otstudyguide.com - robtex.com
otstudyguide.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 64.20.52.82🇺🇸 NJIIX-164.20.32.0/19 NJIIX.net 110B Meadowlands Pkwy Secaucus, NJ 07094 | ||||||
| PTR | webhosting3013.is.cc | ||||||
| NS | dns2025a.trouble-free.net ⭐ | ||||||
| A | 64.20.52.82🇺🇸 NJIIX-164.20.32.0/19 NJIIX.net 110B Meadowlands Pkwy Secaucus, NJ 07094 | ||||||
| PTR | webhosting3013.is.cc | ||||||
| NS | dns2025b.trouble-free.net | ||||||
| A | 64.20.52.83🇺🇸 NJIIX-164.20.32.0/19 NJIIX.net 110B Meadowlands Pkwy Secaucus, NJ 07094 | ||||||
| MX | otstudyguide.com ⭐ | ||||||
| A | 64.20.52.82🇺🇸 NJIIX-164.20.32.0/19 NJIIX.net 110B Meadowlands Pkwy Secaucus, NJ 07094 | ||||||
| PTR | webhosting3013.is.cc | ||||||
| TXT | v=spf1 +a +mx +ip4:64.20.52.82 include:relay.is.cc ~all | ||||||
| SOA | dns2025a.trouble-free.netjohn@interserver.net 2026-10-25 #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=1793695856 | ||||||
MX for
otstudyguide.com |
Same first word
otstudyguide.com |
Similar names
Previous names
Next names
DNS History
23 records (4 active, 19 former)
●NSdns2025a.trouble-free.net2026-08-25 → 2026-11-03 · 3 obs
○ 2017-02-15 02:31:00
● 2026-08-25 09:17:02
● 2026-11-03 08:51:38
● 2026-08-25 09:17:02
● 2026-11-03 08:51:38
●NSdns2025b.trouble-free.net2026-08-25 → 2026-11-03 · 3 obs
○ 2017-02-15 02:31:00
● 2026-08-25 09:17:02
● 2026-11-03 08:51:38
● 2026-08-25 09:17:02
● 2026-11-03 08:51:38
○NSns1.dreamhost.com2015-08-18 → 2015-12-03 · 4 obs
● 2015-08-18 09:16:24
● 2015-12-03 12:48:02
○ 2016-03-11 07:38:20
○ 2026-11-03 08:51:38
● 2015-12-03 12:48:02
○ 2016-03-11 07:38:20
○ 2026-11-03 08:51:38
○NSns1.netfirms.com2016-03-11 → 2016-07-07 · 5 obs
○ 2015-12-03 12:48:02
● 2016-03-11 07:38:20
● 2016-07-07 06:28:40
○ 2017-02-15 02:31:00
○ 2026-11-03 08:51:38
● 2016-03-11 07:38:20
● 2016-07-07 06:28:40
○ 2017-02-15 02:31:00
○ 2026-11-03 08:51:38
○NSns2.dreamhost.com2015-08-18 → 2015-12-03 · 4 obs
● 2015-08-18 09:16:24
● 2015-12-03 12:48:02
○ 2016-03-11 07:38:20
○ 2026-11-03 08:51:38
● 2015-12-03 12:48:02
○ 2016-03-11 07:38:20
○ 2026-11-03 08:51:38
○NSns2.netfirms.com2016-03-11 → 2016-07-07 · 5 obs
○ 2015-12-03 12:48:02
● 2016-03-11 07:38:20
● 2016-07-07 06:28:40
○ 2017-02-15 02:31:00
○ 2026-11-03 08:51:38
● 2016-03-11 07:38:20
● 2016-07-07 06:28:40
○ 2017-02-15 02:31:00
○ 2026-11-03 08:51:38
○NSns3.dreamhost.com2015-08-18 → 2015-12-03 · 4 obs
● 2015-08-18 09:16:24
● 2015-12-03 12:48:02
○ 2016-03-11 07:38:20
○ 2026-11-03 08:51:38
● 2015-12-03 12:48:02
○ 2016-03-11 07:38:20
