blockcourse.com - dns.ninja

`blockcourse.com`

DNSSEC	⚠️ Not signed
A	2600:1f18:4ae:c606:78d4:4260:db4e:aeee^{🇺🇸 Amazon2600:1f18::/35 AMAZON EC2 IAD prefix}
A	13.223.25.84^{🇺🇸 Amazon13.216.0.0/13 EC2 IAD prefix}
A	54.243.117.197^{🇺🇸 Amazon54.242.0.0/15 EC2 IAD prefix}
NS	`ns1.namebrightdns.com` ⭐
		A	2600:1f18:683a:ae1a:6900:d1bd:7672:d0ca^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	2600:1f18:683a:ae1a:7bc2:638d:8ca6:fcc4^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	2600:1f18:683a:ae1b:d57d:390a:64b4:d4f1^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	52.203.211.134^{🇺🇸 Amazon52.200.0.0/13 EC2 IAD prefix}
		A	52.204.81.90^{🇺🇸 Amazon52.200.0.0/13 EC2 IAD prefix}
NS	`nsg1.namebrightdns.com`
		A	2600:1f18:683a:ae1a:4a5c:f736:fa58:d85^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	2600:1f18:683a:ae1a:7b03:f4b:4bfa:8287^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	2600:1f18:683a:ae1a:b159:2be8:f48c:b374^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	2600:1f18:683a:ae1a:c24f:b8c7:9b9:ecc7^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	2600:1f18:683a:ae1a:fdd1:15c7:6054:2136^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	2600:1f18:683a:ae1b:b942:bb73:2f59:d7af^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	13.221.131.54^{🇺🇸 Amazon13.216.0.0/13 EC2 IAD prefix}
		A	13.222.195.178^{🇺🇸 Amazon13.216.0.0/13 EC2 IAD prefix}
		A	34.201.137.124^{🇺🇸 Amazon34.192.0.0/12 EC2 IAD prefix}
		A	52.55.198.41^{🇺🇸 Amazon52.54.0.0/15 EC2 Region prefix}
		A	54.158.6.81^{🇺🇸 Amazon54.156.0.0/14 EC2 IAD prefix}
		A	54.175.130.15^{🇺🇸 Amazon54.174.0.0/15 EC2 IAD prefix}
		A	54.225.6.209^{🇺🇸 Amazon54.224.0.0/15 EC2 IAD prefix}
NS	`nsg2.namebrightdns.com`
		A	2600:1f18:683a:ae1a:cc5d:cd19:dd5:828e^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	2600:1f18:683a:ae1a:d284:dec6:9e2a:bb3e^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	2600:1f18:683a:ae1b:1f8d:cff1:8a4b:e4be^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	2600:1f18:683a:ae1b:347e:af67:cf6c:430a^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	2600:1f18:683a:ae1b:5b81:82bc:6de0:b02c^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	2600:1f18:683a:ae1b:da4a:4683:1131:8bce^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	3.80.109.14^{🇺🇸 Amazon3.80.0.0/12 EC2 IAD prefix}
		A	3.84.244.43^{🇺🇸 Amazon3.80.0.0/12 EC2 IAD prefix}
		A	3.88.142.32^{🇺🇸 Amazon3.80.0.0/12 EC2 IAD prefix}
		A	18.232.139.44^{🇺🇸 Amazon18.232.0.0/14 EC2 IAD prefix}
		A	54.242.183.21^{🇺🇸 Amazon54.242.0.0/15 EC2 IAD prefix}
		A	98.81.3.34^{🇺🇸 Amazon98.80.0.0/13 EC2 IAD Prefix}
		A	98.83.212.177^{🇺🇸 Amazon98.80.0.0/13 EC2 IAD Prefix}
TXT	`afternic-verification-G9G3tM8T8EwEizzPzjGJWF`
TXT	`v=spf1 -all`
SOA	`ns1.namebrightdns.com`dns@namebright.com 2026-06-29 #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=1782715655

Same first word

blockcourse.com

Similar names

blocksource.com

blocksource.nl

crookesclub.com

sourceblock.net

crookesclub.co.uk

DNS History

12 records (6 active, 6 former)

