onlinelearning.com - dns.ninja
onlinelearning.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 192.243.91.135🇺🇸 Amazon192.243.91.0/24 McGraw-Hill Education | ||||||
| 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 | ||||||
| TXT | v=spf1 mx -all | ||||||
| SOA | pdns85.ultradns.comhostmaster@mheducation.com 2014-12-04 #14 | ||||||
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=1785250307 | ||||||
Same first word
Similar names
DNS History
5 records (5 active, 0 former)
●NSpdns85.ultradns.biz2015-08-02 → 2026-07-28 · 2 obs
● 2026-07-28 15:10:32
●NSpdns85.ultradns.com2015-08-02 → 2026-07-28 · 2 obs
● 2026-07-28 15:10:32
●NSpdns85.ultradns.net2015-08-02 → 2026-07-28 · 2 obs
● 2026-07-28 15:10:32
●NSpdns85.ultradns.org2015-08-02 → 2026-07-28 · 2 obs
● 2026-07-28 15:10:32
●A192.243.91.1352015-08-02 → 2026-07-28 · 2 obs
● 2026-07-28 15:10:32
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | h.gtld-servers.net, g.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net... | - |
| onlinelearning.com | pdns85.ultradns.net, pdns85.ultradns.com, pdns85.ultradns.biz, pdns85.ultradns.org | 2 records |
✅ Authoritative Response
Server:156.154.66.85
NS records: pdns85.ultradns.net, pdns85.ultradns.com, pdns85.ultradns.biz, pdns85.ultradns.org
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for onlinelearning.com (unsigned zone)
⏱️ Timing
Total: 512ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 192.243.91.135 |
| NS | 4 | pdns85.ultradns.biz, pdns85.ultradns.com... |
| 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
IP Addresses
onlinelearning.com directs to one IP number, which is 192.243.91.135.
Name Servers
The domain onlinelearning.com is delegated to these four name servers: pdns85.ultradns.biz, pdns85.ultradns.com, pdns85.ultradns.net and pdns85.ultradns.org.
onlinelearning.com shares at least some of its name servers with other domains, including mcgrawhill.com, mcconnellbriefmacro1e.com, successingeology.com and two others.
These name servers are frequently seen alongside the name servers corp-hts-ns1.mcgraw-hill.com.
The host names pdns85.ultradns.biz, pdns85.ultradns.com, pdns85.ultradns.net and pdns85.ultradns.org each resolve to two IP addresses: pdns85.ultradns.biz resolves to 156.154.66.85 and 2610:a1:1015::79; pdns85.ultradns.com resolves to 156.154.64.85 and 2001:502:f3ff::79; pdns85.ultradns.net resolves to 156.154.65.85 and 2610:a1:1014::79; pdns85.ultradns.org resolves to 156.154.67.85 and 2001:502:4612::79.