mail.off2class.com - dns.ninja

mail.off2class.com

CNAMEdualstack.app-297444867.us-east-2.elb.amazonaws.com
DNSSEC⚠️ Not signed
A3.18.205.60🇺🇸 Amazon3.16.0.0/14 EC2 CMH prefix
PTRec2-3-18-205-60.us-east-2.compute.amazonaws.com
A3.132.77.39🇺🇸 Amazon3.132.0.0/14 EC2 CMH prefix
A3.133.204.131🇺🇸 Amazon3.132.0.0/14 EC2 CMH prefix

off2class.com

DNSSEC⚠️ Not signed
A2606:4700:20::681a:c4d🇺🇸 Cloudflare2606:4700:20::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:20::681a:d4d🇺🇸 Cloudflare2606:4700:20::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:20::ac43:4403🇺🇸 Cloudflare2606:4700:20::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.26.12.77Cloudflare104.26.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.26.13.77Cloudflare104.26.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.68.3🇺🇸 Cloudflare172.67.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSbruce.ns.cloudflare.com ⭐
NStess.ns.cloudflare.com
MXaspmx.l.google.com ⭐
MXalt1.aspmx.l.google.com(5)
MXalt2.aspmx.l.google.com(5)
MXalt3.aspmx.l.google.com(10)
MXalt4.aspmx.l.google.com(10)
TXT_globalsign-domain-verification=3YuZZGExp0k0uO4yWOXNdJ84UAOEWvsqTLNES-pF74
TXTgoogle-site-verification=klKv3VUYFIwaGeSsGA1xKYMB84xnwPUfY_91PbXJ2UU
TXTv=spf1 a mx ip4:67.227.154.154 include:spf.mandrillapp.com include:_spf.googl...
HTTPSHTTP/2 ✓ hints match
IPv4 hints104.26.12.77, 104.26.13.77, 172.67.68.3
IPv6 hints2606:4700:20::681a:c4d, 2606:4700:20::681a:d4d, 2606:4700:20::ac43:4403
SOAbruce.ns.cloudflare.comdns@cloudflare.com serial=2411010887
rank #992232 globally
rank #429088 in the tld
🔒 HSTS Preload (+subdomains)
📈 Tranco rank: #336,453

Previously MX for

www.off2class.com
host.off2class.com
off2class.com

Same first word

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DNS History

7 records (1 active, 6 former)

20162017201820192020202120222023202420252026A18.217.67.2322a01:7e00::f03c:91ff:fe73:3e323.132.46.53.134.222.7967.227.154.15485.159.214.243CNAMEdualstack.app-297444867.us-east-2.elb.amazonaws.com
○A18.217.67.2322026-06-10 → 2026-08-03 · 2 obs
○ 2026-06-10 18:59:36
○ 2026-08-03 22:42:06
○A2a01:7e00::f03c:91ff:fe73:3e322015-07-22 → 2016-03-11 · 4 obs
● 2015-07-22 04:49:58
● 2016-03-11 07:17:32
○ 2016-09-10 04:29:22
○ 2026-08-03 22:42:06
○A3.132.46.52026-06-10 → 2026-08-03 · 2 obs
○ 2026-06-10 18:59:36
○ 2026-08-03 22:42:06
○A3.134.222.792026-06-10 → 2026-08-03 · 2 obs
○ 2026-06-10 18:59:36
○ 2026-08-03 22:42:06
○A67.227.154.1542016-09-10 → 2016-09-10 · 4 obs
○ 2016-03-11 07:17:32
● 2016-09-10 04:29:22
○ 2026-06-10 18:59:36
○ 2026-08-03 22:42:06
○A85.159.214.2432015-07-22 → 2016-03-11 · 4 obs
● 2015-07-22 04:49:58
● 2016-03-11 07:17:32
○ 2016-09-10 04:29:22
○ 2026-08-03 22:42:06
●CNAMEdualstack.app-297444867.us-east-2.elb.amazonaws.com2026-06-10 → 2026-08-03 · 2 obs
● 2026-06-10 18:59:36
● 2026-08-03 22:42:06

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
coma.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...-
off2class.comtess.ns.cloudflare.com, bruce.ns.cloudflare.com12 records

✅ Authoritative Response

Server:108.162.192.227

NS records: tess.ns.cloudflare.com, bruce.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for off2class.com (unsigned zone)

⏱️ Timing

Total: 128ms | Queries: -

📄 Records

TypeCountSample Data
CNAME1dualstack.app-297444867.us-east-2.elb.am

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

mail.off2class.com directs to three IP numbers: 3.18.205.60, 3.132.77.39 and 3.133.204.131.

Further host names like lab01.lkcsproof.com and dualstack.app-297444867.us-east-2.elb.amazonaws.com overlap in IP numbers with mail.off2class.com.