selflearning.cz - dns.ninja
selflearning.cz
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=1786393041 | ||||||
Same first word
selflearning.co |
selflearning.org |
selflearning.cz |
selflearning.de |
selflearning.net |
selflearning.com |
selflearning.it |
DNS History
11 records (8 active, 3 former)
○MXadsl.insite.cz2015-07-26 → 2017-03-17 · 4 obs
● 2017-03-17 11:09:24
○ 2020-02-16 02:56:00
○ 2026-08-10 21:10:08
●MXalt1.aspmx.l.google.com2020-02-16 → 2026-08-10 · 3 obs
● 2020-02-16 02:56:00
● 2026-08-10 21:10:08
●MXalt2.aspmx.l.google.com2020-02-16 → 2026-08-10 · 3 obs
● 2020-02-16 02:56:00
● 2026-08-10 21:10:08
●MXalt3.aspmx.l.google.com2020-02-16 → 2026-08-10 · 3 obs
● 2020-02-16 02:56:00
● 2026-08-10 21:10:08
●MXalt4.aspmx.l.google.com2020-02-16 → 2026-08-10 · 3 obs
● 2020-02-16 02:56:00
● 2026-08-10 21:10:08
●MXaspmx.l.google.com2020-02-16 → 2026-08-10 · 3 obs
● 2020-02-16 02:56:00
● 2026-08-10 21:10:08
○MXcable.insite.cz2015-07-26 → 2017-03-17 · 4 obs
● 2017-03-17 11:09:24
○ 2020-02-16 02:56:00
○ 2026-08-10 21:10:08
○MXns2.insite.cz2015-07-26 → 2017-03-17 · 4 obs
● 2017-03-17 11:09:24
○ 2020-02-16 02:56:00
○ 2026-08-10 21:10:08
●A81.0.199.1772015-07-26 → 2026-08-10 · 2 obs
● 2026-08-10 21:10:08
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cz | a.ns.nic.cz, b.ns.nic.cz, c.ns.nic.cz, d.ns.nic.cz | 8 records |
| selflearning.cz | ns1.ignum.com, ns2.ignum.cz | 2 records |
✅ Authoritative Response
Server:217.31.48.201
NS records: ns1.ignum.com, ns2.ignum.cz
🔒 DNSSEC Status
🔐 Secure (DNSSEC validated)
Chain of trust verified from root to domain
⏱️ Timing
Total: 1194ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 81.0.199.177 |
| NS | 2 | ns1.ignum.com, ns2.ignum.cz |
| MX | 5 | alt4.aspmx.l.google.com (pri: 10), alt3.aspmx.l.google.com (pri: 10)... |
| TXT | 2 | v=spf1 a ip4:88.101.85.59 ip4:81.0.237.2, google-site-verification=mGFamV6e5tN0cCf |
| SOA | 1 | ns1.ignum.com hostmaster.ignum.cz |
📌 Glue Records Collected
Total: 10
In-bailiwick: 8 (a.ns.nic.cz, b.ns.nic.cz, c.ns.nic.cz...)
Out-of-bailiwick: 2 (ns2.ignum.cz, ns2.ignum.cz)
Analysis
IP Addresses
selflearning.cz resolves to just one IP address, 81.0.199.177.
Name Servers
selflearning.cz is delegated to two name servers: ns1.ignum.com and ns2.ignum.cz.
selflearning.cz shares its NS records with other domains, for example jihlava-city.cz, unistrap.sk, 7hrichu.cz and two others.
The name servers of selflearning.cz overlap at least partially with those of other domains — among them kamiony.cz, vedex.cz, reservatic.com and two more.
These name servers commonly co-occur with the name servers ns1.webcloud.cz, ns1.ignum.eu, ns2.ignum.eu and ns3.ignum.eu.
ns1.ignum.com and ns2.ignum.cz each resolve to two IP addresses: ns1.ignum.com points to 185.65.223.35 and 2a00:1e40:a:53::5, while ns2.ignum.cz points to 217.31.48.201 and 2001:1ab0:7e1e:2::5.
Mail Servers
Five mail servers handle selflearning.cz: aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com and two others.
There is at least a partial MX overlap between selflearning.cz and other domains, including northmid.co.uk, cloudcounting.com, ns500754.ns500671.ns500754.ns500742.ns500704.ns500742.ns500671.ns500705.ns500649.ns500678.ns500291.ns500291.ns500131.lustychickser.com and two others.
alt3.aspmx.l.google.com, alt4.aspmx.l.google.com, aspmx2.googlemail.com and aspmx3.googlemail.com are mail servers that frequently appear together with these mail servers.
Host names that have two IP addresses:
aspmx.l.google.com points to 192.178.155.27 and 2607:f8b0:4004:c17::1a.
alt1.aspmx.l.google.com points to 192.178.234.26 and 2800:3f0:4003:c14::1a.
alt2.aspmx.l.google.com points to 172.253.116.26 and 2a00:1450:400b:c02::1b.
alt3.aspmx.l.google.com points to 192.178.223.26 and 2a00:1450:4009:c0f::1b.
alt4.aspmx.l.google.com points to 172.253.157.26 and 2a00:1450:400c:c23::1b.