ctfda.com - dns.ninja
ctfda.com
| DNSSEC | β οΈ Not signed | ||||||
| A | 2606:4700:3031::ac43:9ca6πΊπΈ Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US β In HTTPS hints | ||||||
| A | 2606:4700:3035::6815:5a7fπΊπΈ Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US β In HTTPS hints | ||||||
| A | 104.21.90.127Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US β In HTTPS hints | ||||||
| A | 172.67.156.166πΊπΈ Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US β In HTTPS hints | ||||||
| NS | hope.ns.cloudflare.com β | ||||||
| A | 2606:4700:50::adf5:3aa3πΊπΈ Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | hope.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c0a3π¨π· Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | hope.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:20a3πΊπΈ Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | hope.ns.cloudflare.com | ||||||
| A | 108.162.192.163πΊπΈ Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | hope.ns.cloudflare.com | ||||||
| A | 172.64.32.163πΊπΈ Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | hope.ns.cloudflare.com | ||||||
| A | 173.245.58.163πΊπΈ Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | hope.ns.cloudflare.com | ||||||
| NS | kurt.ns.cloudflare.com | ||||||
| A | 2606:4700:58::adf5:3bc1πΊπΈ Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | kurt.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c1c1π¨π· Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | kurt.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:21c1πΊπΈ Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | kurt.ns.cloudflare.com | ||||||
| A | 108.162.193.193πΊπΈ Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | kurt.ns.cloudflare.com | ||||||
| A | 172.64.33.193πΊπΈ Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | kurt.ns.cloudflare.com | ||||||
| A | 173.245.59.193πΊπΈ Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | kurt.ns.cloudflare.com | ||||||
| TXT | google-site-verification=pWfzuqGIlGsY9GynVoLCWd98Bglx2vOzOrGXPQeyOsA | ||||||
| HTTPS | HTTP/3, HTTP/2 β hints match | ||||||
| IPv4 hints | 104.21.90.127, 172.67.156.166 | ||||||
| IPv6 hints | 2606:4700:3031::ac43:9ca6, 2606:4700:3035::6815:5a7f | ||||||
| ECH | X25519, HKDF-SHA256 + AES-128-GCM draft, id=193, name=cloudflare-ech.com | ||||||
| SOA | hope.ns.cloudflare.comdns@cloudflare.com serial=2409710267 | ||||||
com
| DNSSEC | π Signed (DS record present) | ||||||
| NS | a.gtld-servers.net β | ||||||
| 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=1785785262 | ||||||
rank #87031 in the tld
WOT: SAFE (34/100)
π Tranco rank: #724,485
Previously MX for
ctfda.com |
Same first word
Similar names
DNS History
16 records (6 active, 10 former)
βNSdns1.f1.com.tw2015-07-12 β 2017-02-08 Β· 4 obs
β 2017-02-08 12:20:18
β 2026-02-23 21:24:20
β 2026-08-03 19:54:52
βNSdns2.f1.com.tw2015-07-12 β 2017-02-08 Β· 4 obs
β 2017-02-08 12:20:18
β 2026-02-23 21:24:20
β 2026-08-03 19:54:52
βNShope.ns.cloudflare.com2026-02-23 β 2026-08-03 Β· 3 obs
β 2026-02-23 21:24:20
β 2026-08-03 19:54:52
βNSkurt.ns.cloudflare.com2026-02-23 β 2026-08-03 Β· 3 obs
β 2026-02-23 21:24:20
β 2026-08-03 19:54:52
βMXctfda.com2015-07-12 β 2017-02-08 Β· 4 obs
β 2017-02-08 12:20:18
β 2026-02-23 21:24:20
β 2026-08-03 19:54:52
βMXwww.ctfda.com2015-07-12 β 2017-02-08 Β· 4 obs
β 2017-02-08 12:20:18
β 2026-02-23 21:24:20
β 2026-08-03 19:54:52
βA104.21.90.1272026-02-23 β 2026-08-03 Β· 6 obs
