chvalovsky.cz - robtex.com

chvalovsky.cz

DNSSEC๐Ÿ”’ Signed (DS record present)
A127.0.0.1
NSns2.web4u.cz โญ
A2a02:a40:100:28ff::12๐Ÿ‡จ๐Ÿ‡ฟ BlueTone-AS2a02:a40::/32 Ceske Radiokomunikace, a.s.
PTRns2.web4u.cz
A85.207.53.12๐Ÿ‡จ๐Ÿ‡ฟ BlueTone-AS85.207.0.0/16 BlueTone-CRa-CZ Fourth address block
PTRns2.web4u.cz
NSns.web4u.cz
A2001:1568:fd::241๐Ÿ‡จ๐Ÿ‡ฟ WEB4U2001:1568::/33
PTRns.web4u.cz
A185.14.224.241๐Ÿ‡จ๐Ÿ‡ฟ WEB4U185.14.224.0/23
PTRns.web4u.cz
MXaspmx.l.google.com โญ
A2607:f8b0:4004:c1b::1a๐Ÿ‡บ๐Ÿ‡ธ Google2607:f8b0:4004::/48
PTRwv-in-f26.1e100.net
A142.251.111.26๐Ÿ‡บ๐Ÿ‡ธ Google142.251.111.0/24
PTRbk-in-f26.1e100.net
MXalt1.aspmx.l.google.com(5)
A2800:3f0:4003:c0f::1a๐Ÿ‡จ๐Ÿ‡ฑ Google2800:3f0:4003::/48
A108.177.123.27๐Ÿ‡บ๐Ÿ‡ธ Google108.177.123.0/24
PTRlcscld-in-f27.1e100.net
MXalt2.aspmx.l.google.com(5)
A2a00:1450:400b:c02::1a๐Ÿ‡ฎ๐Ÿ‡ช Google2a00:1450:400b::/48
PTRdj-in-f26.1e100.net
A172.253.116.27๐Ÿ‡บ๐Ÿ‡ธ Google172.253.116.0/24
PTRdj-in-f27.1e100.net
MXalt3.aspmx.l.google.com(10)
A2607:f8b0:4023:3003::1b๐Ÿ‡บ๐Ÿ‡ธ Google2607:f8b0::/32
PTRyulnkjt-in-f27.1e100.net
A172.253.145.27๐Ÿ‡บ๐Ÿ‡ธ Google172.253.145.0/24
PTRyulnkjt-in-f27.1e100.net
MXalt4.aspmx.l.google.com(10)
A2607:f8b0:4003:c4a::1a๐Ÿ‡บ๐Ÿ‡ธ Google2607:f8b0:4003::/48
PTRyutulth-in-f26.1e100.net
A142.251.96.27๐Ÿ‡บ๐Ÿ‡ธ Google142.250.0.0/15
PTRyutulth-in-f27.1e100.net
TXTv=spf1 include:_spf.google.com ~all
SOAns.web4u.czadmin@web4u.cz 2025-04-08 #2

cz

DNSSEC๐Ÿ”’ Signed (DS record present)
NSa.ns.nic.cz โญ
NSb.ns.nic.cz
NSc.ns.nic.cz
NSd.ns.nic.cz
SOAa.ns.nic.czhostmaster@nic.cz serial=1775252835

Same first word

Similar names

DNS History

12 records (8 active, 4 former)

20162017201820192020202120222023202420252026NSns.web4u.czns2.web4u.czMXalt1.aspmx.l.google.comalt2.aspmx.l.google.comalt3.aspmx.l.google.comalt4.aspmx.l.google.comaspmx.l.google.comaspmx2.googlemail.comaspmx3.googlemail.comaspmx4.googlemail.comaspmx5.googlemail.comA127.0.0.1
โ—NSns.web4u.cz2015-07-18 โ†’ 2026-04-03 ยท 2 obs
โ— 2015-07-18 03:57:28
โ— 2026-04-03 22:34:32
โ—NSns2.web4u.cz2015-07-18 โ†’ 2026-04-03 ยท 2 obs
โ— 2015-07-18 03:57:28
โ— 2026-04-03 22:34:32
โ—MXalt1.aspmx.l.google.com2015-07-18 โ†’ 2026-04-03 ยท 2 obs
โ— 2015-07-18 03:57:28
โ— 2026-04-03 22:34:32
โ—MXalt2.aspmx.l.google.com2015-07-18 โ†’ 2026-04-03 ยท 2 obs
โ— 2015-07-18 03:57:28
โ— 2026-04-03 22:34:32
โ—MXalt3.aspmx.l.google.com2026-04-03 โ†’ 2026-04-03 ยท 2 obs
โ—‹ 2017-01-28 18:37:32
โ— 2026-04-03 22:34:32
โ—MXalt4.aspmx.l.google.com2026-04-03 โ†’ 2026-04-03 ยท 2 obs
โ—‹ 2017-01-28 18:37:32
โ— 2026-04-03 22:34:32
โ—MXaspmx.l.google.com2015-07-18 โ†’ 2026-04-03 ยท 2 obs
โ— 2015-07-18 03:57:28
โ— 2026-04-03 22:34:32
โ—‹MXaspmx2.googlemail.com2015-07-18 โ†’ 2017-01-28 ยท 3 obs
โ— 2015-07-18 03:57:28
โ— 2017-01-28 18:37:32
โ—‹ 2026-04-03 22:34:32
โ—‹MXaspmx3.googlemail.com2015-07-18 โ†’ 2017-01-28 ยท 3 obs
โ— 2015-07-18 03:57:28
โ— 2017-01-28 18:37:32
โ—‹ 2026-04-03 22:34:32
โ—‹MXaspmx4.googlemail.com2015-07-18 โ†’ 2017-01-28 ยท 3 obs
โ— 2015-07-18 03:57:28
โ— 2017-01-28 18:37:32
โ—‹ 2026-04-03 22:34:32
โ—‹MXaspmx5.googlemail.com2015-07-18 โ†’ 2017-01-28 ยท 3 obs
โ— 2015-07-18 03:57:28
โ— 2017-01-28 18:37:32
โ—‹ 2026-04-03 22:34:32
โ—A127.0.0.12026-04-03 โ†’ 2026-04-03 ยท 1 obs
โ— 2026-04-03 22:34:32

