doublemath.com - robtex.com
doublemath.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2606:4700:3035::6815:4eab🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 2606:4700:3037::ac43:881f🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 104.21.78.171Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 172.67.136.31🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| NS | gwen.ns.cloudflare.com ⭐ | ||||||
| A | 2606:4700:50::adf5:3aa0🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | gwen.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c0a0🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | gwen.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:20a0🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | gwen.ns.cloudflare.com | ||||||
| A | 108.162.192.160🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | gwen.ns.cloudflare.com | ||||||
| A | 172.64.32.160🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | gwen.ns.cloudflare.com | ||||||
| A | 173.245.58.160🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | gwen.ns.cloudflare.com | ||||||
| NS | theo.ns.cloudflare.com | ||||||
| A | 2606:4700:58::adf5:3b90🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | theo.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c190🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | theo.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:2190🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | theo.ns.cloudflare.com | ||||||
| A | 108.162.193.144🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | theo.ns.cloudflare.com | ||||||
| A | 172.64.33.144🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | theo.ns.cloudflare.com | ||||||
| A | 173.245.59.144🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | theo.ns.cloudflare.com | ||||||
| HTTPS | HTTP/3, HTTP/2 ✓ hints match | ||||||
| IPv4 | 104.21.78.171, 172.67.136.31 | ||||||
| IPv6 | 2606:4700:3035::6815:4eab, 2606:4700:3037::ac43:881f | ||||||
| SOA | gwen.ns.cloudflare.comdns@cloudflare.com serial=2396403533 | ||||||
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
doublemath.com |
DNS History
6 records (6 active, 0 former)
●NSgwen.ns.cloudflare.com2026-03-01 → 2026-03-01 · 2 obs
● 2026-03-01 17:11:42
●NStheo.ns.cloudflare.com2026-03-01 → 2026-03-01 · 2 obs
● 2026-03-01 17:11:42
●A104.21.78.1712026-03-01 → 2026-03-01 · 2 obs
● 2026-03-01 17:11:42
●A172.67.136.312026-03-01 → 2026-03-01 · 2 obs
● 2026-03-01 17:11:42
●A2606:4700:3035::6815:4eab2026-03-01 → 2026-03-01 · 2 obs
● 2026-03-01 17:11:42
●A2606:4700:3037::ac43:881f2026-03-01 → 2026-03-01 · 2 obs
● 2026-03-01 17:11:42
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| doublemath.com | theo.ns.cloudflare.com, gwen.ns.cloudflare.com | 12 records |
✅ Authoritative Response
Server: 173.245.59.144
NS records: theo.ns.cloudflare.com, gwen.ns.cloudflare.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for doublemath.com (unsigned zone)
⏱️ Timing
Total: 159ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 172.67.136.31, 104.21.78.171 |
| AAAA | 2 | 2606:4700:3037::ac43:881f, 2606:4700:3035::6815:4eab |
| NS | 2 | gwen.ns.cloudflare.com, theo.ns.cloudflare.com |
| HTTPS | 1 | {"priority":1,"target":".","alpn":["h3", |
| SOA | 1 | gwen.ns.cloudflare.com dns.cloudflare.co |
📌 Glue Records Collected
Total: 12
Out-of-bailiwick: 12 (theo.ns.cloudflare.com, theo.ns.cloudflare.com, theo.ns.cloudflare.com...)
Analysis
IP Addresses
doublemath.com maps to four IP numbers: 2606:4700:3035::6815:4eab, 2606:4700:3037::ac43:881f, 104.21.78.171 and 172.67.136.31.
Other host names such as whiterussian.dk, telefullhd.com, akotzen.com, whmeasybackup.com and www.showervalvesshop.com share IPs with doublemath.com.
Name Servers
Two name servers gwen.ns.cloudflare.com and theo.ns.cloudflare.com handle the delegation for doublemath.com.
doublemath.com shares the same name server setup as other domains, for example moscow4rent.com, centralfallout.com, robertgraypoetry.com, prettypistolaccessories.com and basenji-club.com.
doublemath.com at least partially shares name servers with other domains, for example jumpclub.no, jeton.com.tw, 9893.org, sombat.be and fr-fotografie.nl.
These name servers are commonly used with chan.ns.cloudflare.com and chip.ns.cloudflare.com and galilea.ns.cloudflare.com.
Host names with six IP numbers:
gwen.ns.cloudflare.com points to 2606:4700:50::adf5:3aa0, 2803:f800:50::6ca2:c0a0, 2a06:98c1:50::ac40:20a0, 108.162.192.160, 172.64.32.160 and 173.245.58.160.
theo.ns.cloudflare.com points to 2606:4700:58::adf5:3b90, 2803:f800:50::6ca2:c190, 2a06:98c1:50::ac40:2190, 108.162.193.144, 172.64.33.144 and 173.245.59.144.