dercom.com.pl - dns.ninja
dercom.com.pl
| DNSSEC | ⚠️ Not signed | ||||||
| A | 81.186.225.127🇵🇱 NFB-AS81.186.224.0/20 Digital Media Technology Sp. z o.o. | ||||||
| PTR | pl-225-127.rgb365.eu | ||||||
| NS | ns13.rgb365.eu ⭐ ⚠️ Not in parent delegation | ||||||
| A | 83.143.134.250🇵🇱 NFB-AS83.143.128.0/21 Network For Business Sp. z o.o. | ||||||
| PTR | 538f86fa.as35174.net | ||||||
| NS | ns11.rgb365.eu | ||||||
| A | 83.143.131.250🇵🇱 NFB-AS83.143.128.0/21 Network For Business Sp. z o.o. | ||||||
| PTR | 538f83fa.as35174.net | ||||||
| NS | ns12.rgb365.eu | ||||||
| A | 83.143.132.250🇵🇱 NFB-AS83.143.128.0/21 Network For Business Sp. z o.o. | ||||||
| PTR | 538f84fa.as35174.net | ||||||
| MX | mail.dercom.com.pl ⭐ | ||||||
| A | 81.186.226.127🇵🇱 NFB-AS81.186.224.0/20 Digital Media Technology Sp. z o.o. | ||||||
| PTR | mail-226-127.rgb365.eu | ||||||
| TXT | v=spf1 include:_spf.rgb365.eu ~all | ||||||
| SOA | ns13.rgb365.eupiotr\@derewianko.dercom.com.pl 2026-06-29 #2 | ||||||
com.pl
| DNSSEC | ⚠️ Not signed | ||||||
| NS | a-dns.pl ⭐ ⚠️ Not in parent delegation | ||||||
| NS | b-dns.pl ⚠️ Not in parent delegation | ||||||
| NS | d-dns.pl ⚠️ Not in parent delegation | ||||||
| NS | f-dns.pl ⚠️ Not in parent delegation | ||||||
| NS | h-dns.pl ⚠️ Not in parent delegation | ||||||
| NS | j-dns.pl ⚠️ Not in parent delegation | ||||||
| SOA | a-dns.pldnsmaster@nask.pl serial=1785393192 | ||||||
Previously MX for
dercom.com.pl |
Subdomains
mail.dercom.com.pl |
Same first word
Similar names
DNS History
17 records (5 active, 12 former)
○NSdns.home.pl2021-09-13 → 2021-09-13 · 4 obs
● 2021-09-13 13:11:28
○ 2026-02-14 21:13:12
○ 2026-07-30 21:30:26
○NSdns2.home.pl2021-09-13 → 2021-09-13 · 4 obs
● 2021-09-13 13:11:28
○ 2026-02-14 21:13:12
○ 2026-07-30 21:30:26
○NSdns3.home.pl2021-09-13 → 2021-09-13 · 4 obs
● 2021-09-13 13:11:28
○ 2026-02-14 21:13:12
○ 2026-07-30 21:30:26
○NSns.mstrona.com2009-01-01 → 2017-10-02 · 4 obs
● 2017-10-02 23:38:32
○ 2021-09-13 13:11:28
○ 2026-07-30 21:30:26
○NSns.tuxnet.biz2009-01-01 → 2017-10-02 · 4 obs
● 2017-10-02 23:38:32
○ 2021-09-13 13:11:28
○ 2026-07-30 21:30:26
○NSns1.cavern.pl2009-01-01 → 2017-10-02 · 4 obs
● 2017-10-02 23:38:32
○ 2021-09-13 13:11:28
○ 2026-07-30 21:30:26
●NSns11.rgb365.eu2026-02-14 → 2026-07-30 · 3 obs
● 2026-02-14 21:13:12
● 2026-07-30 21:30:26
●NSns12.rgb365.eu2026-02-14 → 2026-07-30 · 3 obs
● 2026-02-14 21:13:12
● 2026-07-30 21:30:26
●NSns13.rgb365.eu2026-02-14 → 2026-07-30 · 3 obs
● 2026-02-14 21:13:12
● 2026-07-30 21:30:26
○MXdercom.com.pl2021-09-13 → 2021-09-13 · 4 obs
● 2021-09-13 13:11:28
○ 2026-02-14 21:13:12
○ 2026-07-30 21:30:26
○MXjasmine.cavern.pl2015-08-17 → 2017-10-02 · 5 obs
● 2015-08-17 06:07:50
● 2017-10-02 23:38:32
○ 2021-09-13 13:11:28
○ 2026-07-30 21:30:26
●MXmail.dercom.com.pl2026-02-14 → 2026-07-30 · 3 obs
● 2026-02-14 21:13:12
● 2026-07-30 21:30:26
○MXmx0.dercom.com.pl2009-01-01 → 2017-10-02 · 4 obs
● 2017-10-02 23:38:32
○ 2021-09-13 13:11:28
○ 2026-07-30 21:30:26
○A188.128.191.1992021-09-13 → 2021-09-13 · 4 obs
● 2021-09-13 13:11:28
○ 2026-02-14 21:13:12
○ 2026-07-30 21:30:26
○A188.40.144.132015-08-17 → 2017-10-02 · 5 obs
● 2015-08-17 06:07:50
● 2017-10-02 23:38:32
○ 2021-09-13 13:11:28
○ 2026-07-30 21:30:26
●A81.186.225.1272026-02-14 → 2026-07-30 · 3 obs
● 2026-02-14 21:13:12
● 2026-07-30 21:30:26
○A89.171.112.132009-01-01 → 2009-01-01 · 3 obs
○ 2015-08-17 06:07:50
○ 2026-07-30 21:30:26
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| pl | j-dns.pl, d-dns.pl, f-dns.pl, a-dns.pl... | - |
| dercom.com.pl | ns12.rgb365.eu, ns11.rgb365.eu | - |
✅ Authoritative Response
Server:83.143.131.250
NS records: ns12.rgb365.eu, ns11.rgb365.eu
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for dercom.com.pl (unsigned zone)
⏱️ Timing
Total: 801ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 81.186.225.127 |
| NS | 3 | ns12.rgb365.eu, ns11.rgb365.eu... |
| MX | 1 | mail.dercom.com.pl (pri: 10) |
| TXT | 1 | v=spf1 include:_spf.rgb365.eu ~all |
| SOA | 1 | ns13.rgb365.eu piotr\.derewianko.dercom. |
Analysis
Hierarchy
mail.dercom.com.pl is a subdomain of dercom.com.pl.
IP Addresses
dercom.com.pl resolves to one IP address: 81.186.225.127.
jankarski.org.pl, mediakoncept.pl, lublinokna.pl and two other host names share IP numbers with dercom.com.pl.
Name Servers
dercom.com.pl carries NS records delegating to ns11.rgb365.eu, ns12.rgb365.eu and ns13.rgb365.eu.
The name servers of dercom.com.pl overlap at least partially with those of other domains — among them artresidence.pl, dabs.pl, arbix.pl and two more.
ns11.rgb365.eu points to 83.143.131.250; ns12.rgb365.eu points to 83.143.132.250; ns13.rgb365.eu points to 83.143.134.250 — each hostname maps to exactly one IP address.
Mail Servers
Mail for dercom.com.pl is handled by a single mail server, mail.dercom.com.pl.
mail.dercom.com.pl carries a single IP number, which is 81.186.226.127.