pagespeed.cz - robtex.com
pagespeed.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=1784330242 | ||||||
Same first word
Similar names
DNS History
15 records (11 active, 4 former)
●NSns1.vercel-dns-2.com2026-07-17 → 2026-07-17 · 2 obs
● 2026-07-17 23:45:28
●NSns1.vercel-dns.com2026-07-17 → 2026-07-17 · 2 obs
● 2026-07-17 23:45:28
●NSns2.vercel-dns-2.com2026-07-17 → 2026-07-17 · 2 obs
● 2026-07-17 23:45:28
●NSns2.vercel-dns.com2026-07-17 → 2026-07-17 · 2 obs
● 2026-07-17 23:45:28
●MXalt1.aspmx.l.google.com2026-07-17 → 2026-07-17 · 2 obs
● 2026-07-17 23:45:28
●MXalt2.aspmx.l.google.com2026-07-17 → 2026-07-17 · 2 obs
● 2026-07-17 23:45:28
●MXalt3.aspmx.l.google.com2026-07-17 → 2026-07-17 · 2 obs
● 2026-07-17 23:45:28
●MXalt4.aspmx.l.google.com2026-07-17 → 2026-07-17 · 2 obs
● 2026-07-17 23:45:28
●MXaspmx.l.google.com2026-07-17 → 2026-07-17 · 2 obs
● 2026-07-17 23:45:28
○A216.150.1.12026-07-17 → 2026-07-17 · 3 obs
● 2026-07-17 13:45:18
○ 2026-07-17 23:45:28
○A216.150.1.1292026-07-17 → 2026-07-17 · 3 obs
○ 2026-07-17 13:45:18
○ 2026-07-17 23:45:28
○A216.150.1.1932026-07-17 → 2026-07-17 · 3 obs
○ 2026-07-17 13:45:18
○ 2026-07-17 23:45:28
○A216.150.1.652026-07-17 → 2026-07-17 · 3 obs
● 2026-07-17 13:45:18
○ 2026-07-17 23:45:28
●A216.150.16.12026-07-17 → 2026-07-17 · 2 obs
● 2026-07-17 23:45:28
●A216.150.16.1292026-07-17 → 2026-07-17 · 2 obs
● 2026-07-17 23:45:28
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cz | c.ns.nic.cz, d.ns.nic.cz, a.ns.nic.cz, b.ns.nic.cz | - |
| pagespeed.cz | ns1.vercel-dns.com, ns2.vercel-dns.com | - |
✅ Authoritative Response
Server:198.51.44.13
NS records: ns1.vercel-dns.com, ns2.vercel-dns.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for pagespeed.cz (unsigned zone)
⏱️ Timing
Total: 741ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 216.150.1.193, 216.150.16.1 |
| NS | 2 | ns1.vercel-dns-2.com, ns2.vercel-dns-2.com |
| MX | 5 | aspmx.l.google.com (pri: 1), alt3.aspmx.l.google.com (pri: 10)... |
| TXT | 5 | google-site-verification=7anQbm1-1vUaXEv, google-site-verification=QaGcOqqmIB0zc1K... |
| SOA | 1 | ns1.vercel-dns-2.com hostmaster.nsone.ne |
Analysis
IP Addresses
pagespeed.cz has two IP addresses: 216.150.16.1 and 216.150.16.129
4025.tech, trez-en.created.app, smilesclinic.ca plus two other host names have IP numbers in common with pagespeed.cz.
Name Servers
Four name servers handle the delegation for pagespeed.cz: ns1.vercel-dns-2.com, ns2.vercel-dns-2.com, ns1.vercel-dns.com and ns2.vercel-dns.com.
There is at least partial name server overlap between pagespeed.cz and other domains — anthonyarellano.com, ora.run, citw.dev and two more among them.
These name servers are routinely deployed together with the name servers dns1.p13.nsone.net.
Four hosts, each with two IP addresses: ns1.vercel-dns-2.com and ns1.vercel-dns.com point to 198.51.44.13 and 2620:4d:4000:6259:7:13:0:1; ns2.vercel-dns-2.com and ns2.vercel-dns.com point to 198.51.45.13 and 2a00:edc0:6259:7:13::2.
The host names ns1.vercel-dns-2.com and ns1.vercel-dns.com both resolve to 2620:4d:4000:6259:7:13:0:1 IP addresses.
The host names ns1.vercel-dns-2.com and ns1.vercel-dns.com both resolve to 198.51.44.13 IP addresses.
The host names ns2.vercel-dns-2.com and ns2.vercel-dns.com both resolve to 2a00:edc0:6259:7:13::2 IP addresses.
The host names ns2.vercel-dns-2.com and ns2.vercel-dns.com both resolve to 198.51.45.13 IP addresses.
Mail Servers
Five mail servers handle pagespeed.cz: aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com and two others.
At least some of the mail servers used by pagespeed.cz are shared with other domains: ns500699.ns500699.ns500693.ns500699.ns500693.ns500693.ns500588.ns500693.ns500588.ns500588.ns500612.ns500612.ns500588.ns500588.dtrkdll.com, ns500759.ns500698.ns500758.ns500759.ns500698.ns500698.ns500736.ns500736.ns500736.ns500736.ns500735.ns500735.ns500708.ns500576.ns500619.ns500576.trackreceptor.com, ns500754.ns500671.ns500754.ns500671.ns500742.ns500731.ns500731.ns500704.ns500705.ns500671.ns500678.ns500678.ns500649.ns500649.ns500666.ns500142.lusty(0x736c7574)z.com and two others among them.
These mail servers are often deployed together with alt3.aspmx.l.google.com, alt4.aspmx.l.google.com, aspmx2.googlemail.com and 5 other mail servers.
Host names pointing to two IP addresses:
aspmx.l.google.com resolves to 172.253.63.26 and 2607:f8b0:4004:c23::1b.
alt1.aspmx.l.google.com resolves to 108.177.123.27 and 2800:3f0:4003:c0f::1b.
alt2.aspmx.l.google.com resolves to 172.253.116.26 and 2a00:1450:400b:c02::1b.
alt3.aspmx.l.google.com resolves to 192.178.223.26 and 2a00:1450:4009:c0f::1b.
alt4.aspmx.l.google.com resolves to 172.253.157.27 and 2a00:1450:400c:c23::1a.