tzfcsk.com - robtex.com
tzfcsk.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2606:4700:3030::6815:4907🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 2606:4700:3037::ac43:88e7🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 104.21.73.7Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 172.67.136.231🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| NS | aspen.ns.cloudflare.com ⭐ | ||||||
| A | 2606:4700:50::a29f:266d🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | aspen.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c26d🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | aspen.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:226d🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | aspen.ns.cloudflare.com | ||||||
| A | 108.162.194.109🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | aspen.ns.cloudflare.com | ||||||
| A | 162.159.38.109Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | aspen.ns.cloudflare.com | ||||||
| A | 172.64.34.109🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | aspen.ns.cloudflare.com | ||||||
| NS | nash.ns.cloudflare.com 🔒 | ||||||
| A | 2606:4700:58::adf5:3bd1🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | nash.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c1d1🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | nash.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:21d1🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | nash.ns.cloudflare.com | ||||||
| A | 108.162.193.209🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | nash.ns.cloudflare.com | ||||||
| A | 172.64.33.209🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | nash.ns.cloudflare.com | ||||||
| A | 173.245.59.209🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | nash.ns.cloudflare.com | ||||||
| HTTPS | HTTP/3, HTTP/2 ✓ hints match | ||||||
| IPv4 | 104.21.73.7, 172.67.136.231 | ||||||
| IPv6 | 2606:4700:3030::6815:4907, 2606:4700:3037::ac43:88e7 | ||||||
| SOA | aspen.ns.cloudflare.comdns@cloudflare.com serial=2395612057 | ||||||
com
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.gtld-servers.net ⭐ | ||||||
| NS | b.gtld-servers.net | ||||||
| NS | c.gtld-servers.net | ||||||
| NS | d.gtld-servers.net | ||||||
| NS | e.gtld-servers.net | ||||||
| NS | f.gtld-servers.net | ||||||
| NS | g.gtld-servers.net | ||||||
| NS | h.gtld-servers.net | ||||||
| NS | i.gtld-servers.net | ||||||
| NS | j.gtld-servers.net | ||||||
| NS | k.gtld-servers.net | ||||||
| NS | l.gtld-servers.net | ||||||
| NS | m.gtld-servers.net | ||||||
| SOA | a.gtld-servers.netnstld@verisign-grs.com serial=1771291435 | ||||||
Same first word
tzfcsk.com |
Similar names
DNS History
14 records (6 active, 8 former)
●NSaspen.ns.cloudflare.com2026-02-26 → 2026-02-26 · 2 obs
● 2026-02-26 22:09:38
○NSdns1.3366dns.com2015-12-27 → 2017-04-04 · 4 obs
● 2015-12-27 19:22:16
● 2017-04-04 09:28:50
○ 2026-02-26 22:09:38
●NSnash.ns.cloudflare.com2026-02-26 → 2026-02-26 · 2 obs
● 2026-02-26 22:09:38
○NStzfcsk.com2015-08-11 → 2017-04-04 · 3 obs
● 2017-04-04 09:28:50
○ 2026-02-26 22:09:38
○MXmail.3366dns.com2015-08-11 → 2017-04-04 · 3 obs
● 2017-04-04 09:28:50
○ 2026-02-26 22:09:38
●A104.21.73.72026-02-26 → 2026-02-26 · 2 obs
● 2026-02-26 22:09:38
●A172.67.136.2312026-02-26 → 2026-02-26 · 2 obs
● 2026-02-26 22:09:38
○A188.114.96.02026-02-26 → 2026-02-26 · 1 obs
○A188.114.97.02026-02-26 → 2026-02-26 · 1 obs
○A218.85.134.2012015-08-11 → 2017-04-04 · 3 obs
● 2017-04-04 09:28:50
○ 2026-02-26 22:09:38
●A2606:4700:3030::6815:49072026-02-26 → 2026-02-26 · 2 obs
● 2026-02-26 22:09:38
●A2606:4700:3037::ac43:88e72026-02-26 → 2026-02-26 · 2 obs
● 2026-02-26 22:09:38
○A2a06:98c1:3120::2026-02-26 → 2026-02-26 · 1 obs
○A2a06:98c1:3121::2026-02-26 → 2026-02-26 · 1 obs
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | b.gtld-servers.net, m.gtld-servers.net, l.gtld-servers.net, k.gtld-servers.net... | - |
| tzfcsk.com | nash.ns.cloudflare.com, aspen.ns.cloudflare.com | 12 records |
✅ Authoritative Response
Server: 108.162.193.209
NS records: nash.ns.cloudflare.com, aspen.ns.cloudflare.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for tzfcsk.com (unsigned zone)
⏱️ Timing
Total: 359ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 104.21.73.7, 172.67.136.231 |
| AAAA | 2 | 2606:4700:3037::ac43:88e7, 2606:4700:3030::6815:4907 |
| NS | 2 | aspen.ns.cloudflare.com, nash.ns.cloudflare.com |
| HTTPS | 1 | {"priority":1,"target":".","alpn":["h3", |
| SOA | 1 | aspen.ns.cloudflare.com dns.cloudflare.c |
📌 Glue Records Collected
Total: 12
Out-of-bailiwick: 12 (nash.ns.cloudflare.com, nash.ns.cloudflare.com, nash.ns.cloudflare.com...)
AI analysis
tzfcsk.com refers to four IP numbers: 2606:4700:3030::6815:4907, 2606:4700:3037::ac43:88e7, 104.21.73.7 and 172.67.136.231.
Other host names, for instance coreprogression.com, anasci.org, badposting.com, kpartners.gr and hellohost.com share IP numbers with tzfcsk.com.
tzfcsk.com's delegation uses two name servers: aspen.ns.cloudflare.com and nash.ns.cloudflare.com.
tzfcsk.com uses the same name server setup as other domains, such as qczxq.com, ketaigd.com, for-guest.com, btacnps.org and bljcpu.com.
tzfcsk.com at least partially shares name servers with other domains, including xn--72c1aat0cipv2a5qwce.com, eduivy.com, joylin.net, discounttwo-wayradio.com and xmktxstore.com.
These name servers are often used with gordon.ns.cloudflare.com and henry.ns.cloudflare.com.
Host names with six IP numbers:
aspen.ns.cloudflare.com points to 2606:4700:50::a29f:266d, 2803:f800:50::6ca2:c26d, 2a06:98c1:50::ac40:226d, 108.162.194.109, 162.159.38.109 and 172.64.34.109.
nash.ns.cloudflare.com points to 2606:4700:58::adf5:3bd1, 2803:f800:50::6ca2:c1d1, 2a06:98c1:50::ac40:21d1, 108.162.193.209, 172.64.33.209 and 173.245.59.209.