instructors.pl - dns.ninja
instructors.pl
| DNSSEC | ⚠️ Not signed | ||||||
| A | 109.95.159.77🇵🇱 DHOSTING-AS109.95.152.0/21 dhosting.pl Sp. z o.o. Network Warszawa, Poland | ||||||
| PTR | web03-s226.hosting.eu1.dhosting.com | ||||||
| NS | ns1.dhosting.pl ⭐ | ||||||
| A | 195.88.50.140🇵🇱 DHOSTING-AS195.88.50.0/23 dhosting.pl Sp. z o.o. Network Warszawa, Poland | ||||||
| PTR | ns1.dhosting.pl | ||||||
| NS | ns2.dhosting.pl | ||||||
| A | 109.95.154.140🇵🇱 DHOSTING-AS109.95.152.0/21 dhosting.pl Sp. z o.o. Network Warszawa, Poland | ||||||
| PTR | ns2.dhosting.pl | ||||||
| MX | mx-1.dpoczta.pl ⭐ | ||||||
| A | 109.95.154.150🇵🇱 DHOSTING-AS109.95.152.0/21 dhosting.pl Sp. z o.o. Network Warszawa, Poland | ||||||
| PTR | mx-1.dpoczta.pl | ||||||
| MX | mx-2.dpoczta.pl ⭐ | ||||||
| A | 109.95.154.151🇵🇱 DHOSTING-AS109.95.152.0/21 dhosting.pl Sp. z o.o. Network Warszawa, Poland | ||||||
| PTR | mx-2.dpoczta.pl | ||||||
| TXT | v=spf1 include:_mail.dhosting.pl -all | ||||||
| SOA | ns1.dhosting.plroot@instructors.pl 2025-09-27 #4 | ||||||
pl
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a-dns.pl ⭐ | ||||||
| NS | b-dns.pl | ||||||
| NS | d-dns.pl | ||||||
| NS | f-dns.pl | ||||||
| NS | h-dns.pl | ||||||
| NS | j-dns.pl | ||||||
| TXT | ccTLD of Poland | ||||||
| SOA | a-dns.pldnsmaster@nask.pl serial=1786948245 | ||||||
Subdomains
mail.instructors.pl |
Same first word
Similar names
DNS History
10 records (5 active, 5 former)
●NSns1.dhosting.pl2026-03-07 → 2026-08-17 · 3 obs
● 2026-03-07 12:43:54
● 2026-08-17 08:57:04
○NSns1.hekko.net.pl2016-04-23 → 2016-05-25 · 4 obs
● 2016-05-25 03:48:34
○ 2017-02-04 22:30:18
○ 2026-08-17 08:57:04
●NSns2.dhosting.pl2026-03-07 → 2026-08-17 · 3 obs
● 2026-03-07 12:43:54
● 2026-08-17 08:57:04
○NSns2.hekko.net.pl2016-04-23 → 2016-05-25 · 4 obs
● 2016-05-25 03:48:34
○ 2017-02-04 22:30:18
○ 2026-08-17 08:57:04
○MXmail.instructors.pl2016-04-23 → 2016-05-25 · 4 obs
● 2016-05-25 03:48:34
○ 2017-02-04 22:30:18
○ 2026-08-17 08:57:04
●MXmx-1.dpoczta.pl2026-03-07 → 2026-08-17 · 8 obs
● 2026-03-07 12:43:54
○ 2026-03-09 00:57:00
● 2026-03-11 16:21:28
● 2026-04-04 06:00:46
○ 2026-04-04 07:07:14
● 2026-04-05 08:06:18
● 2026-08-17 08:57:04
●MXmx-2.dpoczta.pl2026-03-07 → 2026-08-17 · 8 obs
● 2026-03-07 12:43:54
○ 2026-03-09 00:57:00
● 2026-03-11 16:21:28
● 2026-04-04 06:00:46
○ 2026-04-04 07:07:14
● 2026-04-05 08:06:18
● 2026-08-17 08:57:04
●A109.95.159.772026-03-07 → 2026-08-17 · 8 obs
● 2026-03-07 12:43:54
○ 2026-03-09 00:57:00
● 2026-03-11 16:21:28
● 2026-04-04 06:00:46
○ 2026-04-04 07:07:14
● 2026-04-05 08:06:18
● 2026-08-17 08:57:04
○A188.116.16.972016-05-25 → 2016-05-25 · 4 obs
● 2016-05-25 03:48:34
○ 2017-02-04 22:30:18
○ 2026-08-17 08:57:04
○A188.116.9.2132016-04-23 → 2016-04-23 · 3 obs
○ 2016-05-25 03:48:34
○ 2026-08-17 08:57:04
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| pl | f-dns.pl, b-dns.pl, j-dns.pl, h-dns.pl... | - |
| instructors.pl | ns2.dhosting.pl, ns1.dhosting.pl | 2 records |
✅ Authoritative Response
Server:109.95.154.140
NS records: ns2.dhosting.pl, ns1.dhosting.pl
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for instructors.pl (unsigned zone)
⏱️ Timing
Total: 498ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 109.95.159.77 |
| NS | 2 | ns1.dhosting.pl, ns2.dhosting.pl |
| MX | 2 | mx-1.dpoczta.pl (pri: 10), mx-2.dpoczta.pl (pri: 10) |
| TXT | 1 | v=spf1 include:_mail.dhosting.pl -all |
| SOA | 1 | ns1.dhosting.pl root.instructors.pl |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (ns2.dhosting.pl, ns1.dhosting.pl)
Analysis
Hierarchy
instructors.pl is the parent zone for mail.instructors.pl.
IP Addresses
instructors.pl has exactly one IP address — 109.95.159.77.
sumaservice.pl, polanka.net, budownictwo.com.pl plus two other host names have IP numbers in common with instructors.pl.
Name Servers
DNS delegation for instructors.pl points to two name servers: ns1.dhosting.pl and ns2.dhosting.pl.
The name server configuration of instructors.pl is shared with other domains, for instance mateuszjaniec.pl, kozakdruk.pl, entivastudio.pl and two others.
instructors.pl partially shares its name servers with domains like 158.95.109.in-addr.arpa and usa1.dhosting.com.
ns1.dhosting.pl resolves to 195.88.50.140. ns2.dhosting.pl resolves to 109.95.154.140. Both host names point to a single IP number.
Mail Servers
instructors.pl uses two mail servers, mx-1.dpoczta.pl and mx-2.dpoczta.pl.
The mail server setup of instructors.pl matches that of other domains such as geodigital.pl, maredo.pl, vlink.pl and two others.
mx-1.dpoczta.pl resolves to 109.95.154.150. mx-2.dpoczta.pl resolves to 109.95.154.151. Both host names point to a single IP number.