mail.class99.us - robtex.com

mail.class99.us

DNSSEC⚠️ Not signed
A2606:4700:3031::6815:1a32🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3035::ac43:8765🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.26.50Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.135.101🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4104.21.26.50, 172.67.135.101
IPv62606:4700:3031::6815:1a32, 2606:4700:3035::ac43:8765

class99.us

DNSSEC⚠️ Not signed
A2606:4700:3031::6815:1a32🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3035::ac43:8765🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.26.50Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.135.101🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSmagdalena.ns.cloudflare.com ⭐
NSnoah.ns.cloudflare.com
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4104.21.26.50, 172.67.135.101
IPv62606:4700:3031::6815:1a32, 2606:4700:3035::ac43:8765
SOAmagdalena.ns.cloudflare.comdns@cloudflare.com serial=2397480930

Previously MX for

class99.us

Same first word

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DNS History

5 records (4 active, 1 former)

202120222023202420252026A104.21.26.50172.67.135.1012606:4700:3031::6815:1a322606:4700:3035::ac43:8765198.54.114.128
●A104.21.26.502026-03-23 → 2026-03-23 · 2 obs
○ 2020-01-25 01:11:16
● 2026-03-23 14:19:42
●A172.67.135.1012026-03-23 → 2026-03-23 · 2 obs
○ 2020-01-25 01:11:16
● 2026-03-23 14:19:42
○A198.54.114.1282020-01-25 → 2020-01-25 · 2 obs
● 2020-01-25 01:11:16
○ 2026-03-23 14:19:42
●A2606:4700:3031::6815:1a322026-03-23 → 2026-03-23 · 2 obs
○ 2020-01-25 01:11:16
● 2026-03-23 14:19:42
●A2606:4700:3035::ac43:87652026-03-23 → 2026-03-23 · 2 obs
○ 2020-01-25 01:11:16
● 2026-03-23 14:19:42

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
usn.cctld.us, f.cctld.us, b.cctld.us, y.cctld.us...-
class99.usmagdalena.ns.cloudflare.com, noah.ns.cloudflare.com-

✅ Authoritative Response

Server:162.159.38.8

NS records: magdalena.ns.cloudflare.com, noah.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for class99.us (unsigned zone)

⏱️ Timing

Total: 2896ms | Queries: -

📄 Records

TypeCountSample Data
A2172.67.135.101, 104.21.26.50
AAAA22606:4700:3035::ac43:8765, 2606:4700:3031::6815:1a32
HTTPS1{"priority":1,"target":".","alpn":["h3",

Analysis

IP Addresses

mail.class99.us resolves to four IP numbers: 2606:4700:3031::6815:1a32, 2606:4700:3035::ac43:8765, 104.21.26.50 and 172.67.135.101.

Other host names such as mingludaquan.cn, cristinacampillopsicologa.com, ns1.devandhost.com, aeskf.com and onthewaytodying.com share IPs with mail.class99.us.