`coursera-auth.org`

DNSSEC

⚠️ Not signed

`org`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a0.org.afilias-nst.info` ⭐ ⚠️ Not in parent delegation
	NS	`a2.org.afilias-nst.info` ⚠️ Not in parent delegation
	NS	`b0.org.afilias-nst.org`
	NS	`b2.org.afilias-nst.org`
	NS	`c0.org.afilias-nst.info` ⚠️ Not in parent delegation
	NS	`d0.org.afilias-nst.org`
	SOA	`a0.org.afilias-nst.info`hostmaster@donuts.email serial=1777471710

⚠️ On DNS blocklist: pro.plus, tif, ultimate

Subdomains

www.coursera-auth.org

Similar names

auto-rauscher.de

DNS History

6 records (0 active, 6 former)

○NSivan.ns.cloudflare.com2026-04-23 → 2026-04-23 · 3 obs

● 2026-04-23 01:59:14
○ 2026-04-24 17:59:10
○ 2026-04-29 14:29:22

○NSkay.ns.cloudflare.com2026-04-23 → 2026-04-23 · 3 obs

● 2026-04-23 01:59:14
○ 2026-04-24 17:59:10
○ 2026-04-29 14:29:22

○A104.21.12.252026-04-23 → 2026-04-23 · 3 obs

● 2026-04-23 01:59:14
○ 2026-04-24 17:59:10
○ 2026-04-29 14:29:22

○A172.67.151.822026-04-23 → 2026-04-23 · 3 obs

● 2026-04-23 01:59:14
○ 2026-04-24 17:59:10
○ 2026-04-29 14:29:22

○A2606:4700:3031::6815:c192026-04-23 → 2026-04-23 · 3 obs

● 2026-04-23 01:59:14
○ 2026-04-24 17:59:10
○ 2026-04-29 14:29:22

○A2606:4700:3037::ac43:97522026-04-23 → 2026-04-23 · 3 obs

● 2026-04-23 01:59:14
○ 2026-04-24 17:59:10
○ 2026-04-29 14:29:22

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
org	b2.org.afilias-nst.org, d0.org.afilias-nst.org, b0.org.afilias-nst.org	-

✅ Authoritative Response

Server:199.19.57.1

NS records: b2.org.afilias-nst.org, d0.org.afilias-nst.org, b0.org.afilias-nst.org

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 74ms | Queries: -

📄 Records

Type	Count	Sample Data

coursera-auth.org - robtex.com