`courseflow.org`

DNSSEC	⚠️ Not signed
NS	`ns1.linode.com` ⚠️ Not in zone NS records
		A	2600:14c0:6::2^{🇺🇸 Akamai2600:14c0:6::/48 Technologies}
			PTR	`c1-2.akashield.net`
		A	92.123.94.2^{🇳🇱 Akamai92.123.94.0/24 Technologies}
			PTR	`c1-2.akashield.net`
NS	`ns2.linode.com` ⚠️ Not in zone NS records
		A	2600:14c0:6::3^{🇺🇸 Akamai2600:14c0:6::/48 Technologies}
			PTR	`c1-3.akashield.net`
		A	92.123.94.3^{🇳🇱 Akamai92.123.94.0/24 Technologies}
			PTR	`c1-3.akashield.net`
NS	`ns3.linode.com` ⚠️ Not in zone NS records
		A	2600:14c0:7::3^{🇺🇸 Akamai2600:14c0:7::/48 Technologies}
			PTR	`c2-3.akashield.net`
		A	92.123.95.3^{🇳🇱 Akamai92.123.95.0/24 Technologies}
			PTR	`c2-3.akashield.net`
NS	`ns4.linode.com` ⚠️ Not in zone NS records
		A	2600:14c0:7::4^{🇺🇸 Akamai2600:14c0:7::/48 Technologies}
			PTR	`c2-4.akashield.net`
		A	92.123.95.4^{🇳🇱 Akamai92.123.95.0/24 Technologies}
			PTR	`c2-4.akashield.net`
NS	`ns5.linode.com` ⚠️ Not in zone NS records
		A	2600:14c0:7::2^{🇺🇸 Akamai2600:14c0:7::/48 Technologies}
			PTR	`c2-2.akashield.net`
		A	92.123.95.2^{🇳🇱 Akamai92.123.95.0/24 Technologies}
			PTR	`c2-2.akashield.net`

`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=1777314087

Same first word

courseflow.com

courseflow.net

courseflow.org

Similar names

sourceflow.de

flowcourse.com

sourceflow.ch

sourceflow.co

sourcewolf.com

sourceflow.co.uk

wolfsource.org

sourceflow.us

sourceflow.com

flowsource.co.uk

flowsource.com

wolfsource.com

wolfcourse.com

DNS History

6 records (5 active, 1 former)

●NSns1.linode.com2026-02-18 → 2026-04-27 · 2 obs

● 2026-02-18 00:32:14
● 2026-04-27 18:48:20

●NSns2.linode.com2026-02-18 → 2026-04-27 · 2 obs

● 2026-02-18 00:32:14
● 2026-04-27 18:48:20

●NSns3.linode.com2026-02-18 → 2026-04-27 · 2 obs

● 2026-02-18 00:32:14
● 2026-04-27 18:48:20

●NSns4.linode.com2026-02-18 → 2026-04-27 · 2 obs

● 2026-02-18 00:32:14
● 2026-04-27 18:48:20

●NSns5.linode.com2026-02-18 → 2026-04-27 · 2 obs

● 2026-02-18 00:32:14
● 2026-04-27 18:48:20

○A64.227.119.612026-02-18 → 2026-02-18 · 3 obs

● 2026-02-18 00:32:14
○ 2026-03-16 17:56:48
○ 2026-04-27 18:48:20

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
org	b2.org.afilias-nst.org, d0.org.afilias-nst.org, b0.org.afilias-nst.org	-
courseflow.org	ns2.linode.com, ns5.linode.com, ns3.linode.com, ns1.linode.com...	-

✅ Authoritative Response

Server:92.123.95.4

NS records: ns2.linode.com, ns5.linode.com, ns3.linode.com, ns1.linode.com, ns4.linode.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for courseflow.org (unsigned zone)

⏱️ Timing

Total: 886ms | Queries: -

📄 Records

Type	Count	Sample Data

Analysis

Name Servers

courseflow.org delegates to five name servers: ns1.linode.com, ns2.linode.com, ns3.linode.com, ns4.linode.com and ns5.linode.com.

courseflow.org at least partially shares name servers with other domains such as fsgroup.eu, xibcc.com, jonnou.net, restopoint.com and betoncombat.com.