alfom.cz - robtex.com
alfom.cz
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| A | 2001:1568::14🇨🇿 WEB4U2001:1568::/33 | ||||||
| PTR | php7.web4u.cz | ||||||
| A | 81.91.86.14🇨🇿 WEB4U81.91.80.0/21 | ||||||
| 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 | 54.69.1.140🇺🇸 Amazon54.68.0.0/15 EC2 PDX Prefix | ||||||
| PTR | ec2-54-69-1-140.us-west-2.compute.amazonaws.com | ||||||
| SOA | ns.web4u.czadmin@web4u.cz 2025-05-05 #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=1776989836 | ||||||
Subdomains
mail.alfom.cz |
Same first word
Similar names
DNS History
10 records (6 active, 4 former)
●NSns.web4u.cz2026-04-12 → 2026-04-24 · 3 obs
● 2026-04-12 15:09:46
● 2026-04-24 00:52:00
○NSns1.ebrana.cz2015-05-28 → 2017-06-08 · 4 obs
● 2017-06-08 18:49:02
○ 2026-04-12 15:09:46
○ 2026-04-24 00:52:00
○NSns2.ebrana.cz2015-05-28 → 2017-06-08 · 4 obs
● 2017-06-08 18:49:02
○ 2026-04-12 15:09:46
○ 2026-04-24 00:52:00
●NSns2.web4u.cz2026-04-12 → 2026-04-24 · 3 obs
● 2026-04-12 15:09:46
● 2026-04-24 00:52:00
○MXmail.alfom.cz2015-05-28 → 2017-06-08 · 4 obs
● 2017-06-08 18:49:02
○ 2026-04-12 15:09:46
○ 2026-04-24 00:52:00
●MXmx1.mailchannels.net2026-04-12 → 2026-04-24 · 3 obs
● 2026-04-12 15:09:46
● 2026-04-24 00:52:00
●MXmx2.mailchannels.net2026-04-12 → 2026-04-24 · 3 obs
● 2026-04-12 15:09:46
● 2026-04-24 00:52:00
○A109.205.75.422015-05-28 → 2017-06-08 · 4 obs
● 2017-06-08 18:49:02
○ 2026-04-12 15:09:46
○ 2026-04-24 00:52:00
●A2001:1568::142026-04-12 → 2026-04-24 · 3 obs
● 2026-04-12 15:09:46
● 2026-04-24 00:52:00
●A81.91.86.142026-04-12 → 2026-04-24 · 3 obs
● 2026-04-12 15:09:46
● 2026-04-24 00:52:00
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cz | a.ns.nic.cz, c.ns.nic.cz, b.ns.nic.cz, d.ns.nic.cz | - |
| alfom.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: 1114ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 81.91.86.14 |
| AAAA | 1 | 2001:1568::14 |
| 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.alfom.cz is alfom.cz.
IP Addresses
alfom.cz points to two IP numbers: 2001:1568::14 and 81.91.86.14.
Other host names, for instance d317.server4u.cz, ns2.wavenet.cz, www.tokarex.cz, kingdrink.eu and vs1060.server4u.cz share IP numbers with alfom.cz.
Name Servers
alfom.cz is delegated to two name servers: ns2.web4u.cz and ns.web4u.cz.
alfom.cz uses the same name server setup as other domains, for instance rh-arch.com, 4allpro.cz, brdy.info, keepsmileklinika.cz and reguli.cz.
Host names with two IP numbers:
The host ns2.web4u.cz points to 2a02:a40:100:28ff::12 and 85.207.53.12.
The host ns.web4u.cz points to 2001:1568:fd::241 and 185.14.224.241.
Mail Servers
alfom.cz is handled by two mail servers: mx1.mailchannels.net and mx2.mailchannels.net.
alfom.cz shares the same mail server setup as other domains, including billianyarns.com, brontosaurus.org, asbam.com.br, amadeux.net and jakedoty.com.
At least part of alfom.cz's mail servers are shared with other domains, for instance highway30.org and avanzastrategies.com.
Host names with a single IP number:
mx1.mailchannels.net points to 54.69.1.140.
mx2.mailchannels.net points to 54.69.1.140.
Host names pointing to 54.69.1.140: mx1.mailchannels.net and mx2.mailchannels.net.