math-first.com - robtex.com
math-first.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2606:4700:3034::6815:17bb🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 2606:4700:3037::ac43:d4bf🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 104.21.23.187Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 172.67.212.191🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| NS | jean.ns.cloudflare.com ⭐ | ||||||
| A | 2606:4700:50::adf5:3a79🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | jean.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c079🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | jean.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:2079🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | jean.ns.cloudflare.com | ||||||
| A | 108.162.192.121🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | jean.ns.cloudflare.com | ||||||
| A | 172.64.32.121🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | jean.ns.cloudflare.com | ||||||
| A | 173.245.58.121🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | jean.ns.cloudflare.com | ||||||
| NS | josh.ns.cloudflare.com | ||||||
| A | 2606:4700:58::adf5:3b7e🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | josh.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c17e🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | josh.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:217e🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | josh.ns.cloudflare.com | ||||||
| A | 108.162.193.126🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | josh.ns.cloudflare.com | ||||||
| A | 172.64.33.126🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | josh.ns.cloudflare.com | ||||||
| A | 173.245.59.126🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | josh.ns.cloudflare.com | ||||||
| MX | aspmx.l.google.com ⭐ | ||||||
| A | 2607:f8b0:4004:c25::1b🇺🇸 Google2607:f8b0:4004::/48 | ||||||
| PTR | yuiadtq-in-f27.1e100.net | ||||||
| A | 192.178.155.27🇺🇸 Google192.178.155.0/24 | ||||||
| PTR | yuiadrs-in-f27.1e100.net | ||||||
| MX | alt2.aspmx.l.google.com(20) | ||||||
| A | 2607:f8b0:4023:3003::1a🇺🇸 Google2607:f8b0::/32 | ||||||
| PTR | yulnkjt-in-f26.1e100.net | ||||||
| A | 172.253.145.27🇺🇸 Google172.253.145.0/24 | ||||||
| PTR | yulnkjt-in-f27.1e100.net | ||||||
| TXT | google-site-verification=-iqlqlag9DsNeVI6jwn-sjiyOpW6oPrI1PIVm0SLHlw | ||||||
| TXT | google-site-verification=FiU4yT_sHHyM9QZuUuhhASG14CnPjL9UysSWhjlF8Zc | ||||||
| TXT | google-site-verification=GuZ0YUzH9tO8RDBVgidYYhrfCYnv6td1ftb0gHBEc_Y | ||||||
| HTTPS | HTTP/3, HTTP/2 ✓ hints match | ||||||
| IPv4 hints | 104.21.23.187, 172.67.212.191 | ||||||
| IPv6 hints | 2606:4700:3034::6815:17bb, 2606:4700:3037::ac43:d4bf | ||||||
| ECH | X25519, HKDF-SHA256 + AES-128-GCM draft, id=105, name=cloudflare-ech.com | ||||||
| SOA | jean.ns.cloudflare.comdns@cloudflare.com serial=2401140795 | ||||||
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=1777182221 | ||||||
Same first word
math-first.com |
DNS History
8 records (8 active, 0 former)
●NSjean.ns.cloudflare.com2026-02-21 → 2026-04-26 · 2 obs
● 2026-04-26 05:44:28
●NSjosh.ns.cloudflare.com2026-02-21 → 2026-04-26 · 2 obs
● 2026-04-26 05:44:28
●MXalt2.aspmx.l.google.com2026-02-21 → 2026-04-26 · 2 obs
● 2026-04-26 05:44:28
●MXaspmx.l.google.com2026-02-21 → 2026-04-26 · 2 obs
● 2026-04-26 05:44:28
●A104.21.23.1872026-02-21 → 2026-04-26 · 2 obs
● 2026-04-26 05:44:28
●A172.67.212.1912026-02-21 → 2026-04-26 · 2 obs
● 2026-04-26 05:44:28
●A2606:4700:3034::6815:17bb2026-02-21 → 2026-04-26 · 2 obs
● 2026-04-26 05:44:28
●A2606:4700:3037::ac43:d4bf2026-02-21 → 2026-04-26 · 2 obs
● 2026-04-26 05:44:28
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| math-first.com | jean.ns.cloudflare.com, josh.ns.cloudflare.com | 12 records |
✅ Authoritative Response
Server:108.162.193.126
NS records: jean.ns.cloudflare.com, josh.ns.cloudflare.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for math-first.com (unsigned zone)
⏱️ Timing
Total: 97ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 104.21.23.187, 172.67.212.191 |
| AAAA | 2 | 2606:4700:3034::6815:17bb, 2606:4700:3037::ac43:d4bf |
| NS | 2 | jean.ns.cloudflare.com, josh.ns.cloudflare.com |
| MX | 2 | aspmx.l.google.com (pri: 10), alt2.aspmx.l.google.com (pri: 20) |
| TXT | 3 | google-site-verification=-iqlqlag9DsNeVI, google-site-verification=FiU4yT_sHHyM9QZ... |
| HTTPS | 1 | {"priority":1,"target":".","alpn":["h3", |
| SOA | 1 | jean.ns.cloudflare.com dns.cloudflare.co |
📌 Glue Records Collected
Total: 12
Out-of-bailiwick: 12 (jean.ns.cloudflare.com, jean.ns.cloudflare.com, jean.ns.cloudflare.com...)