○ 2026-11-03 08:51:38
○NSusw1a1.tunedhosting.com2017-02-15 → 2017-02-15 · 4 obs
○ 2016-07-07 06:28:40
● 2017-02-15 02:31:00
○ 2026-08-25 09:17:02
○ 2026-11-03 08:51:38
● 2017-02-15 02:31:00
○ 2026-08-25 09:17:02
○ 2026-11-03 08:51:38
○NSusw1a2.tunedhosting.com2017-02-15 → 2017-02-15 · 4 obs
○ 2016-07-07 06:28:40
● 2017-02-15 02:31:00
○ 2026-08-25 09:17:02
○ 2026-11-03 08:51:38
● 2017-02-15 02:31:00
○ 2026-08-25 09:17:02
○ 2026-11-03 08:51:38
○NSusw1a3.tunedhosting.com2017-02-15 → 2017-02-15 · 4 obs
○ 2016-07-07 06:28:40
● 2017-02-15 02:31:00
○ 2026-08-25 09:17:02
○ 2026-11-03 08:51:38
● 2017-02-15 02:31:00
○ 2026-08-25 09:17:02
○ 2026-11-03 08:51:38
○MXalt1.aspmx.l.google.com2015-08-18 → 2015-12-03 · 4 obs
● 2015-08-18 09:16:24
● 2015-12-03 12:48:02
○ 2016-03-11 07:38:20
○ 2026-11-03 08:51:38
● 2015-12-03 12:48:02
○ 2016-03-11 07:38:20
○ 2026-11-03 08:51:38
○MXalt2.aspmx.l.google.com2015-08-18 → 2015-12-03 · 4 obs
● 2015-08-18 09:16:24
● 2015-12-03 12:48:02
○ 2016-03-11 07:38:20
○ 2026-11-03 08:51:38
● 2015-12-03 12:48:02
○ 2016-03-11 07:38:20
○ 2026-11-03 08:51:38
○MXaspmx.l.google.com2015-08-18 → 2015-12-03 · 4 obs
● 2015-08-18 09:16:24
● 2015-12-03 12:48:02
○ 2016-03-11 07:38:20
○ 2026-11-03 08:51:38
● 2015-12-03 12:48:02
○ 2016-03-11 07:38:20
○ 2026-11-03 08:51:38
○MXaspmx2.googlemail.com2015-08-18 → 2015-12-03 · 4 obs
● 2015-08-18 09:16:24
● 2015-12-03 12:48:02
○ 2016-03-11 07:38:20
○ 2026-11-03 08:51:38
● 2015-12-03 12:48:02
○ 2016-03-11 07:38:20
○ 2026-11-03 08:51:38
○MXaspmx3.googlemail.com2015-08-18 → 2015-12-03 · 4 obs
● 2015-08-18 09:16:24
● 2015-12-03 12:48:02
○ 2016-03-11 07:38:20
○ 2026-11-03 08:51:38
● 2015-12-03 12:48:02
○ 2016-03-11 07:38:20
○ 2026-11-03 08:51:38
○MXaspmx4.googlemail.com2015-08-18 → 2015-12-03 · 4 obs
● 2015-08-18 09:16:24
● 2015-12-03 12:48:02
○ 2016-03-11 07:38:20
○ 2026-11-03 08:51:38
● 2015-12-03 12:48:02
○ 2016-03-11 07:38:20
○ 2026-11-03 08:51:38
○MXaspmx5.googlemail.com2015-08-18 → 2015-12-03 · 4 obs
● 2015-08-18 09:16:24
● 2015-12-03 12:48:02
○ 2016-03-11 07:38:20
○ 2026-11-03 08:51:38
● 2015-12-03 12:48:02
○ 2016-03-11 07:38:20
○ 2026-11-03 08:51:38
○MXmx.otstudyguide.com2016-03-11 → 2016-07-07 · 5 obs
○ 2015-12-03 12:48:02
● 2016-03-11 07:38:20
● 2016-07-07 06:28:40
○ 2017-02-15 02:31:00
○ 2026-11-03 08:51:38
● 2016-03-11 07:38:20
● 2016-07-07 06:28:40
○ 2017-02-15 02:31:00
○ 2026-11-03 08:51:38
●MXotstudyguide.com2017-02-15 → 2026-11-03 · 3 obs
○ 2016-07-07 06:28:40
● 2017-02-15 02:31:00
● 2026-11-03 08:51:38
● 2017-02-15 02:31:00
