openlearner.org - dns.ninja

`openlearner.org`

DNSSEC	⚠️ Not signed
A	157.245.87.23^{🇺🇸 DIGITALOCEAN157.245.80.0/20 DigitalOcean}
		PTR	`www.deftly.us`
NS	`ns1.digitalocean.com` ⭐
		A	2606:4700:52::ac40:34d2^{🇺🇸 Cloudflare2606:4700:52::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ns1.digitalocean.com`
		A	172.64.52.210^{🇺🇸 Cloudflare172.64.52.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ns1.digitalocean.com`
NS	`ns2.digitalocean.com`
		A	2606:4700:5a::ac40:3515^{🇺🇸 Cloudflare2606:4700:5a::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ns2.digitalocean.com`
		A	172.64.53.21^{🇺🇸 Cloudflare172.64.53.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ns2.digitalocean.com`
NS	`ns3.digitalocean.com`
		A	2606:4700:52::ac40:31d1^{🇺🇸 Cloudflare2606:4700:52::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ns3.digitalocean.com`
		A	172.64.49.209^{🇺🇸 Cloudflare172.64.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ns3.digitalocean.com`
MX	`mail.openlearner.org` ⭐
		A	204.48.16.209^{🇺🇸 DIGITALOCEAN204.48.16.0/20 DigitalOcean}
			PTR	`mail.openlearner.org-1711393895394-s-2vcpu-4gb-nyc1`
TXT	`v=spf1 mx -all`
SOA	`ns1.digitalocean.com`hostmaster@openlearner.org serial=0

`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=1784164703

Subdomains

mail.openlearner.org

Same first word

openlearner.org

DNS History

10 records (5 active, 5 former)

●NSns1.digitalocean.com2026-06-23 → 2026-07-16 · 3 obs

○ 2017-03-23 19:15:28
● 2026-06-23 04:29:46
● 2026-07-16 01:31:50

●NSns2.digitalocean.com2026-06-23 → 2026-07-16 · 3 obs

○ 2017-03-23 19:15:28
● 2026-06-23 04:29:46
● 2026-07-16 01:31:50

●NSns3.digitalocean.com2026-06-23 → 2026-07-16 · 3 obs

○ 2017-03-23 19:15:28
● 2026-06-23 04:29:46
● 2026-07-16 01:31:50

○NSns35.domaincontrol.com2015-12-01 → 2017-03-23 · 4 obs

● 2015-12-01 20:03:54
● 2017-03-23 19:15:28
○ 2026-06-23 04:29:46
○ 2026-07-16 01:31:50

○NSns36.domaincontrol.com2015-12-01 → 2017-03-23 · 4 obs

● 2015-12-01 20:03:54
● 2017-03-23 19:15:28
○ 2026-06-23 04:29:46
○ 2026-07-16 01:31:50

●MXmail.openlearner.org2026-06-23 → 2026-07-16 · 3 obs

○ 2017-03-23 19:15:28
● 2026-06-23 04:29:46
● 2026-07-16 01:31:50

○MXmailstore1.secureserver.net2015-12-01 → 2017-03-23 · 4 obs

● 2015-12-01 20:03:54
● 2017-03-23 19:15:28
○ 2026-06-23 04:29:46
○ 2026-07-16 01:31:50

○MXsmtp.secureserver.net2015-12-01 → 2017-03-23 · 4 obs

● 2015-12-01 20:03:54
● 2017-03-23 19:15:28
○ 2026-06-23 04:29:46
○ 2026-07-16 01:31:50

●A157.245.87.232026-06-23 → 2026-07-16 · 3 obs

○ 2017-03-23 19:15:28
● 2026-06-23 04:29:46
● 2026-07-16 01:31:50

○A50.63.202.412015-12-01 → 2017-03-23 · 4 obs

● 2015-12-01 20:03:54
● 2017-03-23 19:15:28
○ 2026-06-23 04:29:46
○ 2026-07-16 01:31:50

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
org	b0.org.afilias-nst.org, b2.org.afilias-nst.org, d0.org.afilias-nst.org	-
openlearner.org	ns1.digitalocean.com, ns2.digitalocean.com, ns3.digitalocean.com	-

✅ Authoritative Response

Server:172.64.49.209

NS records: ns1.digitalocean.com, ns2.digitalocean.com, ns3.digitalocean.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for openlearner.org (unsigned zone)

⏱️ Timing

Total: 494ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`157.245.87.23`
NS	3	`ns1.digitalocean.com, ns3.digitalocean.com...`
MX	1	`mail.openlearner.org (pri: 10)`
TXT	1	`v=spf1 mx -all`
SOA	1	`ns1.digitalocean.com hostmaster.openlear`

Analysis

Hierarchy

openlearner.org is the parent zone for mail.openlearner.org.

IP Addresses

openlearner.org resolves to just one IP address, 157.245.87.23.

Other host names share IP numbers with openlearner.org; deftly.us is one such example.

Name Servers

Three name servers are authoritative for openlearner.org: ns1.digitalocean.com, ns2.digitalocean.com and ns3.digitalocean.com.

openlearner.org partially shares its NS delegation with several other domains, including handdepump.com, 102.93.142.in-addr.arpa, patrimoniomedellin.gov.co and two others.

ns1.digitalocean.com resolves to 172.64.52.210 and 2606:4700:52::ac40:34d2. ns2.digitalocean.com resolves to 172.64.53.21 and 2606:4700:5a::ac40:3515. ns3.digitalocean.com resolves to 172.64.49.209 and 2606:4700:52::ac40:31d1. All three hostnames point to two IP numbers each.

Mail Servers

The sole mail server for openlearner.org is mail.openlearner.org.

The mail server configuration of openlearner.org is identical to that of other domains, for example mail.openlearner.org and deftly.us.

There is one IP number for mail.openlearner.org: 204.48.16.209.