proton.sk - robtex.com
proton.sk
sk
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | m.tld.sk ⭐ | ||||||
| NS | e.tld.sk | ||||||
| NS | f.tld.sk | ||||||
| NS | g.tld.sk | ||||||
| NS | h.tld.sk | ||||||
| SOA | m.tld.skhostmaster@sk-nic.sk serial=2018578728 | ||||||
Same first word
Similar names
DNS History
16 records (12 active, 4 former)
●NSns1.nic.sk2026-06-05 → 2026-07-15 · 3 obs
● 2026-06-05 02:31:36
● 2026-07-15 17:12:20
●NSns2.nic.sk2026-06-05 → 2026-07-15 · 3 obs
● 2026-06-05 02:31:36
● 2026-07-15 17:12:20
●NSns3.nic.sk2026-06-05 → 2026-07-15 · 3 obs
● 2026-06-05 02:31:36
● 2026-07-15 17:12:20
●NSns4.nic.sk2026-06-05 → 2026-07-15 · 3 obs
● 2026-06-05 02:31:36
● 2026-07-15 17:12:20
○MXmail-relay2.nic.sk2015-06-05 → 2017-04-10 · 4 obs
● 2017-04-10 15:26:38
○ 2026-06-05 02:31:36
○ 2026-07-15 17:12:20
○MXmail-relay3.nic.sk2015-06-05 → 2017-04-10 · 4 obs
● 2017-04-10 15:26:38
○ 2026-06-05 02:31:36
○ 2026-07-15 17:12:20
○MXmailhub.ltc.sk2015-06-05 → 2017-04-10 · 4 obs
● 2017-04-10 15:26:38
○ 2026-06-05 02:31:36
○ 2026-07-15 17:12:20
●MXmailin.mx-hub.cz2026-06-05 → 2026-07-15 · 3 obs
● 2026-06-05 02:31:36
● 2026-07-15 17:12:20
●MXmailin.mx-hub.eu2026-06-05 → 2026-07-15 · 3 obs
● 2026-06-05 02:31:36
● 2026-07-15 17:12:20
●MXmailin.mx-hub.net2026-06-05 → 2026-07-15 · 3 obs
● 2026-06-05 02:31:36
● 2026-07-15 17:12:20
●MXmailin.mx-hub.sk2026-06-05 → 2026-07-15 · 3 obs
● 2026-06-05 02:31:36
● 2026-07-15 17:12:20
●A212.57.32.622026-06-05 → 2026-07-15 · 3 obs
● 2026-06-05 02:31:36
● 2026-07-15 17:12:20
○A81.89.56.322015-06-05 → 2017-04-10 · 4 obs
● 2017-04-10 15:26:38
○ 2026-06-05 02:31:36
○ 2026-07-15 17:12:20
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| sk | e.tld.sk, f.tld.sk, g.tld.sk, h.tld.sk | - |
| proton.sk | ns1.nic.sk, ns2.nic.sk, ns3.nic.sk, ns4.nic.sk | 8 records |
✅ Authoritative Response
Server:217.31.48.201
NS records: ns1.nic.sk, ns2.nic.sk, ns3.nic.sk, ns4.nic.sk
🔒 DNSSEC Status
🔐 Secure (DNSSEC validated)
Chain of trust verified from root to domain
⏱️ Timing
Total: 606ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 212.57.32.62 |
| NS | 3 | ns1.ltc.sk, ns.ltc.sk... |
| MX | 4 | mailin.mx-hub.cz (pri: 10), mailin.mx-hub.eu (pri: 10)... |
| TXT | 2 | v=spf1 a mx include:_spf.nichosting.sk ?, v=spf2.0/mfrom,pra +a +mx include:_spf2. |
| SOA | 1 | ns2.ltc.sk postmaster.nic.sk |
📌 Glue Records Collected
Total: 8
Out-of-bailiwick: 8 (ns1.nic.sk, ns1.nic.sk, ns2.nic.sk...)
Analysis
IP Addresses
proton.sk has exactly one IP address — 212.57.32.62.
ultraprint.cz, labomont.sk, pbmanagement.sk plus two other host names have IP numbers in common with proton.sk.
Name Servers
proton.sk has 7 name servers — ns1.ltc.sk, ns2.ltc.sk, ns.ltc.sk and 4 others.
The name servers of proton.sk overlap at least partially with those of other domains — among them ersa.sk, zastupitelstvo.sk, listovehnojiva.sk and two more.
These name servers tend to appear together with the name servers ns1.nic.sk, ns2.nic.sk and ns3.nic.sk, plus two others.
Host names pointing to two IP addresses:
ns1.nic.sk resolves to 185.65.223.35 and 2a00:1e40:a:53::5.
ns2.nic.sk resolves to 217.31.48.201 and 2001:1ab0:7e1e:2::5.
ns3.nic.sk resolves to 178.62.60.201 and 2a03:b0c0:1:d0::1090:2001.
ns4.nic.sk resolves to 185.65.223.35 and 2a00:1e40:a:53::5.
Host names resolving to a single IP address:
ns1.ltc.sk resolves to 185.65.223.35.
ns2.ltc.sk resolves to 217.31.48.201.
ns.ltc.sk resolves to 185.65.223.35.
The host names ns1.nic.sk and ns4.nic.sk both resolve to 2a00:1e40:a:53::5 IP addresses.
The following host names resolve to 185.65.223.35: ns1.nic.sk, ns4.nic.sk, ns1.ltc.sk and ns.ltc.sk.
The host names ns2.nic.sk and ns2.ltc.sk both resolve to 217.31.48.201 IP addresses.
Mail Servers
The four mail servers for proton.sk are mailin.mx-hub.cz, mailin.mx-hub.eu, mailin.mx-hub.net and mailin.mx-hub.sk.
At least some of the mail servers used by proton.sk are shared with other domains: cee.sk, stomatologbratislava.sk, iorsr.sk and two others among them.
Each of the four hosts mailin.mx-hub.cz, mailin.mx-hub.eu, mailin.mx-hub.net and mailin.mx-hub.sk has two IP addresses. mailin.mx-hub.cz points to 130.193.14.152 and 2001:1ab0:7e1f:1::1:3. mailin.mx-hub.eu points to 130.193.14.153 and 2001:1ab0:7e1f:1::1:4. mailin.mx-hub.net points to 185.102.21.54 and 2001:880:0:15::177. mailin.mx-hub.sk points to 185.102.21.195 and 2001:880:0:15::60.