certprep.com - robtex.com
certprep.com
| DNSSEC | ⚠️ Not signed | ||||||
| NS | ns1.pearson.com ⚠️ Not in zone NS records | ||||||
| A | 168.146.112.10🇺🇸 PEARSON-NA168.146.112.0/24 NCS Pearson Inc. | ||||||
| PTR | ns1.pearson.com | ||||||
| NS | ns2.pearson.com ⚠️ Not in zone NS records | ||||||
| A | 168.146.112.11🇺🇸 PEARSON-NA168.146.112.0/24 NCS Pearson Inc. | ||||||
| PTR | ns2.pearson.com | ||||||
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=1786893369 | ||||||
Same first word
DNS History
11 records (2 active, 9 former)
○NSbuy.internettraffic.com2015-08-24 → 2016-07-21 · 5 obs
● 2015-08-24 22:53:32
● 2016-07-21 01:18:24
○ 2016-09-05 05:34:26
○ 2026-08-16 15:45:28
●NSns1.pearson.com2026-06-25 → 2026-08-16 · 3 obs
● 2026-06-25 17:31:14
● 2026-08-16 15:45:28
○NSns1.uniregistrymarket.link2016-09-05 → 2017-08-23 · 5 obs
● 2016-09-05 05:34:26
● 2017-08-23 04:33:50
○ 2026-06-25 17:31:14
○ 2026-08-16 15:45:28
●NSns2.pearson.com2026-06-25 → 2026-08-16 · 3 obs
● 2026-06-25 17:31:14
● 2026-08-16 15:45:28
○NSns2.uniregistrymarket.link2016-09-05 → 2017-08-23 · 5 obs
● 2016-09-05 05:34:26
● 2017-08-23 04:33:50
○ 2026-06-25 17:31:14
○ 2026-08-16 15:45:28
○NSns23.worldnic.com2008-03-13 → 2008-03-13 · 3 obs
○ 2015-08-24 22:53:32
○ 2026-08-16 15:45:28
○NSns24.worldnic.com2008-03-13 → 2008-03-13 · 3 obs
○ 2015-08-24 22:53:32
○ 2026-08-16 15:45:28
○NSsell.internettraffic.com2015-08-24 → 2016-07-21 · 5 obs
● 2015-08-24 22:53:32
● 2016-07-21 01:18:24
○ 2016-09-05 05:34:26
○ 2026-08-16 15:45:28
○MXteresmajor.networking.net2008-03-13 → 2008-03-13 · 3 obs
○ 2015-08-24 22:53:32
○ 2026-08-16 15:45:28
○A69.172.201.1532016-04-16 → 2017-08-23 · 5 obs
● 2016-04-16 20:31:42
● 2017-08-23 04:33:50
○ 2026-06-25 17:31:14
○ 2026-08-16 15:45:28
○A69.172.201.2082015-08-24 → 2016-01-11 · 5 obs
● 2015-08-24 22:53:32
● 2016-01-11 01:13:20
○ 2016-04-16 20:31:42
○ 2026-08-16 15:45:28
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| certprep.com | ns2.pearson.com, ns1.pearson.com | 2 records |
✅ Authoritative Response
Server:168.146.112.11
NS records: ns2.pearson.com, ns1.pearson.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for certprep.com (unsigned zone)
⏱️ Timing
Total: 173ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (ns2.pearson.com, ns1.pearson.com)
Analysis
Name Servers
The NS records for certprep.com delegate to ns1.pearson.com and ns2.pearson.com.
certprep.com has the same name server delegation as a number of other domains, such as pearson-university.net, e-college.net, pearsondigitally.com and two more.
There is at least partial name server overlap between certprep.com and other domains — talent-assessment.com, michiganconnectionsacademy.com, wrdsbelearn.ca and two more among them.
The name servers dns-amer-2.ptns.pearson.com, dns-apac-1.ptns.pearson.com and dns-emea-1.ptns.pearson.com are often found in combination with these name servers.
ns1.pearson.com → 168.146.112.10 and ns2.pearson.com → 168.146.112.11: one IP number per host name.