extima.eu - dns.ninja
extima.eu
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| A | 81.91.86.11🇨🇿 WEB4U81.91.80.0/21 | ||||||
| PTR | php5.web4u.cz | ||||||
| NS | ns2.web4u.cz ⭐ | ||||||
| A | 2a02:a40:100:28ff::12🇨🇿 BlueTone-AS2a02:a40::/32 Ceske Radiokomunikace, a.s. | ||||||
| PTR | ns2.web4u.cz | ||||||
| A | 85.207.53.12🇨🇿 BlueTone-AS85.207.0.0/16 BlueTone-CRa-CZ Fourth address block | ||||||
| PTR | ns2.web4u.cz | ||||||
| NS | ns.web4u.cz | ||||||
| A | 2001:1568:fd::241🇨🇿 WEB4U2001:1568::/33 | ||||||
| PTR | ns.web4u.cz | ||||||
| A | 185.14.224.241🇨🇿 WEB4U185.14.224.0/23 | ||||||
| PTR | ns.web4u.cz | ||||||
| MX | mx1.mailchannels.net ⭐ | ||||||
| A | 54.187.177.89🇺🇸 Amazon54.186.0.0/15 EC2 PDX prefix | ||||||
| PTR | ec2-54-187-177-89.us-west-2.compute.amazonaws.com | ||||||
| MX | mx2.mailchannels.net ⭐ | ||||||
| A | 54.187.177.89🇺🇸 Amazon54.186.0.0/15 EC2 PDX prefix | ||||||
| PTR | ec2-54-187-177-89.us-west-2.compute.amazonaws.com | ||||||
| TXT | v=spf1 include:_spf.web4u.cz ~all | ||||||
| SOA | ns.web4u.czadmin@web4u.cz 2025-12-29 #0 | ||||||
eu
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | si.dns.eu ⭐ | ||||||
| NS | be.dns.eu | ||||||
| NS | w.dns.eu | ||||||
| NS | x.dns.eu | ||||||
| NS | y.dns.eu | ||||||
| SOA | si.dns.eutech@eurid.eu serial=1126446618 | ||||||
Subdomains
mail.extima.eu |
Same first word
Similar names
DNS History
6 records (5 active, 1 former)
○MXmail.extima.eu2015-05-24 → 2017-07-05 · 4 obs
● 2017-07-05 09:33:38
○ 2026-04-06 19:48:24
○ 2026-07-25 22:27:08
●MXmx1.mailchannels.net2026-04-06 → 2026-07-25 · 3 obs
● 2026-04-06 19:48:24
● 2026-07-25 22:27:08
●MXmx2.mailchannels.net2026-04-06 → 2026-07-25 · 3 obs
● 2026-04-06 19:48:24
● 2026-07-25 22:27:08
●A81.91.86.112015-05-24 → 2026-07-25 · 2 obs
● 2026-07-25 22:27:08
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| eu | be.dns.eu, y.dns.eu, x.dns.eu, si.dns.eu... | - |
| extima.eu | ns2.web4u.cz, ns.web4u.cz | - |
✅ Authoritative Response
Server:85.207.53.12
NS records: ns2.web4u.cz, ns.web4u.cz
🔒 DNSSEC Status
🔐 Secure (DNSSEC validated)
Chain of trust verified from root to domain
⏱️ Timing
Total: 1098ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 81.91.86.11 |
| NS | 2 | ns.web4u.cz, ns2.web4u.cz |
| MX | 2 | mx1.mailchannels.net (pri: 10), mx2.mailchannels.net (pri: 10) |
| TXT | 1 | v=spf1 include:_spf.web4u.cz ~all |
| SOA | 1 | ns.web4u.cz admin.web4u.cz |
Analysis
Hierarchy
extima.eu is the parent zone for mail.extima.eu.
IP Addresses
extima.eu resolves to just one IP address, 81.91.86.11.
Two other host names, along with via-natura.cz, unassigned-81-91-86-149.web4u.cz and www.velorexy.cz, also share IP numbers with extima.eu.
Name Servers
extima.eu has two authoritative name servers — ns2.web4u.cz and ns.web4u.cz.
extima.eu shares its NS records with other domains, for example serverbox.cz, duhovaplaneta.eu, nextmet.com and two others.
Both ns2.web4u.cz and ns.web4u.cz have two IP addresses each. ns2.web4u.cz resolves to 85.207.53.12 and 2a02:a40:100:28ff::12; ns.web4u.cz resolves to 185.14.224.241 and 2001:1568:fd::241.
Mail Servers
extima.eu is served by two mail servers, mx1.mailchannels.net and mx2.mailchannels.net.
Among the domains sharing a mail server setup with extima.eu are postguide.com, manhattan-nest.com, baznica.tv and two others.
extima.eu partially shares its mail servers with other domains, lj-projektresultat.se and le-passe-montagne.fr being examples.
mx1.mailchannels.net and mx2.mailchannels.net each point to one IP address — 54.187.177.89.
The host names mx1.mailchannels.net and mx2.mailchannels.net both resolve to 54.187.177.89 IP addresses.