courseorientation.com - dns.ninja
courseorientation.com
| DNSSEC | ⚠️ Not signed | ||||||
| NS | pdns85.ultradns.com ⭐ | ||||||
| A | 2001:502:f3ff::79🇺🇸 MAINT-ID-120082001:502:f3ff::/48 Neustar | ||||||
| PTR | pdns85.ultradns.com | ||||||
| A | 156.154.64.85🇺🇸 MAINT-ID-12008156.154.64.0/24 Neustar | ||||||
| PTR | pdns85.ultradns.com | ||||||
| NS | pdns85.ultradns.biz | ||||||
| A | 2610:a1:1015::79🇺🇸 MAINT-ID-120082610:a1:1015::/48 Neustar | ||||||
| PTR | pdns85.ultradns.biz | ||||||
| A | 156.154.66.85🇺🇸 MAINT-ID-12008156.154.66.0/24 Neustar | ||||||
| PTR | pdns85.ultradns.biz | ||||||
| NS | pdns85.ultradns.net | ||||||
| A | 2610:a1:1014::79🇺🇸 MAINT-ID-120082610:a1:1014::/48 Neustar | ||||||
| PTR | pdns85.ultradns.net | ||||||
| A | 156.154.65.85🇺🇸 MAINT-ID-12008156.154.65.0/24 Neustar | ||||||
| PTR | pdns85.ultradns.net | ||||||
| NS | pdns85.ultradns.org | ||||||
| A | 2001:502:4612::79🇺🇸 MAINT-ID-120082001:502:4612::/48 Neustar | ||||||
| PTR | pdns85.ultradns.org | ||||||
| A | 156.154.67.85🇺🇸 MAINT-ID-12008156.154.67.0/24 Neustar | ||||||
| PTR | pdns85.ultradns.org | ||||||
| MX | mail.eppg.com ⭐ | ||||||
| TXT | v=spf1 mx -all | ||||||
| SOA | pdns85.ultradns.comhostmaster@mheducation.com 2009-08-05 #15 | ||||||
com
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.gtld-servers.net ⭐ | ||||||
| NS | b.gtld-servers.net | ||||||
| NS | c.gtld-servers.net | ||||||
| NS | d.gtld-servers.net | ||||||
| NS | e.gtld-servers.net | ||||||
| NS | f.gtld-servers.net | ||||||
| NS | g.gtld-servers.net | ||||||
| NS | h.gtld-servers.net | ||||||
| NS | i.gtld-servers.net | ||||||
| NS | j.gtld-servers.net | ||||||
| NS | k.gtld-servers.net | ||||||
| NS | l.gtld-servers.net | ||||||
| NS | m.gtld-servers.net | ||||||
| SOA | a.gtld-servers.netnstld@verisign-grs.com serial=1786482019 | ||||||
Same first word
courseorientation.com |
DNS History
5 records (5 active, 0 former)
●NSpdns85.ultradns.biz2015-08-14 → 2026-08-11 · 2 obs
● 2026-08-11 21:14:10
●NSpdns85.ultradns.com2015-08-14 → 2026-08-11 · 2 obs
● 2026-08-11 21:14:10
●NSpdns85.ultradns.net2015-08-14 → 2026-08-11 · 2 obs
● 2026-08-11 21:14:10
●NSpdns85.ultradns.org2015-08-14 → 2026-08-11 · 2 obs
● 2026-08-11 21:14:10
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| courseorientation.com | pdns85.ultradns.net, pdns85.ultradns.com, pdns85.ultradns.biz, pdns85.ultradns.org | 2 records |
✅ Authoritative Response
Server:156.154.65.85
NS records: pdns85.ultradns.net, pdns85.ultradns.com, pdns85.ultradns.biz, pdns85.ultradns.org
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for courseorientation.com (unsigned zone)
⏱️ Timing
Total: 693ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| NS | 4 | pdns85.ultradns.biz, pdns85.ultradns.com... |
| MX | 1 | mail.eppg.com (pri: 0) |
| TXT | 1 | v=spf1 mx -all |
| SOA | 1 | pdns85.ultradns.com hostmaster.mheducati |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (pdns85.ultradns.com, pdns85.ultradns.com)
Analysis
Name Servers
The domain courseorientation.com is delegated to these four name servers: pdns85.ultradns.biz, pdns85.ultradns.com, pdns85.ultradns.net and pdns85.ultradns.org.
courseorientation.com has at least partial name server overlap with other domains, such as sra-4kids.com, yourlearningsquare.com, mhphysicianassistants.com and two others.
pdns85.ultradns.biz, pdns85.ultradns.com, pdns85.ultradns.net and pdns85.ultradns.org all point to exactly two IP numbers each: pdns85.ultradns.biz → 156.154.66.85 and 2610:a1:1015::79; pdns85.ultradns.com → 156.154.64.85 and 2001:502:f3ff::79; pdns85.ultradns.net → 156.154.65.85 and 2610:a1:1014::79; pdns85.ultradns.org → 156.154.67.85 and 2001:502:4612::79.
Mail Servers
courseorientation.com routes its mail through a single mail server, mail.eppg.com.
courseorientation.com has the same mail server arrangement as a number of other domains, for example asia-mcgraw-hill.com.sg, accessmhtelecom.com, accesssurgery.com and two more.
courseorientation.com shares at least some of its mail servers with other domains — for example mcgraw-hill.com.au, wrightskills.com, primarysourceinvestigator.com and two more.