●NSns1.namebrightdns.com2026-04-10 → 2026-06-29 · 3 obs

○ 2017-05-08 20:55:28
● 2026-04-10 08:30:52
● 2026-06-29 07:02:38

○NSns37.domaincontrol.com2017-05-08 → 2017-05-08 · 3 obs

● 2017-05-08 20:55:28
○ 2026-04-10 08:30:52
○ 2026-06-29 07:02:38

○NSns38.domaincontrol.com2017-05-08 → 2017-05-08 · 3 obs

● 2017-05-08 20:55:28
○ 2026-04-10 08:30:52
○ 2026-06-29 07:02:38

●NSnsg1.namebrightdns.com2026-04-10 → 2026-06-29 · 3 obs

○ 2017-05-08 20:55:28
● 2026-04-10 08:30:52
● 2026-06-29 07:02:38

●NSnsg2.namebrightdns.com2026-04-10 → 2026-06-29 · 3 obs

○ 2017-05-08 20:55:28
● 2026-04-10 08:30:52
● 2026-06-29 07:02:38

○MXmailstore1.secureserver.net2017-05-08 → 2017-05-08 · 3 obs

● 2017-05-08 20:55:28
○ 2026-04-10 08:30:52
○ 2026-06-29 07:02:38

○MXsmtp.secureserver.net2017-05-08 → 2017-05-08 · 3 obs

● 2017-05-08 20:55:28
○ 2026-04-10 08:30:52
○ 2026-06-29 07:02:38

●A13.223.25.842026-04-10 → 2026-06-29 · 3 obs

○ 2017-05-08 20:55:28
● 2026-04-10 08:30:52
● 2026-06-29 07:02:38

○A2600:1f18:4ae:c605:dd5d:b838:5816:d7fb2026-04-10 → 2026-04-10 · 4 obs

○ 2017-05-08 20:55:28
● 2026-04-10 08:30:52
○ 2026-06-29 07:02:34
○ 2026-06-29 07:02:38

●A2600:1f18:4ae:c606:78d4:4260:db4e:aeee2026-04-10 → 2026-06-29 · 3 obs

○ 2017-05-08 20:55:28
● 2026-04-10 08:30:52
● 2026-06-29 07:02:38

○A50.63.202.502017-05-08 → 2017-05-08 · 3 obs

● 2017-05-08 20:55:28
○ 2026-04-10 08:30:52
○ 2026-06-29 07:02:38

●A54.243.117.1972026-04-10 → 2026-06-29 · 3 obs

○ 2017-05-08 20:55:28
● 2026-04-10 08:30:52
● 2026-06-29 07:02:38

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	f.gtld-servers.net, m.gtld-servers.net, j.gtld-servers.net, g.gtld-servers.net...	-
blockcourse.com	nsg1.namebrightdns.com, nsg2.namebrightdns.com	26 records

✅ Authoritative Response

Server:18.232.139.44

NS records: nsg1.namebrightdns.com, nsg2.namebrightdns.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for blockcourse.com (unsigned zone)

⏱️ Timing

Total: 359ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`13.223.25.84, 54.243.117.197`
AAAA	1	`2600:1f18:4ae:c606:78d4:4260:db4e:aeee`
NS	2	`nsg2.namebrightdns.com, nsg1.namebrightdns.com`
TXT	2	`v=spf1 -all, afternic-verification-G9G3tM8T8EwEizzPzj`
SOA	1	`ns1.namebrightdns.com dns.namebright.com`

📌 Glue Records Collected

Total: 26

Out-of-bailiwick: 26 (nsg1.namebrightdns.com, nsg1.namebrightdns.com, nsg1.namebrightdns.com...)

Analysis

IP Addresses

blockcourse.com maps to three IP numbers — 13.223.25.84, 54.243.117.197 and 2600:1f18:4ae:c606:78d4:4260:db4e:aeee.

Additional host names — 108-166-79-15.static.cloud-ips.com, dc-eefed2e0.alfamu.com, silverveil.com and two others — share IP numbers with blockcourse.com.

Name Servers

blockcourse.com is served by three name servers: ns1.namebrightdns.com, nsg1.namebrightdns.com and nsg2.namebrightdns.com.

blockcourse.com has at least partial name server overlap with other domains, such as yourdistrictnews.com, waspos.com, mailserver.crysse.com and two others.

These name servers tend to appear together with the name servers ns2.namebrightdns.com, domain-for-sale.hugedomainsdns.com and forsale.hugedomainsdns.com.

Host names with 13 IP numbers:

nsg1.namebrightdns.com maps to 13.221.131.54, 13.222.195.178, 34.201.137.124 and 10 additional IP addresses.

nsg2.namebrightdns.com maps to 3.80.109.14, 3.84.244.43, 3.88.142.32 and 10 additional IP addresses.

Host names that resolve to five IP addresses:

ns1.namebrightdns.com points to 52.203.211.134, 52.204.81.90, 2600:1f18:683a:ae1a:6900:d1bd:7672:d0ca and two other IP addresses.