fykos.cz - robtex.com

fykos.cz

DNSSEC🔒 Signed (DS record present)
A195.113.17.221🇨🇿 CESNET195.113.0.0/16 -TCZ
NSgolias.ruk.cuni.cz ⭐
A2001:718:1e03:1::2🇨🇿 CESNET2001:718::/32 6-TCZ
A195.113.0.2🇨🇿 CESNET195.113.0.0/16 -TCZ
PTRgolias.ruk.cuni.cz
NScuce.ruk.cuni.cz
A2001:718:1e03:1::8🇨🇿 CESNET2001:718::/32 6-TCZ
A195.113.0.8🇨🇿 CESNET195.113.0.0/16 -TCZ
PTRcuce.ruk.cuni.cz
NSdavid.ruk.cuni.cz
A2001:718:1203:502::2🇨🇿 CESNET2001:718::/32 6-TCZ
PTRdavid.ruk.cuni.cz
A78.128.213.242🇨🇿 CESNET78.128.128.0/17 -TCZ
MXaspmx.l.google.com ⭐
A2607:f8b0:4023:c0b::1b🇺🇸 Google2607:f8b0::/32
PTRdd-in-f27.1e100.net
A142.250.101.27🇺🇸 Google142.250.101.0/24
PTRdz-in-f27.1e100.net
MXalt1.aspmx.l.google.com(20)
A2607:f8b0:4023:2801::1b🇺🇸 Google2607:f8b0::/32
PTRlcausi-in-f27.1e100.net
A192.178.128.27🇺🇸 Google192.178.128.0/24
PTRlcausi-in-f27.1e100.net
MXalt2.aspmx.l.google.com(20)
A2607:f8b0:4023:3003::1b🇺🇸 Google2607:f8b0::/32
PTRyulnkjt-in-f27.1e100.net
A172.253.145.26🇺🇸 Google172.253.145.0/24
PTRyulnkjt-in-f26.1e100.net
MXalt3.aspmx.l.google.com(30)
A2a00:1450:4009:c0f::1a🇬🇧 Google2a00:1450:4009::/48
PTRyulhrs-in-f26.1e100.net
A192.178.223.26🇺🇸 Google192.178.223.0/24
PTRyulhrs-in-f26.1e100.net
MXalt4.aspmx.l.google.com(30)
A2a00:1450:400c:c00::1b🇧🇪 Google2a00:1450:400c::/48
PTRws-in-f27.1e100.net
PTRws-in-x1b.1e100.net
A173.194.76.27🇺🇸 Google173.194.76.0/24
PTRws-in-f27.1e100.net
TXTgoogle-site-verification=_5Cdtur5lZV9GWCMjbsBKu_qBJ5ZCJRnaYpvuipgiFs
TXTv=spf1 a a:gw.troja.mff.cuni.cz include:_spf.google.com include:_spfset.kam.m...
SOAgolias.ruk.cuni.czpostmaster@dec59.ruk.cuni.cz 2025-07-24 #33

cz

DNSSEC🔒 Signed (DS record present)
NSa.ns.nic.cz ⭐
NSb.ns.nic.cz
NSc.ns.nic.cz
NSd.ns.nic.cz
SOAa.ns.nic.czhostmaster@nic.cz serial=1778728652
WOT: SAFE (61/100)

Same first word

fykos.org
fykos.cz

Similar names

oyskf.com
sofyk.com
foksy.lv
sykof.pl
fosky.cn
fosky.net
fosky.com
ykofs.com
okfys.com
kysof.com

DNS History

14 records (9 active, 5 former)

20162017201820192020202120222023202420252026NScuce.ruk.cuni.czdavid.ruk.cuni.czgolias.ruk.cuni.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.comA195.113.17.221195.113.23.5
●NScuce.ruk.cuni.cz2015-07-12 → 2026-05-14 · 2 obs
● 2015-07-12 03:18:52
● 2026-05-14 03:47:06
●NSdavid.ruk.cuni.cz2026-02-18 → 2026-05-14 · 3 obs
○ 2015-07-12 03:18:52
● 2026-02-18 04:42:12
● 2026-05-14 03:47:06
●NSgolias.ruk.cuni.cz2015-07-12 → 2026-05-14 · 2 obs
● 2015-07-12 03:18:52
● 2026-05-14 03:47:06
●MXalt1.aspmx.l.google.com2015-07-12 → 2026-05-14 · 2 obs
● 2015-07-12 03:18:52
● 2026-05-14 03:47:06
●MXalt2.aspmx.l.google.com2015-07-12 → 2026-05-14 · 2 obs
● 2015-07-12 03:18:52
● 2026-05-14 03:47:06
●MXalt3.aspmx.l.google.com2026-02-18 → 2026-05-14 · 3 obs
○ 2017-03-26 12:41:18
● 2026-02-18 04:42:12
● 2026-05-14 03:47:06
●MXalt4.aspmx.l.google.com2026-02-18 → 2026-05-14 · 3 obs
○ 2017-03-26 12:41:18
● 2026-02-18 04:42:12
● 2026-05-14 03:47:06
●MXaspmx.l.google.com2015-07-12 → 2026-05-14 · 2 obs
● 2015-07-12 03:18:52
● 2026-05-14 03:47:06
○MXaspmx2.googlemail.com2015-07-12 → 2017-03-26 · 4 obs
● 2015-07-12 03:18:52
● 2017-03-26 12:41:18
○ 2026-02-18 04:42:12
○ 2026-05-14 03:47:06
○MXaspmx3.googlemail.com2015-07-12 → 2017-03-26 · 4 obs
● 2015-07-12 03:18:52
● 2017-03-26 12:41:18
○ 2026-02-18 04:42:12
○ 2026-05-14 03:47:06
○MXaspmx4.googlemail.com2015-07-12 → 2017-03-26 · 4 obs
● 2015-07-12 03:18:52
● 2017-03-26 12:41:18
○ 2026-02-18 04:42:12
○ 2026-05-14 03:47:06
○MXaspmx5.googlemail.com2015-07-12 → 2017-03-26 · 4 obs
● 2015-07-12 03:18:52
● 2017-03-26 12:41:18
○ 2026-02-18 04:42:12
○ 2026-05-14 03:47:06
●A195.113.17.2212026-02-18 → 2026-05-14 · 3 obs
○ 2017-03-26 12:41:18
● 2026-02-18 04:42:12
● 2026-05-14 03:47:06
○A195.113.23.52015-07-12 → 2017-03-26 · 4 obs
● 2015-07-12 03:18:52
● 2017-03-26 12:41:18
○ 2026-02-18 04:42:12
○ 2026-05-14 03:47:06

