`blackboardextensions.com`

DNSSEC	⚠️ Not signed
A	20.85.72.68^{🇺🇸 Microsoft20.64.0.0/10}
NS	`ns-286.awsdns-35.com` ⭐
		A	2600:9000:5301:1e00::1^{🇺🇸 Amazon2600:9000:5301::/48 - CloudFront}
			PTR	`ns-286.awsdns-35.com`
		A	205.251.193.30^{🇺🇸 Amazon205.251.193.0/24 prefix}
			PTR	`ns-286.awsdns-35.com`
NS	`ns-1040.awsdns-02.org`
		A	2600:9000:5304:1000::1^{🇺🇸 Amazon2600:9000:5304::/48 - CloudFront}
			PTR	`ns-1040.awsdns-02.org`
		A	205.251.196.16^{🇺🇸 Amazon205.251.196.0/24 prefix}
			PTR	`ns-1040.awsdns-02.org`
NS	`ns-1994.awsdns-57.co.uk`
		A	2600:9000:5307:ca00::1^{🇺🇸 Amazon2600:9000:5307::/48 - CloudFront}
			PTR	`ns-1994.awsdns-57.co.uk`
		A	205.251.199.202^{🇺🇸 Amazon205.251.199.0/24 prefix}
			PTR	`ns-1994.awsdns-57.co.uk`
NS	`ns-713.awsdns-25.net`
		A	2600:9000:5302:c900::1^{🇺🇸 Amazon2600:9000:5302::/48 - CloudFront}
			PTR	`ns-713.awsdns-25.net`
		A	205.251.194.201^{🇺🇸 Amazon205.251.194.0/24 prefix}
			PTR	`ns-713.awsdns-25.net`
TXT	`v=spf1 -all`
SOA	`ns-286.awsdns-35.com`awsdns-hostmaster@amazon.com serial=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=1778874476

Same first word

blackboardextensions.com

DNS History

11 records (5 active, 6 former)

○NSdnsmaster01.blackboard.com2015-09-02 → 2017-08-27 · 4 obs

● 2015-09-02 11:25:52
● 2017-08-27 02:14:18
○ 2026-03-30 00:54:36
○ 2026-05-15 19:49:04

●NSns-1040.awsdns-02.org2026-03-30 → 2026-05-15 · 3 obs

○ 2017-08-27 02:14:18
● 2026-03-30 00:54:36
● 2026-05-15 19:49:04

●NSns-1994.awsdns-57.co.uk2026-03-30 → 2026-05-15 · 3 obs

○ 2017-08-27 02:14:18
● 2026-03-30 00:54:36
● 2026-05-15 19:49:04

●NSns-286.awsdns-35.com2026-03-30 → 2026-05-15 · 3 obs

○ 2017-08-27 02:14:18
● 2026-03-30 00:54:36
● 2026-05-15 19:49:04

●NSns-713.awsdns-25.net2026-03-30 → 2026-05-15 · 3 obs

○ 2017-08-27 02:14:18
● 2026-03-30 00:54:36
● 2026-05-15 19:49:04

○NSns1.blackboard.com2015-09-02 → 2017-08-27 · 4 obs

● 2015-09-02 11:25:52
● 2017-08-27 02:14:18
○ 2026-03-30 00:54:36
○ 2026-05-15 19:49:04

○NSns2.blackboard.com2015-09-02 → 2017-08-27 · 4 obs

● 2015-09-02 11:25:52
● 2017-08-27 02:14:18
○ 2026-03-30 00:54:36
○ 2026-05-15 19:49:04

○NSns3.blackboard.com2015-09-02 → 2017-08-27 · 4 obs

● 2015-09-02 11:25:52
● 2017-08-27 02:14:18
○ 2026-03-30 00:54:36
○ 2026-05-15 19:49:04

○NSns4.blackboard.com2015-09-02 → 2017-08-27 · 4 obs

● 2015-09-02 11:25:52
● 2017-08-27 02:14:18
○ 2026-03-30 00:54:36
○ 2026-05-15 19:49:04

●A20.85.72.682026-03-30 → 2026-05-15 · 3 obs

○ 2017-08-27 02:14:18
● 2026-03-30 00:54:36
● 2026-05-15 19:49:04

○A69.196.244.992015-09-02 → 2017-08-27 · 4 obs

● 2015-09-02 11:25:52
● 2017-08-27 02:14:18
○ 2026-03-30 00:54:36
○ 2026-05-15 19:49:04

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
blackboardextensions.com	ns-713.awsdns-25.net, ns-286.awsdns-35.com, ns-1040.awsdns-02.org, ns-1994.awsdns-57.co.uk	2 records

✅ Authoritative Response

Server:205.251.196.16

NS records: ns-713.awsdns-25.net, ns-286.awsdns-35.com, ns-1040.awsdns-02.org, ns-1994.awsdns-57.co.uk

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for blackboardextensions.com (unsigned zone)

⏱️ Timing

Total: 932ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`20.85.72.68`
NS	4	`ns-1040.awsdns-02.org, ns-1994.awsdns-57.co.uk...`
TXT	1	`v=spf1 -all`
SOA	1	`ns-286.awsdns-35.com awsdns-hostmaster.a`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns-286.awsdns-35.com, ns-286.awsdns-35.com)

Analysis

IP Addresses

blackboardextensions.com points to a single IP address: 20.85.72.68.

Other host names such as fr-fr.help.blackboard.com, es.blackboard.com, moodlerooms.blackboard.com, bbtlceurope.com and go.blackboard.com share IPs with blackboardextensions.com.

Name Servers

blackboardextensions.com is delegated to four name servers: ns-286.awsdns-35.com, ns-713.awsdns-25.net, ns-1040.awsdns-02.org and ns-1994.awsdns-57.co.uk.

blackboardextensions.com at least partially shares name servers with other domains, for example osho.es, eggy.com.au, kmsa.org.za, d1wddd468v1z1.cloudfront.net and counterfeitarcadia.com.

Host names with two IP numbers:

ns-286.awsdns-35.com points to: 2600:9000:5301:1e00::1 and 205.251.193.30

ns-713.awsdns-25.net points to: 2600:9000:5302:c900::1 and 205.251.194.201

ns-1040.awsdns-02.org points to: 2600:9000:5304:1000::1 and 205.251.196.16

ns-1994.awsdns-57.co.uk points to: 2600:9000:5307:ca00::1 and 205.251.199.202

blackboardextensions.com - robtex.com