cod.blackboard.com - dns.ninja

`cod.blackboard.com`

CNAME	`learn.61c351afab997.use1.prod-02.core.blackboard.com`
DNSSEC	⚠️ Not signed
A	13.35.107.10^{🇺🇸 Amazon13.35.107.0/24 -Cloudfront}
		PTR	`server-13-35-107-10.phl51.r.cloudfront.net`
A	13.35.107.58^{🇺🇸 Amazon13.35.107.0/24 -Cloudfront}
A	13.35.107.67^{🇺🇸 Amazon13.35.107.0/24 -Cloudfront}
A	13.35.107.106^{🇺🇸 Amazon13.35.107.0/24 -Cloudfront}

`blackboard.com`

	DNSSEC	🔒 Signed (DS record present)
	A	20.85.72.68^{🇺🇸 Microsoft20.64.0.0/10}
	NS	`ns-719.awsdns-25.net` ⭐
	NS	`ns-1321.awsdns-37.org`
	NS	`ns-1824.awsdns-36.co.uk`
	NS	`ns-337.awsdns-42.com`
	MX	`blackboard-com.mail.protection.outlook.com` ⭐
	TXT	`MS=ms40613892`
	TXT	`anthropic-domain-verification-48rh2p=nzud9NjNPq281qzpTWE5ucyiZ`
	TXT	`atlassian-domain-verification=sL0SeJrvzBUml3o/s27o80sReunbCTKElGcidHph2tiTaZ0...`
	TXT	`ca3-48cd68e33ded47618c454c158fa7dcaf`
	TXT	`docu-45723426-bedd-41e0-a6f0-664931fc3806`
	TXT	`google-site-verification=fTocuU2OdTBoe0z0NgNx_LFAThArXIONtFHyO--shKk`
	TXT	`google-site-verification=h4SDO4a-PJNaavz2JFzCHiOqtvcVJG-r2SSOSwVnZcw`
	TXT	`mixpanel-domain-verify=92235a82-8728-4950-9851-57c4eecd4342`
	TXT	`pfXrSz+R3xXW/7frt70I2B9I5Ji3XNr+ndfiptWw0SwRIwJT1lzgMyka1en34swjl1jIwlBlvCnBB...`
	TXT	`rightscale-4938059c848a09deb829`
	TXT	`v=spf1 include:_netblocks.blackboard.com include:mh.blackboard.com include:sp...`
	TXT	`wiz-domain-verification=f2232774b0adf1fc08b8c0f3fd5cb5f261d73c37f381e65ec1d6b...`
	SOA	`ns-719.awsdns-25.net`awsdns-hostmaster@amazon.com serial=1

WOT: SAFE (90/100)
rank #7385 globally
rank #3621 in the tld
WOT: SAFE (90/100)
📈 Tranco rank: #5,782

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DNS History

2 records (1 active, 1 former)

○CNAMElearn-prod-61c351afab997-674305608.us-east-1.elb.amazonaws.com2026-03-27 → 2026-03-27 · 3 obs

● 2026-03-27 11:47:50
○ 2026-07-31 17:42:56
○ 2026-08-01 09:56:38

●CNAMElearn.61c351afab997.use1.prod-02.core.blackboard.com2026-07-31 → 2026-08-01 · 3 obs

○ 2026-03-27 11:47:50
● 2026-07-31 17:42:56
● 2026-08-01 09:56:38

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
blackboard.com	ns-719.awsdns-25.net, ns-337.awsdns-42.com, ns-1824.awsdns-36.co.uk, ns-1321.awsdns-37.org	2 records
blackboard.com	ns-1321.awsdns-37.org, ns-1824.awsdns-36.co.uk, ns-337.awsdns-42.com, ns-719.awsdns-25.net	-
blackboard.com	ns-1321.awsdns-37.org, ns-1824.awsdns-36.co.uk, ns-337.awsdns-42.com, ns-719.awsdns-25.net	-
blackboard.com	ns-1321.awsdns-37.org, ns-1824.awsdns-36.co.uk, ns-337.awsdns-42.com, ns-719.awsdns-25.net	-
blackboard.com	ns-1321.awsdns-37.org, ns-1824.awsdns-36.co.uk, ns-337.awsdns-42.com, ns-719.awsdns-25.net	-
blackboard.com	ns-1321.awsdns-37.org, ns-1824.awsdns-36.co.uk, ns-337.awsdns-42.com, ns-719.awsdns-25.net	-
blackboard.com	ns-1321.awsdns-37.org, ns-1824.awsdns-36.co.uk, ns-337.awsdns-42.com, ns-719.awsdns-25.net	-
blackboard.com	ns-1321.awsdns-37.org, ns-1824.awsdns-36.co.uk, ns-337.awsdns-42.com, ns-719.awsdns-25.net	-
blackboard.com	ns-1321.awsdns-37.org, ns-1824.awsdns-36.co.uk, ns-337.awsdns-42.com, ns-719.awsdns-25.net	-
blackboard.com	ns-1321.awsdns-37.org, ns-1824.awsdns-36.co.uk, ns-337.awsdns-42.com, ns-719.awsdns-25.net	-
blackboard.com	ns-1321.awsdns-37.org, ns-1824.awsdns-36.co.uk, ns-337.awsdns-42.com, ns-719.awsdns-25.net	-
blackboard.com	ns-1321.awsdns-37.org, ns-1824.awsdns-36.co.uk, ns-337.awsdns-42.com, ns-719.awsdns-25.net	-
blackboard.com	ns-1321.awsdns-37.org, ns-1824.awsdns-36.co.uk, ns-337.awsdns-42.com, ns-719.awsdns-25.net	-
blackboard.com	ns-1321.awsdns-37.org, ns-1824.awsdns-36.co.uk, ns-337.awsdns-42.com, ns-719.awsdns-25.net	-
blackboard.com	ns-1321.awsdns-37.org, ns-1824.awsdns-36.co.uk, ns-337.awsdns-42.com, ns-719.awsdns-25.net	-
blackboard.com	ns-1321.awsdns-37.org, ns-1824.awsdns-36.co.uk, ns-337.awsdns-42.com, ns-719.awsdns-25.net	-
blackboard.com	ns-1321.awsdns-37.org, ns-1824.awsdns-36.co.uk, ns-337.awsdns-42.com, ns-719.awsdns-25.net	-
blackboard.com	ns-1321.awsdns-37.org, ns-1824.awsdns-36.co.uk, ns-337.awsdns-42.com, ns-719.awsdns-25.net	-
blackboard.com	ns-1321.awsdns-37.org, ns-1824.awsdns-36.co.uk, ns-337.awsdns-42.com, ns-719.awsdns-25.net	-
blackboard.com	ns-1321.awsdns-37.org, ns-1824.awsdns-36.co.uk, ns-337.awsdns-42.com, ns-719.awsdns-25.net	-

✅ Authoritative Response

Server:205.251.197.41

NS records: ns-1321.awsdns-37.org, ns-1824.awsdns-36.co.uk, ns-337.awsdns-42.com, ns-719.awsdns-25.net

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 598ms | Queries: -

📄 Records

Type	Count	Sample Data
CNAME	1	`learn.61c351afab997.use1.prod-02.core.bl`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns-337.awsdns-42.com, ns-337.awsdns-42.com)

Analysis

IP Addresses

cod.blackboard.com directs to four IP numbers, which are 13.35.107.10, 13.35.107.58, 13.35.107.67 and 13.35.107.106.

peng200.com, operapg.com, tycsports.com plus two other host names have IP numbers in common with cod.blackboard.com.