savarez.cz - robtex.com
savarez.cz
| 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 | 54.69.1.140🇺🇸 Amazon54.68.0.0/15 EC2 PDX Prefix | ||||||
| PTR | ec2-54-69-1-140.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 | ||||||
| SOA | ns.web4u.czadmin@web4u.cz 2025-05-04 #0 | ||||||
cz
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.ns.nic.cz ⭐ | ||||||
| NS | b.ns.nic.cz | ||||||
| NS | c.ns.nic.cz | ||||||
| NS | d.ns.nic.cz | ||||||
| SOA | a.ns.nic.czhostmaster@nic.cz serial=1776993435 | ||||||
Subdomains
mail.savarez.cz |
Same first word
Similar names
DNS History
14 records (5 active, 9 former)
○NShosting.muzikus.cz2015-07-10 → 2015-12-10 · 4 obs
● 2015-12-10 13:19:16
○ 2016-03-17 00:15:54
○ 2026-04-24 01:27:48
○NSlocal.muzikus.cz2015-07-10 → 2015-12-10 · 4 obs
● 2015-12-10 13:19:16
○ 2016-03-17 00:15:54
○ 2026-04-24 01:27:48
●NSns.web4u.cz2016-03-17 → 2026-04-24 · 3 obs
● 2016-03-17 00:15:54
● 2026-04-24 01:27:48
●NSns2.web4u.cz2016-03-17 → 2026-04-24 · 3 obs
● 2016-03-17 00:15:54
● 2026-04-24 01:27:48
○NSrelay.muzikus.cz2015-07-10 → 2015-12-10 · 4 obs
● 2015-12-10 13:19:16
○ 2016-03-17 00:15:54
○ 2026-04-24 01:27:48
○MXcaroly.czechrep.be2015-07-10 → 2015-12-10 · 4 obs
● 2015-12-10 13:19:16
○ 2016-03-17 00:15:54
○ 2026-04-24 01:27:48
○MXhosting.muzikus.cz2015-07-10 → 2015-12-10 · 4 obs
● 2015-12-10 13:19:16
○ 2016-03-17 00:15:54
○ 2026-04-24 01:27:48
○MXmail.savarez.cz2016-03-17 → 2017-03-17 · 5 obs
● 2016-03-17 00:15:54
● 2017-03-17 03:35:38
○ 2020-03-09 21:13:06
○ 2026-04-24 01:27:48
○MXmx.web4u.cz2020-03-09 → 2020-03-09 · 4 obs
● 2020-03-09 21:13:06
○ 2026-03-27 14:48:16
○ 2026-04-24 01:27:48
●MXmx1.mailchannels.net2026-03-27 → 2026-04-24 · 3 obs
● 2026-03-27 14:48:16
● 2026-04-24 01:27:48
●MXmx2.mailchannels.net2026-03-27 → 2026-04-24 · 3 obs
● 2026-03-27 14:48:16
● 2026-04-24 01:27:48
○MXrelay.muzikus.cz2015-07-10 → 2015-12-10 · 4 obs
● 2015-12-10 13:19:16
○ 2016-03-17 00:15:54
○ 2026-04-24 01:27:48
○A109.123.219.1372015-07-10 → 2015-12-10 · 4 obs
● 2015-12-10 13:19:16
○ 2016-03-17 00:15:54
○ 2026-04-24 01:27:48
●A81.91.86.112016-03-17 → 2026-04-24 · 3 obs
● 2016-03-17 00:15:54
● 2026-04-24 01:27:48
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cz | a.ns.nic.cz, b.ns.nic.cz, c.ns.nic.cz, d.ns.nic.cz | - |
| savarez.cz | ns.web4u.cz, ns2.web4u.cz | 4 records |
✅ Authoritative Response
Server:85.207.53.12
NS records: ns.web4u.cz, ns2.web4u.cz
🔒 DNSSEC Status
🔐 Secure (DNSSEC validated)
Chain of trust verified from root to domain
⏱️ Timing
Total: 944ms | 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) |
| SOA | 1 | ns.web4u.cz admin.web4u.cz |
📌 Glue Records Collected
Total: 4
Out-of-bailiwick: 4 (ns.web4u.cz, ns.web4u.cz, ns2.web4u.cz...)
Analysis
Hierarchy
The parent of mail.savarez.cz is savarez.cz.
IP Addresses
savarez.cz points to IP number: 81.91.86.11.
Other host names such as exiner.cz, unassigned-195-39-95-53.web4u.cz, csoi.eu, unassigned-81-91-85-169.web4u.cz and unassigned-81-91-84-221.web4u.cz share IPs with savarez.cz.
Name Servers
savarez.cz is delegated to two name servers: ns2.web4u.cz and ns.web4u.cz.
savarez.cz shares the same name server setup as mojekurzy.cz, ptweb.cz, mr-mare.cz, machinegroup.cz and srecepty.es.
Host names with two IP numbers: ns2.web4u.cz points to: 2a02:a40:100:28ff::12 and 85.207.53.12; ns.web4u.cz points to: 2001:1568:fd::241 and 185.14.224.241.
Mail Servers
savarez.cz is handled by two mail servers: mx1.mailchannels.net and mx2.mailchannels.net.
The mail server setup for savarez.cz matches that of other domains, for instance motorcitypens.com, careerdubai.net, aspeon.com, pricechapel.org and bolognanelcuore.net.
savarez.cz shares mail servers with other domains, for instance kapemail.com and actia.cz.
Host names with a single IP:
mx1.mailchannels.net points to 54.69.1.140.
mx2.mailchannels.net points to 54.187.177.89.