isthc.pl - robtex.com
isthc.pl
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2606:4700:3030::ac43:a298🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 2606:4700:3034::6815:f79🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 104.21.15.121Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 172.67.162.152🇺🇸 Cloudflare172.67.160.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| NS | gerald.ns.cloudflare.com ⭐ | ||||||
| A | 2606:4700:58::adf5:3ba8🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | gerald.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c1a8🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | gerald.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:21a8🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | gerald.ns.cloudflare.com | ||||||
| A | 108.162.193.168🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | gerald.ns.cloudflare.com | ||||||
| A | 172.64.33.168🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | gerald.ns.cloudflare.com | ||||||
| A | 173.245.59.168🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | gerald.ns.cloudflare.com | ||||||
| NS | lucy.ns.cloudflare.com | ||||||
| A | 2606:4700:50::adf5:3a85🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | lucy.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c085🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | lucy.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:2085🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | lucy.ns.cloudflare.com | ||||||
| A | 108.162.192.133🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | lucy.ns.cloudflare.com | ||||||
| A | 172.64.32.133🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | lucy.ns.cloudflare.com | ||||||
| A | 173.245.58.133🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | lucy.ns.cloudflare.com | ||||||
| HTTPS | HTTP/3, HTTP/2 ✓ hints match | ||||||
| IPv4 hints | 104.21.15.121, 172.67.162.152 | ||||||
| IPv6 hints | 2606:4700:3030::ac43:a298, 2606:4700:3034::6815:f79 | ||||||
| ECH | X25519, HKDF-SHA256 + AES-128-GCM draft, id=114, name=cloudflare-ech.com | ||||||
| SOA | gerald.ns.cloudflare.comdns@cloudflare.com serial=2403475740 | ||||||
pl
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a-dns.pl ⭐ | ||||||
| NS | b-dns.pl | ||||||
| NS | d-dns.pl | ||||||
| NS | f-dns.pl | ||||||
| NS | h-dns.pl | ||||||
| NS | j-dns.pl | ||||||
| TXT | ccTLD of Poland | ||||||
| SOA | a-dns.pldnsmaster@nask.pl serial=1778308449 | ||||||
Same first word
isthc.pl |
Similar names
DNS History
6 records (6 active, 0 former)
●NSgerald.ns.cloudflare.com2026-04-20 → 2026-05-10 · 2 obs
● 2026-05-10 02:55:38
●NSlucy.ns.cloudflare.com2026-04-20 → 2026-05-10 · 2 obs
● 2026-05-10 02:55:38
●A104.21.15.1212026-04-20 → 2026-05-10 · 2 obs
● 2026-05-10 02:55:38
●A172.67.162.1522026-04-20 → 2026-05-10 · 2 obs
● 2026-05-10 02:55:38
●A2606:4700:3030::ac43:a2982026-04-20 → 2026-05-10 · 2 obs
● 2026-05-10 02:55:38
●A2606:4700:3034::6815:f792026-04-20 → 2026-05-10 · 2 obs
● 2026-05-10 02:55:38
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| pl | j-dns.pl, h-dns.pl, a-dns.pl, d-dns.pl... | - |
| isthc.pl | lucy.ns.cloudflare.com, gerald.ns.cloudflare.com | - |
✅ Authoritative Response
Server:172.64.32.133
NS records: lucy.ns.cloudflare.com, gerald.ns.cloudflare.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for isthc.pl (unsigned zone)
⏱️ Timing
Total: 608ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 172.67.162.152, 104.21.15.121 |
| AAAA | 2 | 2606:4700:3034::6815:f79, 2606:4700:3030::ac43:a298 |
| NS | 2 | gerald.ns.cloudflare.com, lucy.ns.cloudflare.com |
| HTTPS | 1 | {"priority":1,"target":".","alpn":["h3", |
| SOA | 1 | gerald.ns.cloudflare.com dns.cloudflare. |
Analysis
IP Addresses
isthc.pl maps to four IP numbers: 2606:4700:3030::ac43:a298, 2606:4700:3034::6815:f79, 104.21.15.121 and 172.67.162.152.
Other host names, for instance nu.varsityadmission.com, www.panoramaplitki.ru, gay(0x706f726e)o.casa, panoramaplitki.ru and betsson-gr.org share IP numbers with isthc.pl.
Name Servers
Two name servers gerald.ns.cloudflare.com and lucy.ns.cloudflare.com are delegated to isthc.pl.
isthc.pl uses the same name server configuration as other domains, such as cacesa.com.py, anipr.com, cloudyz(0x736578)y.com, makatiexpress.com and atchfactory.com.
isthc.pl at least partially shares name servers with other domains such as spheraapartments.com, aknetakademi.com, gunrunnergundogs.com, iletisimemlak.com and flexitrent.com.
these name servers are commonly used with the name servers sharon.ns.cloudflare.com.
Host names with six IP numbers: Host name gerald.ns.cloudflare.com points to 2606:4700:58::adf5:3ba8, 2803:f800:50::6ca2:c1a8, 2a06:98c1:50::ac40:21a8, 108.162.193.168, 172.64.33.168 and 173.245.59.168; host name lucy.ns.cloudflare.com points to 2606:4700:50::adf5:3a85, 2803:f800:50::6ca2:c085, 2a06:98c1:50::ac40:2085, 108.162.192.133, 172.64.32.133 and 173.245.58.133.