β 2026-02-23 21:24:20
β 2026-05-04 12:43:10
β 2026-05-18 04:14:40
β 2026-05-20 13:05:10
β 2026-08-03 19:54:52
βA172.67.156.1662026-02-23 β 2026-08-03 Β· 6 obs
β 2026-02-23 21:24:20
β 2026-05-04 12:43:10
β 2026-05-18 04:14:40
β 2026-05-20 13:05:10
β 2026-08-03 19:54:52
βA188.114.96.02026-05-18 β 2026-05-18 Β· 5 obs
β 2026-05-04 12:43:10
β 2026-05-18 04:14:40
β 2026-05-20 13:05:10
β 2026-08-03 19:54:52
βA188.114.97.02026-05-18 β 2026-05-18 Β· 5 obs
β 2026-05-04 12:43:10
β 2026-05-18 04:14:40
β 2026-05-20 13:05:10
β 2026-08-03 19:54:52
βA2606:4700:3031::ac43:9ca62026-02-23 β 2026-08-03 Β· 6 obs
β 2026-02-23 21:24:20
β 2026-05-04 12:43:10
β 2026-05-18 04:14:40
β 2026-05-20 13:05:10
β 2026-08-03 19:54:52
βA2606:4700:3033::6815:5a7f2026-02-23 β 2026-05-20 Β· 6 obs
β 2026-02-23 21:24:20
β 2026-05-04 12:43:10
β 2026-05-18 04:14:40
β 2026-05-20 13:05:10
β 2026-08-03 19:54:52
βA2606:4700:3035::6815:5a7f2026-08-03 β 2026-08-03 Β· 2 obs
β 2026-08-03 19:54:52
βA2a06:98c1:3120::2026-05-18 β 2026-05-18 Β· 5 obs
β 2026-05-04 12:43:10
β 2026-05-18 04:14:40
β 2026-05-20 13:05:10
β 2026-08-03 19:54:52
βA2a06:98c1:3121::2026-05-18 β 2026-05-18 Β· 5 obs
β 2026-05-04 12:43:10
β 2026-05-18 04:14:40
β 2026-05-20 13:05:10
β 2026-08-03 19:54:52
βA61.31.226.2362015-07-12 β 2017-02-08 Β· 4 obs
β 2017-02-08 12:20:18
β 2026-02-23 21:24:20
β 2026-08-03 19:54:52
π DNS Trace
π Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | e.gtld-servers.net, l.gtld-servers.net, d.gtld-servers.net, h.gtld-servers.net... | - |
| ctfda.com | hope.ns.cloudflare.com, kurt.ns.cloudflare.com | 12 records |
β Authoritative Response
Server:108.162.193.193
NS records: hope.ns.cloudflare.com, kurt.ns.cloudflare.com
π DNSSEC Status
β οΈ Insecure (no DNSSEC)
No DS record for ctfda.com (unsigned zone)
β±οΈ Timing
Total: 115ms | Queries: -
π Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 172.67.156.166, 104.21.90.127 |
| AAAA | 2 | 2606:4700:3031::ac43:9ca6, 2606:4700:3035::6815:5a7f |
| NS | 2 | hope.ns.cloudflare.com, kurt.ns.cloudflare.com |
| TXT | 1 | google-site-verification=pWfzuqGIlGsY9Gy |
| HTTPS | 1 | {"priority":1,"target":".","alpn":["h3", |
| SOA | 1 | hope.ns.cloudflare.com dns.cloudflare.co |
π Glue Records Collected
Total: 12
Out-of-bailiwick: 12 (hope.ns.cloudflare.com, hope.ns.cloudflare.com, hope.ns.cloudflare.com...)
Analysis
IP Addresses
ctfda.com directs to four IP numbers, which are 104.21.90.127, 172.67.156.166, 2606:4700:3031::ac43:9ca6 and 2606:4700:3035::6815:5a7f.
Two other host names, along with courageworks.com, xcyma.ogmvcakub.com and streamncd.net, also share IP numbers with ctfda.com.
Name Servers
DNS delegation for ctfda.com points to two name servers: hope.ns.cloudflare.com and kurt.ns.cloudflare.com.
ctfda.com shares its NS records with other domains, for example gdham.com, jobmal.com, fafa444.com and two others.
The name servers of ctfda.com overlap at least partially with those of other domains β among them hstnkyy.com, 7bongvn.co, thermoplasticcoating.com and two more.
These name servers commonly co-occur with the name servers anuj.ns.cloudflare.com, miki.ns.cloudflare.com, jocelyn.ns.cloudflare.com and bill.ns.cloudflare.com.
DNS names with 6 IP addresses:
hope.ns.cloudflare.com has IP addresses 108.162.192.163, 172.64.32.163 and 173.245.58.163, plus 3 other.
kurt.ns.cloudflare.com has IP addresses 108.162.193.193, 172.64.33.193 and 173.245.59.193, plus 3 other.