basic-numbers.com - dns.ninja

basic-numbers.com

DNSSEC⚠️ Not signed
A2a01:28:ca:125::1🇨🇿 SuperNetwork2a01:28::/32 s.r.o.
A88.86.119.233🇨🇿 SuperNetwork88.86.96.0/19 s.r.o.
NSns2.web4u.cz
A2a02:a40:100:28ff::12🇨🇿 BlueTone-AS2a02:a40::/32 Ceske Radiokomunikace, a.s.
PTRns2.web4u.cz
A85.207.53.12🇨🇿 BlueTone-AS85.207.0.0/16 BlueTone-CRa-CZ Fourth address block
PTRns2.web4u.cz
NSns.web4u.cz
A2001:1568:fd::241🇨🇿 WEB4U2001:1568::/33
PTRns.web4u.cz
A185.14.224.241🇨🇿 WEB4U185.14.224.0/23
PTRns.web4u.cz
MXbasicnumbers-com01c.mail.protection.outlook.com
A2a01:111:f403:ca04::a🇮🇪 Microsoft2a01:111:f000::/36
PTRmail-du0pr03cu00102.inbound.protection.outlook.com
A2a01:111:f403:ca04::b🇮🇪 Microsoft2a01:111:f000::/36
PTRmail-dbbpr03cu00103.inbound.protection.outlook.com
A2a01:111:f403:ca04::10🇮🇪 Microsoft2a01:111:f000::/36
PTRmail-dbapr03cu00100.inbound.protection.outlook.com
A2a01:111:f403:ca09::4🇳🇱 Microsoft2a01:111:f000::/36
PTRmail-am0pr04cu00504.inbound.protection.outlook.com
A52.101.68.27🇮🇪 Microsoft52.96.0.0/12 MICROSOFT
PTRmail-db7pr03cu00503.inbound.protection.outlook.com
A52.101.73.1🇳🇱 Microsoft52.96.0.0/12 MICROSOFT
PTRmail-am3pr04cu00501.inbound.protection.outlook.com
A52.101.73.2🇳🇱 Microsoft52.96.0.0/12 MICROSOFT
PTRmail-as9pr07cu00302.inbound.protection.outlook.com
A52.101.73.28🇳🇱 Microsoft52.96.0.0/12 MICROSOFT
PTRmail-am7pr05cu00204.inbound.protection.outlook.com
MXmx.web4u.cz(10)
A2001:1568::7012🇨🇿 WEB4U2001:1568::/33
PTRmx.web4u.cz
A81.91.87.12🇨🇿 WEB4U81.91.80.0/21
PTRmx.web4u.cz
TXTMS=ms50314034
TXTv=spf1 include:spf.protection.outlook.com include:eu.mailgun.org ~all
SOAns.web4u.czadmin@web4u.cz 2020-08-21 #1

com

Same first word

DNS History

6 records (6 active, 0 former)

NSns.web4u.czns2.web4u.czMXbasicnumbers-com01c.mail.protection.outlook.commx.web4u.czA2a01:28:ca:125::188.86.119.233
NSns.web4u.cz2026-02-14 → 2026-07-01 · 2 obs
● 2026-02-14 20:19:54
● 2026-07-01 10:38:14
NSns2.web4u.cz2026-02-14 → 2026-07-01 · 2 obs
● 2026-02-14 20:19:54
● 2026-07-01 10:38:14
MXbasicnumbers-com01c.mail.protection.outlook.com2026-02-14 → 2026-07-01 · 2 obs
● 2026-02-14 20:19:54
● 2026-07-01 10:38:14
MXmx.web4u.cz2026-02-14 → 2026-07-01 · 2 obs
● 2026-02-14 20:19:54
● 2026-07-01 10:38:14
A2a01:28:ca:125::12026-02-14 → 2026-07-01 · 2 obs
● 2026-02-14 20:19:54
● 2026-07-01 10:38:14
A88.86.119.2332026-02-14 → 2026-07-01 · 2 obs
● 2026-02-14 20:19:54
● 2026-07-01 10:38:14

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
coml.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net...-
basic-numbers.comns.web4u.cz, ns2.web4u.cz-

✅ Authoritative Response

Server:185.14.224.241

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for basic-numbers.com (unsigned zone)

⏱️ Timing

Total: 1114ms | Queries: -

📄 Records

TypeCountSample Data
A188.86.119.233
AAAA12a01:28:ca:125::1
NS2ns.web4u.cz, ns2.web4u.cz
MX2basicnumbers-com01c.mail.protection.outl, mx.web4u.cz (pri: 10)
TXT2MS=ms50314034, v=spf1 include:spf.protection.outlook.co
SOA1ns.web4u.cz admin.web4u.cz

Analysis

IP Addresses

basic-numbers.com directs to two IP numbers, 88.86.119.233 and 2a01:28:ca:125::1

Additional host names — www.vymluvy.cz, marketingovepruzkumy.cz, www.oabk.cz and two others — share IP numbers with basic-numbers.com.

Name Servers

basic-numbers.com has two authoritative name servers — ns2.web4u.cz and ns.web4u.cz.

basic-numbers.com shares its name server setup with other domains, including kovopol.eu, iartwork.cz, 64u.name 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

basic-numbers.com has two mail servers: mx.web4u.cz and basicnumbers-com01c.mail.protection.outlook.com.

basic-numbers.com shares mail servers — at least in part — with other domains, including motlikova.com, learniga.com, bookkeeper.cz and two others.

Host names with 8 IP numbers:

basicnumbers-com01c.mail.protection.outlook.com points to 52.101.68.27, 52.101.73.1, 52.101.73.2 and 5 other IP addresses.

Host names with two IP numbers:

mx.web4u.cz resolves to 81.91.87.12 and 2001:1568::7012.