chemskillbuilder.com - dns.ninja
chemskillbuilder.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 192.243.92.2 | ||||||
| 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 2014-08-02 #10 | ||||||
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=1783210741 | ||||||
Subdomains
www.chemskillbuilder.com |
Same first word
chemskillbuilder.com |
DNS History
6 records (6 active, 0 former)
●NSpdns85.ultradns.biz2015-08-22 → 2026-07-05 · 2 obs
● 2026-07-05 00:19:40
●NSpdns85.ultradns.com2015-08-22 → 2026-07-05 · 2 obs
● 2026-07-05 00:19:40
●NSpdns85.ultradns.net2015-08-22 → 2026-07-05 · 2 obs
● 2026-07-05 00:19:40
●NSpdns85.ultradns.org2015-08-22 → 2026-07-05 · 2 obs
● 2026-07-05 00:19:40
●A192.243.92.22015-08-22 → 2026-07-05 · 2 obs
● 2026-07-05 00:19:40
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | i.gtld-servers.net, d.gtld-servers.net, g.gtld-servers.net, b.gtld-servers.net... | - |
| chemskillbuilder.com | pdns85.ultradns.net, pdns85.ultradns.com, pdns85.ultradns.biz, pdns85.ultradns.org | 2 records |
✅ Authoritative Response
Server:156.154.67.85
NS records: pdns85.ultradns.net, pdns85.ultradns.com, pdns85.ultradns.biz, pdns85.ultradns.org
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for chemskillbuilder.com (unsigned zone)
⏱️ Timing
Total: 829ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 192.243.92.2 |
| NS | 4 | pdns85.ultradns.biz, pdns85.ultradns.com... |
| MX | 1 | mail.eppg.com (pri: 5) |
| 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
Hierarchy
chemskillbuilder.com is the parent zone for www.chemskillbuilder.com.
IP Addresses
chemskillbuilder.com resolves to one IP address: 192.243.92.2.
Other host names, such as www.chemskillbuilder.com, share IP numbers with chemskillbuilder.com.
Name Servers
The authoritative name servers for chemskillbuilder.com are pdns85.ultradns.biz, pdns85.ultradns.com, pdns85.ultradns.net and pdns85.ultradns.org.
chemskillbuilder.com partially shares its NS delegation with several other domains, including connectorganicchemistry.com, engradeva.com, essentialsofnursinginformaticsstudyguide.com and two others.
pdns85.ultradns.biz, pdns85.ultradns.com, pdns85.ultradns.net and pdns85.ultradns.org each carry two IP addresses. pdns85.ultradns.biz has 156.154.66.85 and 2610:a1:1015::79; pdns85.ultradns.com has 156.154.64.85 and 2001:502:f3ff::79; pdns85.ultradns.net has 156.154.65.85 and 2610:a1:1014::79; pdns85.ultradns.org has 156.154.67.85 and 2001:502:4612::79.
Mail Servers
Mail for chemskillbuilder.com is handled by a single mail server, mail.eppg.com.
chemskillbuilder.com uses an identical mail server configuration to several other domains — among them accessmcgrawhill.com, mmbidonline.com, mcgraw-hillap.com and two more.