๐Ÿ” DNS Trace

๐Ÿ“‹ Delegation Chain

ZoneNameserversGlue
cza.ns.nic.cz, b.ns.nic.cz, c.ns.nic.cz, d.ns.nic.cz-
chvalovsky.czns.web4u.cz, ns2.web4u.cz4 records

โœ… Authoritative Response

Server:185.14.224.241

NS records: ns.web4u.cz, ns2.web4u.cz

๐Ÿ”’ DNSSEC Status

๐Ÿ” Secure (DNSSEC validated)

Chain of trust verified from root to domain

โฑ๏ธ Timing

Total: 1088ms | Queries: -

๐Ÿ“„ Records

TypeCountSample Data
A1127.0.0.1
NS2ns.web4u.cz, ns2.web4u.cz
MX5aspmx.l.google.com (pri: 1), alt1.aspmx.l.google.com (pri: 5)...
TXT1v=spf1 include:_spf.google.com ~all
SOA1ns.web4u.cz admin.web4u.cz

๐Ÿ“Œ Glue Records Collected

Total: 4

Out-of-bailiwick: 4 (ns.web4u.cz, ns.web4u.cz, ns2.web4u.cz...)

Analysis

IP Addresses

chvalovsky.cz points to a single IP: 127.0.0.1.

Other host names, for instance rectmn.ru, 25pp.com, 98.176.static.quadranet.com, test.transhub.io and 254.213.8.static.quadranet.com share IP numbers with chvalovsky.cz.

Name Servers

Two name servers ns2.web4u.cz and ns.web4u.cz handle delegation for chvalovsky.cz.

chvalovsky.cz uses the same name server setup as other domains, for example vmgroup.cz, libchavy.cz, levne-fasady.cz, nfcp.cz and highlab.sk.

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

Five mail servers handle chvalovsky.cz: aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com, alt3.aspmx.l.google.com and alt4.aspmx.l.google.com.

chvalovsky.cz shares some mail servers with other domains, at least partially, such as cosic.jp, ns500671.ns500754.ns500754.ns500742.ns500742.ns500704.ns500731.ns500688.ns500688.ns500678.ns500688.ns500649.ns500671.ns500649.ns500666.ns500291.ns500131.lustychickser.com, ns500758.ns500759.ns500698.ns500759.ns500736.ns500735.ns500708.ns500576.ns500576.ns500698.ns500686.ns500619.trackreceptor.com, ns500758.ns500698.ns500698.ns500698.ns500758.ns500735.ns500735.ns500576.ns500708.ns500698.ns500652.ns500576.ns500576.trackreceptor.com and ns500699.ns500699.ns500693.ns500693.ns500734.ns500699.ns500693.ns500699.ns500699.ns500588.ns500693.ns500588.ns500699.ns500693.ns500588.ns500110.dtrkdll.com.

These mail servers are often used with aspmx2.googlemail.com, aspmx3.googlemail.com, aspmx4.googlemail.com and aspmx5.googlemail.com.

Host names with two IP numbers:

aspmx.l.google.com points to: 2607:f8b0:4004:c1b::1a and 142.251.111.26

alt1.aspmx.l.google.com points to: 2800:3f0:4003:c0f::1a and 108.177.123.27

alt2.aspmx.l.google.com points to: 2a00:1450:400b:c02::1a and 172.253.116.27

alt3.aspmx.l.google.com points to: 2607:f8b0:4023:3003::1b and 172.253.145.27

alt4.aspmx.l.google.com points to: 2607:f8b0:4003:c4a::1a and 142.251.96.27