`blackboardintl.com`

DNSSEC	⚠️ Not signed
NS	`ns-1277.awsdns-31.org` ⭐
		A	2600:9000:5304:fd00::1^{🇺🇸 Amazon2600:9000:5304::/48 - CloudFront}
			PTR	`ns-1277.awsdns-31.org`
		A	205.251.196.253^{🇺🇸 Amazon205.251.196.0/24 prefix}
			PTR	`ns-1277.awsdns-31.org`
NS	`ns-1981.awsdns-55.co.uk`
		A	2600:9000:5307:bd00::1^{🇺🇸 Amazon2600:9000:5307::/48 - CloudFront}
			PTR	`ns-1981.awsdns-55.co.uk`
		A	205.251.199.189^{🇺🇸 Amazon205.251.199.0/24 prefix}
			PTR	`ns-1981.awsdns-55.co.uk`
NS	`ns-288.awsdns-36.com`
		A	2600:9000:5301:2000::1^{🇺🇸 Amazon2600:9000:5301::/48 - CloudFront}
			PTR	`ns-288.awsdns-36.com`
		A	205.251.193.32^{🇺🇸 Amazon205.251.193.0/24 prefix}
			PTR	`ns-288.awsdns-36.com`
NS	`ns-969.awsdns-57.net`
		A	2600:9000:5303:c900::1^{🇺🇸 Amazon2600:9000:5303::/48 - CloudFront}
			PTR	`ns-969.awsdns-57.net`
		A	205.251.195.201^{🇺🇸 Amazon205.251.195.0/24 prefix}
			PTR	`ns-969.awsdns-57.net`
TXT	`v=spf1 -all`
SOA	`ns-1277.awsdns-31.org`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=1774587847

Same first word

blackboardintl.com

DNS History

5 records (4 active, 1 former)

●NSns-1277.awsdns-31.org2026-03-27 → 2026-03-27 · 1 obs

● 2026-03-27 05:15:54

●NSns-1981.awsdns-55.co.uk2026-03-27 → 2026-03-27 · 1 obs

● 2026-03-27 05:15:54

●NSns-288.awsdns-36.com2026-03-27 → 2026-03-27 · 1 obs

● 2026-03-27 05:15:54

●NSns-969.awsdns-57.net2026-03-27 → 2026-03-27 · 1 obs

● 2026-03-27 05:15:54

○A141.8.225.312016-04-03 → 2018-06-15 · 3 obs

● 2016-04-03 22:23:20
● 2018-06-15 09:10:02
○ 2026-03-27 05:15:54

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	k.gtld-servers.net, e.gtld-servers.net, i.gtld-servers.net, b.gtld-servers.net...	-
blackboardintl.com	ns-288.awsdns-36.com, ns-969.awsdns-57.net, ns-1277.awsdns-31.org, ns-1981.awsdns-55.co.uk	1 record

✅ Authoritative Response

Server:205.251.195.201

NS records: ns-288.awsdns-36.com, ns-969.awsdns-57.net, ns-1277.awsdns-31.org, ns-1981.awsdns-55.co.uk

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for blackboardintl.com (unsigned zone)

⏱️ Timing

Total: 287ms | Queries: -

📄 Records

Type	Count	Sample Data
NS	4	`ns-1277.awsdns-31.org, ns-1981.awsdns-55.co.uk...`
TXT	1	`v=spf1 -all`
SOA	1	`ns-1277.awsdns-31.org awsdns-hostmaster.`

📌 Glue Records Collected

Total: 1

Out-of-bailiwick: 1 (ns-288.awsdns-36.com)

Analysis

Name Servers

blackboardintl.com is delegated to four name servers: ns-288.awsdns-36.com, ns-969.awsdns-57.net, ns-1277.awsdns-31.org and ns-1981.awsdns-55.co.uk.

blackboardintl.com shares name servers with other domains at least partially, for example educationdesty.com, d93uri21e1q3i.cloudfront.net, xportalia.com, seafile.de and cloudlogiclimited.com.

These name servers are commonly used with ns-460.awsdns-57.com, ns-1291.awsdns-33.org and ns-1625.awsdns-11.co.uk.

Host names with two IP numbers:

ns-288.awsdns-36.com points to: 2600:9000:5301:2000::1 and 205.251.193.32

ns-969.awsdns-57.net points to: 2600:9000:5303:c900::1 and 205.251.195.201

ns-1277.awsdns-31.org points to: 2600:9000:5304:fd00::1 and 205.251.196.253

ns-1981.awsdns-55.co.uk points to: 2600:9000:5307:bd00::1 and 205.251.199.189

blackboardintl.com - robtex.com