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
czb.ns.nic.cz, c.ns.nic.cz, d.ns.nic.cz, a.ns.nic.cz-
fykos.czcuce.ruk.cuni.cz, david.ruk.cuni.cz, golias.ruk.cuni.cz6 records

✅ Authoritative Response

Server:195.113.0.8

NS records: cuce.ruk.cuni.cz, david.ruk.cuni.cz, golias.ruk.cuni.cz

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 889ms | Queries: -

📄 Records

TypeCountSample Data
A1195.113.17.221
NS3cuce.ruk.cuni.cz, david.ruk.cuni.cz...
MX5aspmx.l.google.com (pri: 10), alt4.aspmx.l.google.com (pri: 30)...
TXT2v=spf1 a a:gw.troja.mff.cuni.cz include:, google-site-verification=_5Cdtur5lZV9GWC
SOA1golias.ruk.cuni.cz postmaster.dec59.ruk.

📌 Glue Records Collected

Total: 6

Out-of-bailiwick: 6 (cuce.ruk.cuni.cz, cuce.ruk.cuni.cz, david.ruk.cuni.cz...)

Analysis

IP Addresses

fykos.cz points to a single IP number: 195.113.17.221.

Other host names such as dsef.cz, fykos.org and tsaf.cz share IP numbers with fykos.cz.

Name Servers

The delegation for fykos.cz is handled by three name servers: cuce.ruk.cuni.cz, david.ruk.cuni.cz and golias.ruk.cuni.cz.

fykos.cz at least partially shares name servers with other domains, for instance 185.128.78.in-addr.arpa, lf1.cuni.cz, rogo.cz, grita.cz and ulohy.cz.

These name servers are commonly used together with the name servers cucc.ruk.cuni.cz, ns.lf1.cuni.cz, ruzenka.prf.cuni.cz, owl.karlov.mff.cuni.cz, jay.karlov.mff.cuni.cz, ns2.troja.mff.cuni.cz, ns.troja.mff.cuni.cz, nms-a.pasnet.cz, nms-b.pasnet.cz and uther.lfhk.cuni.cz.

Two IP numbers per host:

cuce.ruk.cuni.cz points to 2001:718:1e03:1::8 and 195.113.0.8.

david.ruk.cuni.cz points to 2001:718:1203:502::2 and 78.128.213.242.

golias.ruk.cuni.cz points to 2001:718:1e03:1::2 and 195.113.0.2.

Mail Servers

fykos.cz is handled by five mail servers: 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.

fykos.cz shares mail servers with other domains at least in part, for instance ns500754.ns500754.ns500671.ns500671.ns500754.ns500742.ns500742.ns500731.ns500731.ns500705.ns500705.ns500704.ns500291.ns500688.ns500142.lusty(0x736c7574)z.com, ns500734.ns500734.ns500699.ns500699.ns500699.ns500693.ns500699.ns500693.ns500699.ns500683.ns500693.ns500699.ns500612.ns500632.ns500612.dtrkdll.com, ns500671.ns500671.ns500731.ns500731.ns500754.ns500671.ns500705.ns500671.ns500704.ns500704.ns500671.ns500678.ns500666.ns500653.ns500153.tenderladiesbz.com, ns500759.ns500698.ns500759.ns500735.ns500736.ns500698.ns500708.ns500708.ns500619.ns500652.trackreceptor.com and ns500742.ns500754.ns500742.ns500742.ns500671.ns500704.ns500678.ns500705.ns500291.ns500291.ns500649.ns500142.lusty(0x736c7574)z.com.

these mail servers are often used with aspmx2.googlemail.com and aspmx3.googlemail.com.

Host names with two IP numbers:

aspmx.l.google.com points to 2607:f8b0:4023:c0b::1b and 142.250.101.27.

alt1.aspmx.l.google.com points to 2607:f8b0:4023:2801::1b and 192.178.128.27.

alt2.aspmx.l.google.com points to 2607:f8b0:4023:3003::1b and 172.253.145.26.

alt3.aspmx.l.google.com points to 2a00:1450:4009:c0f::1a and 192.178.223.26.

alt4.aspmx.l.google.com points to 2a00:1450:400c:c00::1b and 173.194.76.27.