● 2026-11-03 08:51:38
○A104.198.98.462017-02-15 → 2017-02-15 · 4 obs
○ 2016-07-07 06:28:40
● 2017-02-15 02:31:00
○ 2026-08-25 09:17:02
○ 2026-11-03 08:51:38
● 2017-02-15 02:31:00
○ 2026-08-25 09:17:02
○ 2026-11-03 08:51:38
●A64.20.52.822026-08-25 → 2026-11-03 · 3 obs
○ 2017-02-15 02:31:00
● 2026-08-25 09:17:02
● 2026-11-03 08:51:38
● 2026-08-25 09:17:02
● 2026-11-03 08:51:38
○A66.96.149.162016-03-11 → 2016-07-07 · 5 obs
○ 2015-12-03 12:48:02
● 2016-03-11 07:38:20
● 2016-07-07 06:28:40
○ 2017-02-15 02:31:00
○ 2026-11-03 08:51:38
● 2016-03-11 07:38:20
● 2016-07-07 06:28:40
○ 2017-02-15 02:31:00
○ 2026-11-03 08:51:38
○A69.163.144.1882015-08-18 → 2015-12-03 · 4 obs
● 2015-08-18 09:16:24
● 2015-12-03 12:48:02
○ 2016-03-11 07:38:20
○ 2026-11-03 08:51:38
● 2015-12-03 12:48:02
○ 2016-03-11 07:38:20
○ 2026-11-03 08:51:38
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | i.gtld-servers.net, k.gtld-servers.net, j.gtld-servers.net, b.gtld-servers.net... | - |
| otstudyguide.com | dns2025a.trouble-free.net, dns2025b.trouble-free.net | - |
✅ Authoritative Response
Server:64.20.52.83
NS records: dns2025a.trouble-free.net, dns2025b.trouble-free.net
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for otstudyguide.com (unsigned zone)
⏱️ Timing
Total: 1560ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 64.20.52.82 |
| NS | 2 | dns2025a.trouble-free.net, dns2025b.trouble-free.net |
| MX | 1 | otstudyguide.com (pri: 0) |
| TXT | 1 | v=spf1 +a +mx +ip4:64.20.52.82 include:r |
| SOA | 1 | dns2025a.trouble-free.net john.interserv |
Analysis
Mail Server Role
otstudyguide.com serves as a mail server for otstudyguide.com.
IP Addresses
otstudyguide.com has exactly one IP address — 64.20.52.82.
commercelead.com, webhosting2025.is.cc, pureroad.ae plus two other host names have IP numbers in common with otstudyguide.com.
Name Servers
Two name servers handle the delegation for otstudyguide.com: dns2025a.trouble-free.net and dns2025b.trouble-free.net.
The name server configuration of otstudyguide.com is shared with other domains, for instance levandomedia.com, kancelariaslomscy.pl, thcbulkshopeu.com and two others.
Some name servers delegated to otstudyguide.com are also used by other domains, notably iqidi.com.mx and shigoto.blog.
dns2025a.trouble-free.net → 64.20.52.82 and dns2025b.trouble-free.net → 64.20.52.83: one IP number per host name.
Mail Servers
otstudyguide.com uses exactly one mail server, which is otstudyguide.com.
otstudyguide.com carries a single IP number, which is 64.20.52.82.