mail.topicsforclass.com - robtex.com

mail.topicsforclass.com

DNSSEC⚠️ Not signed
A2606:4700:3033::ac43:c841🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3035::6815:3cc2🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.60.194Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.200.65🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4104.21.60.194, 172.67.200.65
IPv62606:4700:3033::ac43:c841, 2606:4700:3035::6815:3cc2

topicsforclass.com

DNSSEC⚠️ Not signed
A2606:4700:3033::ac43:c841🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3035::6815:3cc2🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.60.194Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.200.65🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSpoppy.ns.cloudflare.com ⭐
NStrevor.ns.cloudflare.com
MX_dc-mx.5f689a16082a.topicsforclass.com ⭐
TXTv=spf1 a mx include:spf.securedserverspace.com ~all
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4104.21.60.194, 172.67.200.65
IPv62606:4700:3033::ac43:c841, 2606:4700:3035::6815:3cc2
SOApoppy.ns.cloudflare.comdns@cloudflare.com serial=2399421979

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DNS History

8 records (4 active, 4 former)

A104.21.60.194172.67.200.652606:4700:3033::ac43:c8412606:4700:3035::6815:3cc2188.114.96.4188.114.97.42a06:98c1:3120::2a06:98c1:3121::
●A104.21.60.1942026-02-26 → 2026-03-25 · 2 obs
● 2026-02-26 00:10:28
● 2026-03-25 01:24:44
●A172.67.200.652026-02-26 → 2026-03-25 · 2 obs
● 2026-02-26 00:10:28
● 2026-03-25 01:24:44
○A188.114.96.42026-02-26 → 2026-03-25 · 2 obs
○ 2026-02-26 00:10:28
○ 2026-03-25 01:24:44
○A188.114.97.42026-02-26 → 2026-03-25 · 2 obs
○ 2026-02-26 00:10:28
○ 2026-03-25 01:24:44
●A2606:4700:3033::ac43:c8412026-02-26 → 2026-03-25 · 2 obs
● 2026-02-26 00:10:28
● 2026-03-25 01:24:44
●A2606:4700:3035::6815:3cc22026-02-26 → 2026-03-25 · 2 obs
● 2026-02-26 00:10:28
● 2026-03-25 01:24:44
○A2a06:98c1:3120::2026-02-26 → 2026-03-25 · 2 obs
○ 2026-02-26 00:10:28
○ 2026-03-25 01:24:44
○A2a06:98c1:3121::2026-02-26 → 2026-03-25 · 2 obs
○ 2026-02-26 00:10:28
○ 2026-03-25 01:24:44

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
coma.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...-
topicsforclass.compoppy.ns.cloudflare.com, trevor.ns.cloudflare.com12 records

✅ Authoritative Response

Server:108.162.195.154

NS records: poppy.ns.cloudflare.com, trevor.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for topicsforclass.com (unsigned zone)

⏱️ Timing

Total: 98ms | Queries: -

📄 Records

TypeCountSample Data
A2172.67.200.65, 104.21.60.194
AAAA22606:4700:3035::6815:3cc2, 2606:4700:3033::ac43:c841
HTTPS1{"priority":1,"target":".","alpn":["h3",

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

mail.topicsforclass.com maps to four IP numbers: 2606:4700:3033::ac43:c841, 2606:4700:3035::6815:3cc2, 104.21.60.194 and 172.67.200.65.

Other host names such as dateinbed.com, mopotime.com, towingglendaleca.com, mail.rinjanikingdom.com and mail.niew.at share IPs with mail.topicsforclass.com.