ctfexpo.net - robtex.com
ctfexpo.net
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2606:4700:3031::6815:23c1🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 2606:4700:3035::ac43:b2d9🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 104.21.35.193Cloudflare104.21.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 172.67.178.217🇺🇸 Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| NS | cecelia.ns.cloudflare.com ⭐ | ||||||
| A | 2606:4700:50::a29f:2687🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | cecelia.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c287🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | cecelia.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:2287🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | cecelia.ns.cloudflare.com | ||||||
| A | 108.162.194.135🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | cecelia.ns.cloudflare.com | ||||||
| A | 162.159.38.135Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | cecelia.ns.cloudflare.com | ||||||
| A | 172.64.34.135🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | cecelia.ns.cloudflare.com | ||||||
| NS | dale.ns.cloudflare.com | ||||||
| A | 2606:4700:58::adf5:3b5f🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | dale.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c15f🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | dale.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:215f🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | dale.ns.cloudflare.com | ||||||
| A | 108.162.193.95🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | dale.ns.cloudflare.com | ||||||
| A | 172.64.33.95🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | dale.ns.cloudflare.com | ||||||
| A | 173.245.59.95🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | dale.ns.cloudflare.com | ||||||
| HTTPS | HTTP/3, HTTP/2 ✓ hints match | ||||||
| IPv4 hints | 104.21.35.193, 172.67.178.217 | ||||||
| IPv6 hints | 2606:4700:3031::6815:23c1, 2606:4700:3035::ac43:b2d9 | ||||||
| ECH | X25519, HKDF-SHA256 + AES-128-GCM draft, id=17, name=cloudflare-ech.com | ||||||
| SOA | cecelia.ns.cloudflare.comdns@cloudflare.com serial=2399172412 | ||||||
net
| 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=1777362926 | ||||||
Same first word
ctfexpo.net |
Similar names
DNS History
6 records (6 active, 0 former)
●NScecelia.ns.cloudflare.com2026-04-06 → 2026-04-28 · 2 obs
● 2026-04-28 08:11:32
●NSdale.ns.cloudflare.com2026-04-06 → 2026-04-28 · 2 obs
● 2026-04-28 08:11:32
●A104.21.35.1932026-04-06 → 2026-04-28 · 2 obs
● 2026-04-28 08:11:32
●A172.67.178.2172026-04-06 → 2026-04-28 · 2 obs
● 2026-04-28 08:11:32
●A2606:4700:3031::6815:23c12026-04-06 → 2026-04-28 · 2 obs
● 2026-04-28 08:11:32
●A2606:4700:3035::ac43:b2d92026-04-06 → 2026-04-28 · 2 obs
● 2026-04-28 08:11:32
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| net | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| ctfexpo.net | dale.ns.cloudflare.com, cecelia.ns.cloudflare.com | - |
✅ Authoritative Response
Server:173.245.59.95
NS records: dale.ns.cloudflare.com, cecelia.ns.cloudflare.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for ctfexpo.net (unsigned zone)
⏱️ Timing
Total: 417ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 104.21.35.193, 172.67.178.217 |
| AAAA | 2 | 2606:4700:3031::6815:23c1, 2606:4700:3035::ac43:b2d9 |
| NS | 2 | cecelia.ns.cloudflare.com, dale.ns.cloudflare.com |
| HTTPS | 1 | {"priority":1,"target":".","alpn":["h3", |
| SOA | 1 | cecelia.ns.cloudflare.com dns.cloudflare |
Analysis
IP Addresses
ctfexpo.net resolves to four IP numbers: 2606:4700:3031::6815:23c1, 2606:4700:3035::ac43:b2d9, 104.21.35.193 and 172.67.178.217.
Other host names such as ocgpc.com, splinterswood.com, nearlytrading-hk.com, mcw.co.za and kinghills-play.co.uk share IPs with ctfexpo.net.
Name Servers
ctfexpo.net is delegated to two name servers: cecelia.ns.cloudflare.com and dale.ns.cloudflare.com.
ctfexpo.net shares the same name server setup as hsbochang.com, ruweng.cn, 023qyfs.com, dcstrust.net and hs(0x6469636b).com.
ctfexpo.net at least partially shares name servers with other domains, for instance goldenbrainma.com, dpd-palnexa.click, ai4you.top, 033331.com and toldoslamolina.com.
These name servers are commonly used together with chelsea.ns.cloudflare.com, becky.ns.cloudflare.com and lilyana.ns.cloudflare.com.
Host names with six IP numbers:
cecelia.ns.cloudflare.com points to 2606:4700:50::a29f:2687, 2803:f800:50::6ca2:c287, 2a06:98c1:50::ac40:2287, 108.162.194.135, 162.159.38.135 and 172.64.34.135.
dale.ns.cloudflare.com points to 2606:4700:58::adf5:3b5f, 2803:f800:50::6ca2:c15f, 2a06:98c1:50::ac40:215f, 108.162.193.95, 172.64.33.95 and 173.245.59.95.