prepcalc.com - dns.ninja
prepcalc.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 192.185.30.65🇺🇸 ORACLE-OCI-31898192.185.24.0/21 Google | ||||||
| PTR | 192-185-30-65.unifiedlayer.com | ||||||
| NS | ns249.websitewelcome.com ⭐ | ||||||
| A | 192.185.30.58🇺🇸 ORACLE-OCI-31898192.185.24.0/21 Google | ||||||
| PTR | ns249.websitewelcome.com | ||||||
| NS | ns250.websitewelcome.com | ||||||
| A | 192.185.30.59🇺🇸 ORACLE-OCI-31898192.185.24.0/21 Google | ||||||
| PTR | ns250.websitewelcome.com | ||||||
| MX | mail.prepcalc.com ⭐ | ||||||
| A | 192.185.30.65🇺🇸 ORACLE-OCI-31898192.185.24.0/21 Google | ||||||
| PTR | 192-185-30-65.unifiedlayer.com | ||||||
| TXT | v=spf1 a mx include:websitewelcome.com ~all | ||||||
| SOA | ns249.websitewelcome.commail@liquidboy.com 2026-06-08 #1 | ||||||
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=1784046797 | ||||||
Subdomains
mail.prepcalc.com |
Same first word
prepcalc.com |
Similar names
DNS History
9 records (4 active, 5 former)
○NSns17.domaincontrol.com2015-07-07 → 2017-03-31 · 4 obs
● 2017-03-31 05:34:00
○ 2026-03-27 07:21:34
○ 2026-07-14 16:39:14
○NSns18.domaincontrol.com2015-07-07 → 2017-03-31 · 4 obs
● 2017-03-31 05:34:00
○ 2026-03-27 07:21:34
○ 2026-07-14 16:39:14
●NSns249.websitewelcome.com2026-03-27 → 2026-07-14 · 3 obs
● 2026-03-27 07:21:34
● 2026-07-14 16:39:14
●NSns250.websitewelcome.com2026-03-27 → 2026-07-14 · 3 obs
● 2026-03-27 07:21:34
● 2026-07-14 16:39:14
●MXmail.prepcalc.com2026-03-27 → 2026-07-14 · 3 obs
● 2026-03-27 07:21:34
● 2026-07-14 16:39:14
○MXmailstore1.secureserver.net2015-07-07 → 2017-03-31 · 4 obs
● 2017-03-31 05:34:00
○ 2026-03-27 07:21:34
○ 2026-07-14 16:39:14
○MXsmtp.secureserver.net2015-07-07 → 2017-03-31 · 4 obs
● 2017-03-31 05:34:00
○ 2026-03-27 07:21:34
○ 2026-07-14 16:39:14
○A184.168.221.382015-07-07 → 2017-03-31 · 4 obs
● 2017-03-31 05:34:00
○ 2026-03-27 07:21:34
○ 2026-07-14 16:39:14
●A192.185.30.652026-03-27 → 2026-07-14 · 3 obs
● 2026-03-27 07:21:34
● 2026-07-14 16:39:14
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| prepcalc.com | ns250.websitewelcome.com, ns249.websitewelcome.com | 2 records |
✅ Authoritative Response
Server:192.185.30.58
NS records: ns250.websitewelcome.com, ns249.websitewelcome.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for prepcalc.com (unsigned zone)
⏱️ Timing
Total: 100ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 192.185.30.65 |
| NS | 2 | ns250.websitewelcome.com, ns249.websitewelcome.com |
| MX | 1 | mail.prepcalc.com (pri: 0) |
| TXT | 1 | v=spf1 a mx include:websitewelcome.com ~ |
| SOA | 1 | ns249.websitewelcome.com mail.liquidboy. |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (ns250.websitewelcome.com, ns249.websitewelcome.com)
Analysis
Hierarchy
mail.prepcalc.com is delegated beneath prepcalc.com.
IP Addresses
prepcalc.com directs to one IP number, which is 192.185.30.65.
Among the host names that share IP numbers with prepcalc.com are mail.prepcalc.com, rhody.com, caronet.net and two others.
Name Servers
The NS records for prepcalc.com delegate to ns249.websitewelcome.com and ns250.websitewelcome.com.
prepcalc.com has the same name server delegation as a number of other domains, such as byob2.com, alvainfo.com, grreetings.com and two more.
There is at least partial name server overlap between prepcalc.com and other domains — bonners.com.au, web2mil-hosting-001.com, hostingmwd.com and two more among them.
These name servers regularly appear alongside ns1.web2mil-hosting-001.com, ns2.web2mil-hosting-001.com, ns1.getonthewebnow.com and 3 other name servers in NS record sets.
ns249.websitewelcome.com → 192.185.30.58 and ns250.websitewelcome.com → 192.185.30.59: one IP number per host name.
Mail Servers
prepcalc.com routes its mail through a single mail server, mail.prepcalc.com.
mail.prepcalc.com resolves to 192.185.30.65 and no other IP number.