openstudy.org - dns.ninja
openstudy.org
| DNSSEC | ⚠️ Not signed | ||||||
| A | 13.248.169.48🇺🇸 Amazon13.248.160.0/20 | ||||||
| PTR | a904c694c05102f30.awsglobalaccelerator.com | ||||||
| A | 76.223.54.146🇺🇸 Amazon76.223.48.0/20 | ||||||
| NS | ns1.dan.com ⭐ | ||||||
| A | 2603:5:2125::43🇺🇸 GODADDY-DNS2603:5:2120::/44 | ||||||
| PTR | ns1.dan.com | ||||||
| A | 97.74.98.67🇺🇸 GODADDY-DNS97.74.98.0/23 | ||||||
| PTR | ns1.dan.com | ||||||
| NS | ns2.dan.com | ||||||
| A | 2603:5:2225::43🇺🇸 GODADDY-DNS2603:5:2220::/44 | ||||||
| PTR | ns2.dan.com | ||||||
| A | 173.201.66.67🇺🇸 GODADDY-DNS173.201.66.0/23 | ||||||
| PTR | ns2.dan.com | ||||||
| SOA | ns1.dan.comdns@jomax.net 2025-10-01 #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.infohostmaster@donuts.email serial=1783724959 | ||||||
Subdomains
mail.openstudy.org |
Same first word
Similar names
DNS History
11 records (4 active, 7 former)
○NSdns101.ovh.net2016-12-22 → 2016-12-22 · 4 obs
● 2016-12-22 17:34:00
○ 2026-02-24 12:24:16
○ 2026-07-10 23:44:28
○NSns.supremeservers.co.uk2015-06-22 → 2016-04-23 · 4 obs
● 2016-04-23 17:35:06
○ 2016-12-22 17:34:00
○ 2026-07-10 23:44:28
●NSns1.dan.com2026-02-24 → 2026-07-10 · 3 obs
● 2026-02-24 12:24:16
● 2026-07-10 23:44:28
○NSns101.ovh.net2016-12-22 → 2016-12-22 · 4 obs
● 2016-12-22 17:34:00
○ 2026-02-24 12:24:16
○ 2026-07-10 23:44:28
●NSns2.dan.com2026-02-24 → 2026-07-10 · 3 obs
● 2026-02-24 12:24:16
● 2026-07-10 23:44:28
○NSns2.supremeservers.co.uk2015-06-22 → 2016-04-23 · 4 obs
● 2016-04-23 17:35:06
○ 2016-12-22 17:34:00
○ 2026-07-10 23:44:28
○MXopenstudy-org.mail.protection.outlook.com2015-06-22 → 2016-12-22 · 4 obs
● 2016-12-22 17:34:00
○ 2026-02-24 12:24:16
○ 2026-07-10 23:44:28
●A13.248.169.482026-02-24 → 2026-07-10 · 3 obs
● 2026-02-24 12:24:16
● 2026-07-10 23:44:28
○A188.165.220.112016-12-22 → 2016-12-22 · 4 obs
● 2016-12-22 17:34:00
○ 2026-02-24 12:24:16
○ 2026-07-10 23:44:28
●A76.223.54.1462026-02-24 → 2026-07-10 · 3 obs
● 2026-02-24 12:24:16
● 2026-07-10 23:44:28
○A91.215.184.2462015-06-22 → 2016-04-23 · 4 obs
● 2016-04-23 17:35:06
○ 2016-12-22 17:34:00
○ 2026-07-10 23:44:28
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| org | b2.org.afilias-nst.org, d0.org.afilias-nst.org, b0.org.afilias-nst.org | - |
| openstudy.org | ns2.dan.com, ns1.dan.com | - |
✅ Authoritative Response
Server:173.201.66.67
NS records: ns2.dan.com, ns1.dan.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for openstudy.org (unsigned zone)
⏱️ Timing
Total: 525ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 13.248.169.48, 76.223.54.146 |
| NS | 2 | ns1.dan.com, ns2.dan.com |
| SOA | 1 | ns1.dan.com dns.jomax.net |
Analysis
Hierarchy
mail.openstudy.org is a subdomain of openstudy.org.
IP Addresses
openstudy.org points to the IP addresses 13.248.169.48 and 76.223.54.146
accuring.com, hostmaster.sellcheap.com, computing2012.com plus two other host names have IP numbers in common with openstudy.org.
Name Servers
The NS records for openstudy.org delegate to ns1.dan.com and ns2.dan.com.
The name server configuration of openstudy.org is shared with other domains, for instance goodcleanup.com, onlinekarta.com, hostels.ng and two others.
The name servers of openstudy.org overlap at least partially with those of other domains — among them htmlgame.com, holographic.tv, theauction.net and two more.
These name servers commonly appear alongside the name servers ns1.undeveloped.com and ns2.undeveloped.com.
ns1.dan.com resolves to 97.74.98.67 and 2603:5:2125::43. Likewise, ns2.dan.com resolves to 173.201.66.67 and 2603:5:2225::43 — two IP addresses apiece.