Analysis
IP Addresses
math-first.com resolves to four IPs: 2606:4700:3034::6815:17bb, 2606:4700:3037::ac43:d4bf, 104.21.23.187 and 172.67.212.191.
Other host names, for instance sunnysea.club, www.softinventive.com, slotsdigestreviewhub.us, 1e754b4ed561.idaramsb.org and acoustigreen.com share IP numbers with math-first.com.
Name Servers
math-first.com has two name servers: jean.ns.cloudflare.com and josh.ns.cloudflare.com.
math-first.com shares the same name server setup as other domains, for example tagicon.com, instituteofsocialentrepreneurs.biz, amazingdoggies.com, oathresearch.com and dashwatchbeta.org.
math-first.com shares some name servers with other domains, for example braindonors.org, eventfinder.at, 1024ku.com, darevue.com and swissairpurifier.co.za.
Host names with six IP numbers: jean.ns.cloudflare.com points to: 2606:4700:50::adf5:3a79, 2803:f800:50::6ca2:c079, 2a06:98c1:50::ac40:2079, 108.162.192.121, 172.64.32.121 and 173.245.58.121; josh.ns.cloudflare.com points to: 2606:4700:58::adf5:3b7e, 2803:f800:50::6ca2:c17e, 2a06:98c1:50::ac40:217e, 108.162.193.126, 172.64.33.126 and 173.245.59.126.
Mail Servers
math-first.com is served by two mail servers: aspmx.l.google.com and alt2.aspmx.l.google.com.
math-first.com shares the mail server setup with other domains, for example agroit.com.ua, thefemmena.com, juniqe.fi, mlsdailyalert.com and constelor.com.
math-first.com shares some mail servers with other domains, at least partially; for instance ns500759.ns500759.ns500698.ns500736.ns500736.ns500735.ns500698.ns500698.ns500736.ns500736.ns500698.ns500576.ns500619.ns500698.trackreceptor.com, minaguli.com, ns500758.ns500698.ns500758.ns500735.ns500698.ns500735.ns500735.ns500736.ns500576.ns500708.ns500576.ns500708.ns500698.ns500619.ns500619.ns500619.trackreceptor.com, ns500671.ns500671.ns500742.ns500704.ns500742.ns500731.ns500704.ns500704.ns500704.ns500704.ns500666.ns500666.ns500131.lustychickser.com and ns500742.ns500742.ns500754.ns500731.ns500742.ns500754.ns500742.ns500671.ns500666.ns500649.ns500153.tenderladiesbz.com.
these mail servers are often used together with the mail servers alt1.aspmx.l.google.com, alt3.aspmx.l.google.com, alt4.aspmx.l.google.com, aspmx2.googlemail.com, aspmx3.googlemail.com, aspmx4.googlemail.com and aspmx5.googlemail.com.
Host names with two IP numbers:
aspmx.l.google.com points to: 2607:f8b0:4004:c25::1b and 192.178.155.27; alt2.aspmx.l.google.com points to: 2607:f8b0:4023:3003::1a and 172.253.145.27.