sphere.cz - robtex.com
sphere.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=1771291036 | ||||||
rank #2486 in the tld
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Same first word
Similar names
DNS History
11 records (5 active, 6 former)
●NSns1.regzone.cz2015-06-26 → 2026-02-26 · 2 obs
● 2026-02-26 12:11:32
●NSns1.regzone.de2015-06-26 → 2026-02-26 · 2 obs
● 2026-02-26 12:11:32
●NSns1.regzone.info2015-06-26 → 2026-02-26 · 2 obs
● 2026-02-26 12:11:32
○MX10mx.zoner.com2015-06-26 → 2017-01-02 · 4 obs
● 2017-01-02 08:02:06
○ 2026-02-24 08:16:36
○ 2026-02-26 12:11:32
○MX15mx.zoner.com2015-06-26 → 2017-01-02 · 4 obs
● 2017-01-02 08:02:06
○ 2026-02-24 08:16:36
○ 2026-02-26 12:11:32
○MXkerio.efin.eu2015-06-26 → 2017-01-02 · 4 obs
● 2017-01-02 08:02:06
○ 2026-02-24 08:16:36
○ 2026-02-26 12:11:32
○MXnet.efin.eu2015-06-26 → 2017-01-02 · 4 obs
● 2017-01-02 08:02:06
○ 2026-02-24 08:16:36
○ 2026-02-26 12:11:32
●MXsphere-cz.mail.protection.outlook.com2026-02-24 → 2026-02-26 · 3 obs
● 2026-02-24 08:16:36
● 2026-02-26 12:11:32
●A31.14.98.872026-02-24 → 2026-02-26 · 3 obs
● 2026-02-24 08:16:36
● 2026-02-26 12:11:32
○A80.250.24.1382015-06-26 → 2016-04-21 · 4 obs
● 2016-04-21 22:40:00
○ 2017-01-02 08:02:06
○ 2026-02-26 12:11:32
○A80.69.77.342017-01-02 → 2017-01-02 · 4 obs
● 2017-01-02 08:02:06
○ 2026-02-24 08:16:36
○ 2026-02-26 12:11:32
🔍 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 |
| sphere.cz | ns1.regzone.cz, ns1.regzone.de, ns1.regzone.info | 2 records |
✅ Authoritative Response
Server: 81.0.233.10
NS records: ns1.regzone.cz, ns1.regzone.de, ns1.regzone.info
🔒 DNSSEC Status
🔐 Secure (DNSSEC validated)
Chain of trust verified from root to domain
⏱️ Timing
Total: 2609ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 31.14.98.87 |
| NS | 3 | ns1.regzone.cz, ns1.regzone.de... |
| MX | 1 | sphere-cz.mail.protection.outlook.com (p |
| TXT | 4 | MS=ms69734970, eHUB-verification=37c3egxzmb9t7cp4sni936... |
| SOA | 1 | ns1.regzone.cz administrator.czechia.cz |
📌 Glue Records Collected
Total: 10
In-bailiwick: 8 (a.ns.nic.cz, a.ns.nic.cz, b.ns.nic.cz...)
Out-of-bailiwick: 2 (ns1.regzone.cz, ns1.regzone.cz)
AI analysis
The parent of plesk.sphere.cz, servis.sphere.cz, www.sphere.cz, verify.sphere.cz and mail.sphere.cz is sphere.cz.
sphere.cz points to a single IP: 31.14.98.87.
Other host names, for instance sphere.sk, 31-14-98-87.colo.transip.net and plesk.sphere.cz share IP numbers with sphere.cz.
sphere.cz is delegated to three name servers: ns1.regzone.cz, ns1.regzone.de and ns1.regzone.info.
sphere.cz at least partially shares its name servers with other domains, for instance prioratdoq.com, ohf.cz, pohan.cz, manum.cz and zoner.me.
Host names with two IP numbers:
ns1.regzone.cz points to: 2a00:19a0:3:71:0:d9c6:710a:1 and 217.198.113.10.
ns1.regzone.de points to: 2600:3c02::f03c:91ff:fedb:a6e7 and 23.92.29.43.
ns1.regzone.info points to: 2001:1528:147::10 and 81.0.233.10.
sphere.cz is served by a single mail server, sphere-cz.mail.protection.outlook.com.
The host name sphere-cz.mail.protection.outlook.com resolves to eight IP numbers: 2a01:111:f403:ca04::5, 2a01:111:f403:ca09::5, 2a01:111:f403:ca09::7, 2a01:111:f403:ca09::f, 52.101.68.12, 52.101.68.15, 52.101.73.15 and 52.101.73.19.