startheory.org - robtex.com
startheory.org
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2606:4700:3037::6815:5cb7🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 2606:4700:3037::ac43:c518🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 104.21.92.183Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 172.67.197.24🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| NS | anuj.ns.cloudflare.com ⭐ | ||||||
| A | 2606:4700:58::adf5:3b41🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | anuj.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c141🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | anuj.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:2141🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | anuj.ns.cloudflare.com | ||||||
| A | 108.162.193.65🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | anuj.ns.cloudflare.com | ||||||
| A | 172.64.33.65🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | anuj.ns.cloudflare.com | ||||||
| A | 173.245.59.65🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | anuj.ns.cloudflare.com | ||||||
| NS | bonnie.ns.cloudflare.com | ||||||
| A | 2606:4700:50::adf5:3a4c🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | bonnie.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c04c🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | bonnie.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:204c🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | bonnie.ns.cloudflare.com | ||||||
| A | 108.162.192.76🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | bonnie.ns.cloudflare.com | ||||||
| A | 172.64.32.76🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | bonnie.ns.cloudflare.com | ||||||
| A | 173.245.58.76🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | bonnie.ns.cloudflare.com | ||||||
| MX | startheory-org.mail.protection.outlook.com ⭐ | ||||||
| TXT | MS=ms49286817 | ||||||
| TXT | v=spf1 include:spf.protection.outlook.com -all | ||||||
| HTTPS | HTTP/3, HTTP/2 ✓ hints match | ||||||
| IPv4 hints | 104.21.92.183, 172.67.197.24 | ||||||
| IPv6 hints | 2606:4700:3037::6815:5cb7, 2606:4700:3037::ac43:c518 | ||||||
| ECH | X25519, HKDF-SHA256 + AES-128-GCM draft, id=73, name=cloudflare-ech.com | ||||||
| SOA | anuj.ns.cloudflare.comdns@cloudflare.com serial=2399908355 | ||||||
org
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a0.org.afilias-nst.info ⭐ ⚠️ Not in parent delegation | ||||||
| NS | a2.org.afilias-nst.info ⚠️ Not in parent delegation | ||||||
| NS | b0.org.afilias-nst.org | ||||||
| NS | b2.org.afilias-nst.org | ||||||
| NS | c0.org.afilias-nst.info ⚠️ Not in parent delegation | ||||||
| NS | d0.org.afilias-nst.org | ||||||
| SOA | a0.org.afilias-nst.infohostmaster@donuts.email serial=1775985996 | ||||||
Same first word
startheory.net |
startheory.org |
Similar names
DNS History
7 records (7 active, 0 former)
●NSanuj.ns.cloudflare.com2026-02-18 → 2026-04-12 · 2 obs
● 2026-04-12 09:50:08
●NSbonnie.ns.cloudflare.com2026-02-18 → 2026-04-12 · 2 obs
● 2026-04-12 09:50:08
●MXstartheory-org.mail.protection.outlook.com2026-02-18 → 2026-04-12 · 2 obs
● 2026-04-12 09:50:08
●A104.21.92.1832026-02-18 → 2026-04-12 · 2 obs
● 2026-04-12 09:50:08
●A172.67.197.242026-02-18 → 2026-04-12 · 2 obs
● 2026-04-12 09:50:08
●A2606:4700:3037::6815:5cb72026-02-18 → 2026-04-12 · 2 obs
● 2026-04-12 09:50:08
●A2606:4700:3037::ac43:c5182026-02-18 → 2026-04-12 · 2 obs
● 2026-04-12 09:50:08
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| org | b0.org.afilias-nst.org, b2.org.afilias-nst.org, d0.org.afilias-nst.org | - |
| startheory.org | bonnie.ns.cloudflare.com, anuj.ns.cloudflare.com | - |
✅ Authoritative Response
Server:108.162.193.65
NS records: bonnie.ns.cloudflare.com, anuj.ns.cloudflare.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for startheory.org (unsigned zone)
⏱️ Timing
Total: 500ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 172.67.197.24, 104.21.92.183 |
| AAAA | 2 | 2606:4700:3037::ac43:c518, 2606:4700:3037::6815:5cb7 |
| NS | 2 | anuj.ns.cloudflare.com, bonnie.ns.cloudflare.com |
| MX | 1 | startheory-org.mail.protection.outlook.c |
| TXT | 2 | MS=ms49286817, v=spf1 include:spf.protection.outlook.co |
| HTTPS | 1 | {"priority":1,"target":".","alpn":["h3", |
| SOA | 1 | anuj.ns.cloudflare.com dns.cloudflare.co |
Analysis
IP Addresses
startheory.org maps to four IP numbers: 2606:4700:3037::6815:5cb7, 2606:4700:3037::ac43:c518, 104.21.92.183 and 172.67.197.24.
Other host names such as zzswb-love.com, www.mijntrouwplanning.be, www.asiaalu.com.cn, schippersitalia.it and mail.lumberjacksystem.com share IPs with startheory.org.
Name Servers
Two name servers anuj.ns.cloudflare.com and bonnie.ns.cloudflare.com handle the delegation for startheory.org.
startheory.org shares the same name server setup as other domains, for example taolearning.org, maxautoshop.com, taomusichouse.com, chovatelia-ipd.sk and steamhive.com.
startheory.org at least partially shares name servers with other domains, for example 19cornwallstreet.com, jifihia9.pro, wideurl.com, hezyjoi6.pro and gibiancotattoo.pt.
These name servers are often used together with aragorn.ns.cloudflare.com and lars.ns.cloudflare.com.
Host names with six IP numbers:
anuj.ns.cloudflare.com points to 2606:4700:58::adf5:3b41, 2803:f800:50::6ca2:c141, 2a06:98c1:50::ac40:2141, 108.162.193.65, 172.64.33.65 and 173.245.59.65.
bonnie.ns.cloudflare.com points to 2606:4700:50::adf5:3a4c, 2803:f800:50::6ca2:c04c, 2a06:98c1:50::ac40:204c, 108.162.192.76, 172.64.32.76 and 173.245.58.76.
Mail Servers
The startheory-org.mail.protection.outlook.com mail server handles startheory.org.