math-first.com - dns.ninja

`math-first.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3031::6815:17bb^{🇺🇸 Cloudflare2606:4700:3031::/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	104.21.23.187^{Cloudflare104.21.16.0/20 , 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:c23::1b^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`yuiadrs-in-f27.1e100.net`
		A	172.253.122.26^{🇺🇸 Google172.253.122.0/24}
			PTR	`bh-in-f26.1e100.net`
MX	`alt2.aspmx.l.google.com`⁽²⁰⁾
		A	2a00:1450:400b:c02::1b^{🇮🇪 Google2a00:1450:400b::/48}
			PTR	`dj-in-f27.1e100.net`
		A	172.253.116.27^{🇺🇸 Google172.253.116.0/24}
			PTR	`dj-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	2606:4700:3031::6815:17bb, 2606:4700:3037::ac43:d4bf
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=26, name=cloudflare-ech.com
SOA	`jean.ns.cloudflare.com`dns@cloudflare.com serial=2408324514

`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.net`nstld@verisign-grs.com serial=1785303062

⚠️ On DNS blocklist: tif

Same first word

math-first.com

DNS History

9 records (8 active, 1 former)

●NSjean.ns.cloudflare.com2026-02-21 → 2026-07-29 · 2 obs

● 2026-02-21 16:14:26
● 2026-07-29 05:55:46

●NSjosh.ns.cloudflare.com2026-02-21 → 2026-07-29 · 2 obs

● 2026-02-21 16:14:26
● 2026-07-29 05:55:46

●MXalt2.aspmx.l.google.com2026-02-21 → 2026-07-29 · 2 obs

● 2026-02-21 16:14:26
● 2026-07-29 05:55:46

●MXaspmx.l.google.com2026-02-21 → 2026-07-29 · 2 obs

● 2026-02-21 16:14:26
● 2026-07-29 05:55:46

●A104.21.23.1872026-02-21 → 2026-07-29 · 2 obs

● 2026-02-21 16:14:26
● 2026-07-29 05:55:46

●A172.67.212.1912026-02-21 → 2026-07-29 · 2 obs

● 2026-02-21 16:14:26
● 2026-07-29 05:55:46

●A2606:4700:3031::6815:17bb2026-06-29 → 2026-07-29 · 3 obs

○ 2026-02-21 16:14:26
● 2026-06-29 17:09:18
● 2026-07-29 05:55:46

○A2606:4700:3034::6815:17bb2026-02-21 → 2026-02-21 · 3 obs

● 2026-02-21 16:14:26
○ 2026-06-29 17:09:18
○ 2026-07-29 05:55:46

●A2606:4700:3037::ac43:d4bf2026-02-21 → 2026-07-29 · 2 obs

● 2026-02-21 16:14:26
● 2026-07-29 05:55:46

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	j.gtld-servers.net, b.gtld-servers.net, k.gtld-servers.net, c.gtld-servers.net...	-
math-first.com	jean.ns.cloudflare.com, josh.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.192.121

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: 301ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.23.187, 172.67.212.191`
AAAA	2	`2606:4700:3037::ac43:d4bf, 2606:4700:3031::6815:17bb`
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 points to the four IP addresses 104.21.23.187, 172.67.212.191, 2606:4700:3031::6815:17bb and 2606:4700:3037::ac43:d4bf.

Two other host names, along with sunnysea.club, www.softinventive.com and slotsdigestreviewhub.us, also share IP numbers with math-first.com.

Name Servers

DNS delegation for math-first.com points to two name servers: jean.ns.cloudflare.com and josh.ns.cloudflare.com.

math-first.com shares its NS records with other domains, for example tagicon.com, instituteofsocialentrepreneurs.biz, amazingdoggies.com and two others.

The name servers of math-first.com overlap at least partially with those of other domains — among them braindonors.org, serenityhousedetox.com, eventfinder.at and two more.

These name servers commonly appear in combination with the name servers paul.ns.cloudflare.com.

DNS names with 6 IP addresses:

jean.ns.cloudflare.com has IP addresses 108.162.192.121, 172.64.32.121 and 173.245.58.121, plus 3 other.

josh.ns.cloudflare.com has IP addresses 108.162.193.126, 172.64.33.126 and 173.245.59.126, plus 3 other.

Mail Servers

math-first.com is served by two mail servers, aspmx.l.google.com and alt2.aspmx.l.google.com.

Among the domains sharing a mail server setup with math-first.com are agroit.com.ua, thefemmena.com, mlsdailyalert.com and two others.

There is at least a partial MX overlap between math-first.com and other domains, including 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 and two others.

These mail servers tend to appear in combination with mail servers alt1.aspmx.l.google.com, alt3.aspmx.l.google.com, alt4.aspmx.l.google.com and 4 others.

aspmx.l.google.com directs to 172.253.122.26 and 2607:f8b0:4004:c23::1b. alt2.aspmx.l.google.com directs to 172.253.116.27 and 2a00:1450:400b:c02::1b. Each host name carries two IP addresses.