mail.classmanager.com - dns.ninja

`mail.classmanager.com`

DNSSEC

⚠️ Not signed

`classmanager.com`

DNSSEC	🔒 Signed (DS record present)
A	2606:4700:20::681a:428^{🇺🇸 Cloudflare2606:4700:20::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:20::681a:528^{🇺🇸 Cloudflare2606:4700:20::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:20::ac43:4886^{🇺🇸 Cloudflare2606:4700:20::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.26.4.40^{Cloudflare104.26.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.26.5.40^{Cloudflare104.26.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.72.134^{🇺🇸 Cloudflare172.67.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`arch.ns.cloudflare.com` ⭐
NS	`hera.ns.cloudflare.com`
MX	`aspmx.l.google.com` ⭐
MX	`alt1.aspmx.l.google.com`⁽⁵⁾
MX	`alt2.aspmx.l.google.com`⁽⁵⁾
MX	`aspmx2.googlemail.com`⁽¹⁰⁾
MX	`aspmx3.googlemail.com`⁽¹⁰⁾
TXT	`facebook-domain-verification=gmsvt7yum6q90akx52vavl2wp02pw3`
TXT	`google-site-verification=63Nr9D1V1dNV2jQQKTxwMIFHPXRWHC-1MlKh_gdjITA`
TXT	`google-site-verification=FvvmfEqDjbD8UeNgzGQYRweWB0yifey5LoWjUGf6Wu8`
TXT	`v=spf1 include:_spf.google.com include:amazonses.com include:139761362.spf04....`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.26.4.40, 104.26.5.40, 172.67.72.134
		IPv6 hints	2606:4700:20::681a:428, 2606:4700:20::681a:528, 2606:4700:20::ac43:4886
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=53, name=cloudflare-ech.com
SOA	`arch.ns.cloudflare.com`dns@cloudflare.com serial=2411371378

rank #388852 globally
rank #159264 in the tld
📈 Tranco rank: #152,985

PTR for

151.242.93.63.in-addr.arpa

Previously MX for

classmanager.com

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DNS History

5 records (0 active, 5 former)

○MXmail.b-io.co2016-03-29 → 2016-03-29 · 3 obs

● 2016-03-29 10:58:20
○ 2016-09-07 16:47:40
○ 2026-08-08 13:33:18

○A192.230.92.932016-09-07 → 2016-09-07 · 4 obs

○ 2016-03-29 10:58:20
● 2016-09-07 16:47:40
○ 2021-01-02 15:54:02
○ 2026-08-08 13:33:18

○A208.91.197.1322016-03-29 → 2016-03-29 · 4 obs

○ 2015-12-19 14:46:18
● 2016-03-29 10:58:20
○ 2016-09-07 16:47:40
○ 2026-08-08 13:33:18

○A65.126.203.682015-07-07 → 2015-12-19 · 4 obs

● 2015-07-07 23:42:32
● 2015-12-19 14:46:18
○ 2016-03-29 10:58:20
○ 2026-08-08 13:33:18

○CNAME3uwby.x.incapdns.net2016-09-07 → 2016-09-07 · 3 obs

● 2016-09-07 16:47:40
○ 2021-01-02 15:54:02
○ 2026-08-08 13:33:18

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	l.gtld-servers.net, f.gtld-servers.net, c.gtld-servers.net, b.gtld-servers.net...	-
classmanager.com	hera.ns.cloudflare.com, arch.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.192.162

NS records: hera.ns.cloudflare.com, arch.ns.cloudflare.com

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 555ms | Queries: -

📄 Records

Type	Count	Sample Data

📌 Glue Records Collected

Total: 12

Out-of-bailiwick: 12 (hera.ns.cloudflare.com, hera.ns.cloudflare.com, hera.ns.cloudflare.com...)