fbcourses.com - dns.ninja

`fbcourses.com`

DNSSEC	⚠️ Not signed
A	3.33.139.32^{🇺🇸 Amazon3.33.128.0/20}
		PTR	`aeedc42b70c898c66.awsglobalaccelerator.com`
NS	`ns1.markmonitor.com` ⭐
		A	2620:10a:80a8::1^{🇨🇦 CIRA-22620:10a:80a8::/48 markmonitor v6 cloud1 979 Bank Street, Suite 400 Ottawa ON K1S 5K5 Canada}
		A	149.112.160.1^{🇨🇦 CIRA-2149.112.160.0/24 markmonitor v4 cloud1 979 Bank Street, Suite 400 Ottawa ON K1S 5K5 Canada}
NS	`ns2.markmonitor.com`
		A	2001:67c:10b8::1^{🇨🇭 RCODEZERO-ANYCAST-SEC22001:67c:10b8::/48 IPCOM-anycast-net}
			PTR	`ns2.markmonitor.com`
		A	176.97.158.1^{🇦🇹 RCODEZERO-ANYCAST-SEC2176.97.158.0/24 NICat-anycast-net}
			PTR	`ns2.markmonitor.com`
NS	`ns3.markmonitor.com`
		A	2620:10a:80a9::1^{🇨🇦 CIRA-32620:10a:80a9::/48 markmonitor v6 cloud2 979 Bank Street, Suite 400 Ottawa ON K1S 5K5 Canada}
		A	149.112.161.1^{🇨🇦 CIRA-3149.112.161.0/24 markmonitor v4 cloud2 979 Bank Street, Suite 400 Ottawa ON K1S 5K5 Canada}
NS	`ns4.markmonitor.com`
		A	2001:67c:1bc::1^{🇦🇹 RCODEZERO-ANYCAST-SEC1-TLD2001:67c:1bc::/48 IPCom-NET Anycast}
			PTR	`ns1.markmonitor.com`
		A	192.174.68.1^{🇦🇹 RCODEZERO-ANYCAST-SEC1-TLD192.174.68.0/24 NICat-anycast-net}
			PTR	`ns1.markmonitor.com`
NS	`ns5.markmonitor.com`
		A	2620:10a:80a8::2^{🇨🇦 CIRA-22620:10a:80a8::/48 markmonitor v6 cloud1 979 Bank Street, Suite 400 Ottawa ON K1S 5K5 Canada}
		A	149.112.160.2^{🇨🇦 CIRA-2149.112.160.0/24 markmonitor v4 cloud1 979 Bank Street, Suite 400 Ottawa ON K1S 5K5 Canada}
NS	`ns6.markmonitor.com`
		A	2001:67c:10b8::3^{🇨🇭 RCODEZERO-ANYCAST-SEC22001:67c:10b8::/48 IPCOM-anycast-net}
			PTR	`ns6.markmonitor.com`
		A	176.97.158.3^{🇦🇹 RCODEZERO-ANYCAST-SEC2176.97.158.0/24 NICat-anycast-net}
			PTR	`ns6.markmonitor.com`
NS	`ns7.markmonitor.com`
		A	2620:10a:80a9::2^{🇨🇦 CIRA-32620:10a:80a9::/48 markmonitor v6 cloud2 979 Bank Street, Suite 400 Ottawa ON K1S 5K5 Canada}
		A	149.112.161.2^{🇨🇦 CIRA-3149.112.161.0/24 markmonitor v4 cloud2 979 Bank Street, Suite 400 Ottawa ON K1S 5K5 Canada}
TXT	`v=spf1 -all`
SOA	`ns1.markmonitor.com`hostmaster@markmonitor.com 2023-10-05 #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=1780988236

Same first word

fbcourses.com

Similar names

subsforce.com

DNS History

12 records (8 active, 4 former)

