study20.online - robtex.com
study20.online
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2606:4700:3031::6815:5b4e🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 2606:4700:3035::ac43:d410🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 104.21.91.78Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 172.67.212.16🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| NS | hans.ns.cloudflare.com ⭐ | ||||||
| A | 2606:4700:58::adf5:3baf🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | hans.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c1af🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | hans.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:21af🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | hans.ns.cloudflare.com | ||||||
| A | 108.162.193.175🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | hans.ns.cloudflare.com | ||||||
| A | 172.64.33.175🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | hans.ns.cloudflare.com | ||||||
| A | 173.245.59.175🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | hans.ns.cloudflare.com | ||||||
| NS | josephine.ns.cloudflare.com | ||||||
| A | 2606:4700:50::a29f:2640🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | josephine.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c240🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | josephine.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:2240🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | josephine.ns.cloudflare.com | ||||||
| A | 108.162.194.64🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | josephine.ns.cloudflare.com | ||||||
| A | 162.159.38.64Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | josephine.ns.cloudflare.com | ||||||
| A | 172.64.34.64🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | josephine.ns.cloudflare.com | ||||||
| HTTPS | HTTP/3, HTTP/2 ✓ hints match | ||||||
| IPv4 hints | 104.21.91.78, 172.67.212.16 | ||||||
| IPv6 hints | 2606:4700:3031::6815:5b4e, 2606:4700:3035::ac43:d410 | ||||||
| ECH | X25519, HKDF-SHA256 + AES-128-GCM draft, id=160, name=cloudflare-ech.com | ||||||
| SOA | hans.ns.cloudflare.comdns@cloudflare.com serial=2409675004 | ||||||
online
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | ns01.trs-dns.com ⭐ | ||||||
| NS | ns.trs-dns.com | ||||||
| NS | ns01.trs-dns.net | ||||||
| NS | ns10.trs-dns.info | ||||||
| NS | ns10.trs-dns.org | ||||||
| SOA | ns.trs-dns.comtrs-ops@tucows.com serial=1785916125 | ||||||
Same first word
DNS History
7 records (6 active, 1 former)
●NShans.ns.cloudflare.com2026-06-12 → 2026-08-05 · 2 obs
● 2026-08-05 07:56:58
●NSjosephine.ns.cloudflare.com2026-06-12 → 2026-08-05 · 2 obs
● 2026-08-05 07:56:58
●A104.21.91.782026-06-12 → 2026-08-05 · 2 obs
● 2026-08-05 07:56:58
●A172.67.212.162026-06-12 → 2026-08-05 · 2 obs
● 2026-08-05 07:56:58
●A2606:4700:3031::6815:5b4e2026-06-22 → 2026-08-05 · 3 obs
● 2026-06-22 09:42:04
● 2026-08-05 07:56:58
●A2606:4700:3035::ac43:d4102026-06-12 → 2026-08-05 · 2 obs
● 2026-08-05 07:56:58
○A2606:4700:3037::6815:5b4e2026-06-12 → 2026-06-12 · 3 obs
○ 2026-06-22 09:42:04
○ 2026-08-05 07:56:58
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| online | ns01.trs-dns.com, ns01.trs-dns.net, ns10.trs-dns.org, ns10.trs-dns.info | 8 records |
| study20.online | hans.ns.cloudflare.com, josephine.ns.cloudflare.com | - |
✅ Authoritative Response
Server:162.159.38.64
NS records: hans.ns.cloudflare.com, josephine.ns.cloudflare.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for study20.online (unsigned zone)
⏱️ Timing
Total: 1235ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 172.67.212.16, 104.21.91.78 |
| AAAA | 2 | 2606:4700:3031::6815:5b4e, 2606:4700:3035::ac43:d410 |
| NS | 2 | hans.ns.cloudflare.com, josephine.ns.cloudflare.com |
| HTTPS | 1 | {"priority":1,"target":".","alpn":["h3", |
| SOA | 1 | hans.ns.cloudflare.com dns.cloudflare.co |
📌 Glue Records Collected
Total: 8
Out-of-bailiwick: 8 (ns01.trs-dns.com, ns01.trs-dns.com, ns01.trs-dns.net...)
Analysis
IP Addresses
study20.online points to the four IP addresses 104.21.91.78, 172.67.212.16, 2606:4700:3031::6815:5b4e and 2606:4700:3035::ac43:d410.
Among the host names that share IP numbers with study20.online are earlylearningleaders.org, mmfromhome.com, 3600716.com.cdn.cloudflare.net and two others.
Name Servers
study20.online uses two name servers for its delegation: hans.ns.cloudflare.com and josephine.ns.cloudflare.com.
study20.online has the same name server delegation as a number of other domains, such as study10.space, study66.online, study30.online and two more.
There is at least partial name server overlap between study20.online and other domains — mouneko.com, vas.claims, monodns.com and two more among them.
These name servers frequently co-occur with the name servers dion.ns.cloudflare.com and ned.ns.cloudflare.com.
Host names resolving to 6 IP numbers:
Hostname hans.ns.cloudflare.com directs to 108.162.193.175, 172.64.33.175 and 173.245.59.175 along with 3 other IP addresses.
Hostname josephine.ns.cloudflare.com directs to 108.162.194.64, 162.159.38.64 and 172.64.34.64 along with 3 other IP addresses.