 3 obs

○ 2017-02-06 20:54:16
● 2020-01-09 00:22:10
○ 2026-03-12 02:36:14

○A78.153.194.1002015-07-05 → 2015-07-05 · 3 obs

● 2015-07-05 21:39:32
○ 2017-02-06 20:54:16
○ 2026-03-12 02:36:14

●A94.136.170.1342026-03-12 → 2026-03-12 · 2 obs

○ 2020-01-09 00:22:10
● 2026-03-12 02:36:14

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
coursecracker.com	dns1.supremedns.com, dns2.supremedns.com	2 records

✅ Authoritative Response

Server: 198.23.56.4

NS records: dns1.supremedns.com, dns2.supremedns.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for coursecracker.com (unsigned zone)

⏱️ Timing

Total: 94ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`94.136.170.134`
NS	4	`dns1.supremedns.com, dns3.supremedns.com...`
MX	2	`mx1.supremebox.com (pri: 10), mx2.supremebox.com (pri: 10)`
TXT	1	`v=spf1 include:spf.supremebox.com mx -al`
SOA	1	`dns1.supremedns.com root.uk.cloudlogin.c`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (dns1.supremedns.com, dns2.supremedns.com)

Analysis

IP Addresses

coursecracker.com points to a single IP number: 94.136.170.134.

other host names for instance pubblicarrello.co.uk, eliksir.co.me, revistavinissimo.com, www.pokersitedirectory.net and hgd2231basdf.info share IP numbers with coursecracker.com.

Name Servers

coursecracker.com is delegated to four name servers: dns1.supremedns.com, dns2.supremedns.com, dns3.supremedns.com and dns4.supremedns.com.

coursecracker.com at least partially shares name servers with other domains, for instance 54.46.117.208.in-addr.arpa, dfgreen.com, 115.161.10.170.in-addr.arpa, 60.102.196.185.in-addr.arpa and 81.101.210.162.in-addr.arpa.

These name servers are often used with dnsmaster1.bastun.net and dnsmaster2.bastun.net.

Host names with one IP number:

dns1.supremedns.com points to 162.210.102.140

dns2.supremedns.com points to 198.23.56.4

dns3.supremedns.com points to 94.136.171.52

dns4.supremedns.com points to 185.196.102.2

Mail Servers

coursecracker.com is handled by two mail servers: mx1.supremebox.com and mx2.supremebox.com.

coursecracker.com shares the same mail server setup as other domains, for instance www.imakeyoudollars.com, philmerry.com, csin-online.org, padibox.com and patriko.gr.

coursecracker.com shares some mail servers with other domains, at least partially, for instance comptool.net and www.sebasti(0x616e616c)liance.com.

Host names with two IP numbers: mx2.supremebox.com points to 198.23.53.42 and 198.23.53.116.

Host names with one IP number: mx1.supremebox.com points to 198.23.53.39.

coursecracker.com - robtex.com