○NSns1.dreamhost.com2008-03-08 → 2008-03-08 · 3 obs

● 2008-03-08 03:32:14
○ 2015-07-14 01:40:34
○ 2026-06-09 07:01:22

●NSns1.markmonitor.com2015-07-14 → 2026-06-09 · 3 obs

○ 2008-03-08 03:32:14
● 2015-07-14 01:40:34
● 2026-06-09 07:01:22

○NSns2.dreamhost.com2008-03-08 → 2008-03-08 · 3 obs

● 2008-03-08 03:32:14
○ 2015-07-14 01:40:34
○ 2026-06-09 07:01:22

●NSns2.markmonitor.com2015-07-14 → 2026-06-09 · 3 obs

○ 2008-03-08 03:32:14
● 2015-07-14 01:40:34
● 2026-06-09 07:01:22

○NSns3.dreamhost.com2008-03-08 → 2008-03-08 · 3 obs

● 2008-03-08 03:32:14
○ 2015-07-14 01:40:34
○ 2026-06-09 07:01:22

●NSns3.markmonitor.com2015-07-14 → 2026-06-09 · 3 obs

○ 2008-03-08 03:32:14
● 2015-07-14 01:40:34
● 2026-06-09 07:01:22

●NSns4.markmonitor.com2015-07-14 → 2026-06-09 · 3 obs

○ 2008-03-08 03:32:14
● 2015-07-14 01:40:34
● 2026-06-09 07:01:22

●NSns5.markmonitor.com2015-07-14 → 2026-06-09 · 3 obs

○ 2008-03-08 03:32:14
● 2015-07-14 01:40:34
● 2026-06-09 07:01:22

●NSns6.markmonitor.com2015-07-14 → 2026-06-09 · 3 obs

○ 2008-03-08 03:32:14
● 2015-07-14 01:40:34
● 2026-06-09 07:01:22

●NSns7.markmonitor.com2015-07-14 → 2026-06-09 · 3 obs

○ 2008-03-08 03:32:14
● 2015-07-14 01:40:34
● 2026-06-09 07:01:22

●A3.33.139.322026-04-21 → 2026-06-09 · 3 obs

○ 2017-06-03 09:53:58
● 2026-04-21 06:12:06
● 2026-06-09 07:01:22

○A72.52.10.142015-07-14 → 2017-06-03 · 5 obs

○ 2008-03-08 03:32:14
● 2015-07-14 01:40:34
● 2017-06-03 09:53:58
○ 2026-04-21 06:12:06
○ 2026-06-09 07:01:22

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
fbcourses.com	ns1.markmonitor.com, ns3.markmonitor.com, ns4.markmonitor.com, ns5.markmonitor.com...	14 records

✅ Authoritative Response

Server:149.112.161.1

NS records: ns1.markmonitor.com, ns3.markmonitor.com, ns4.markmonitor.com, ns5.markmonitor.com, ns6.markmonitor.com, ns7.markmonitor.com, ns2.markmonitor.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for fbcourses.com (unsigned zone)

⏱️ Timing

Total: 337ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`3.33.139.32`
NS	7	`ns1.markmonitor.com, ns2.markmonitor.com...`
TXT	1	`v=spf1 -all`
SOA	1	`ns1.markmonitor.com hostmaster.markmonit`

📌 Glue Records Collected

Total: 14

Out-of-bailiwick: 14 (ns1.markmonitor.com, ns1.markmonitor.com, ns3.markmonitor.com...)

Analysis

IP Addresses

fbcourses.com directs to one IP number, which is 3.33.139.32.

Among the host names that share IP numbers with fbcourses.com are www.aol-map.net, shopviviscal.com, journalthebible.com and two others.

Name Servers

The delegation for fbcourses.com covers 7 name servers — among them ns1.markmonitor.com, ns2.markmonitor.com and ns3.markmonitor.com, along with four others.

fbcourses.com partially shares its NS delegation with several other domains, including twiliobook.com, intuittaxlink.com, toppik.be and two others.

The name servers ns4.markmonitor.com, ns5.markmonitor.com, ns6.markmonitor.com and ns7.markmonitor.com are often found in use alongside these name servers.

Hosts with two IP numbers each:

ns1.markmonitor.com resolves to two addresses: 149.112.160.1 and 2620:10a:80a8::1.

ns2.markmonitor.com resolves to two addresses: 176.97.158.1 and 2001:67c:10b8::1.

ns3.markmonitor.com resolves to two addresses: 149.112.161.1 and 2620:10a:80a9::1.

ns4.markmonitor.com resolves to two addresses: 192.174.68.1 and 2001:67c:1bc::1.

ns5.markmonitor.com resolves to two addresses: 149.112.160.2 and 2620:10a:80a8::2.

ns6.markmonitor.com resolves to two addresses: 176.97.158.3 and 2001:67c:10b8::3.

ns7.markmonitor.com resolves to two addresses: 149.112.161.2 and 2620:10a:80a9::2.