mail.sterlingbd.com - robtex.com

mail.sterlingbd.com

DNSSEC⚠️ Not signed
A2606:4700:3030::ac43:9916🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3037::6815:20ab🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.32.171Cloudflare104.21.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.153.22🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.32.171, 172.67.153.22
IPv6 hints2606:4700:3030::ac43:9916, 2606:4700:3037::6815:20ab
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=42, name=cloudflare-ech.com

sterlingbd.com

DNSSEC⚠️ Not signed
A2606:4700:3030::ac43:9916🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3037::6815:20ab🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.32.171Cloudflare104.21.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.153.22🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NScolette.ns.cloudflare.com ⭐
NSezra.ns.cloudflare.com
MXsterlingbd-com.mail.protection.outlook.com ⭐
TXTMS=ms64237326
TXTca3-eca86cae48764cbe8e634ba986ae10e6
TXTv=spf1 include:spf.protection.outlook.com -all
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.32.171, 172.67.153.22
IPv6 hints2606:4700:3030::ac43:9916, 2606:4700:3037::6815:20ab
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=42, name=cloudflare-ech.com
SOAcolette.ns.cloudflare.comdns@cloudflare.com serial=2410254711

Previously MX for

sterlingbd.com

Same first word

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DNS History

5 records (4 active, 1 former)

20162017201820192020202120222023202420252026A104.21.32.171172.67.153.222606:4700:3030::ac43:99162606:4700:3037::6815:20ab182.160.107.54
●A104.21.32.1712026-07-13 → 2026-08-13 · 3 obs
○ 2016-12-02 08:53:36
● 2026-07-13 07:47:40
● 2026-08-13 16:32:20
●A172.67.153.222026-07-13 → 2026-08-13 · 3 obs
○ 2016-12-02 08:53:36
● 2026-07-13 07:47:40
● 2026-08-13 16:32:20
○A182.160.107.542015-07-05 → 2016-12-02 · 4 obs
● 2015-07-05 16:31:56
● 2016-12-02 08:53:36
○ 2026-07-13 07:47:40
○ 2026-08-13 16:32:20
●A2606:4700:3030::ac43:99162026-07-13 → 2026-08-13 · 3 obs
○ 2016-12-02 08:53:36
● 2026-07-13 07:47:40
● 2026-08-13 16:32:20
●A2606:4700:3037::6815:20ab2026-07-13 → 2026-08-13 · 3 obs
○ 2016-12-02 08:53:36
● 2026-07-13 07:47:40
● 2026-08-13 16:32:20

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
comh.gtld-servers.net, i.gtld-servers.net, j.gtld-servers.net, g.gtld-servers.net...-
sterlingbd.comcolette.ns.cloudflare.com, ezra.ns.cloudflare.com12 records

✅ Authoritative Response

Server:108.162.194.28

NS records: colette.ns.cloudflare.com, ezra.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for sterlingbd.com (unsigned zone)

⏱️ Timing

Total: 236ms | Queries: -

📄 Records

TypeCountSample Data
A2172.67.153.22, 104.21.32.171
AAAA22606:4700:3030::ac43:9916, 2606:4700:3037::6815:20ab
HTTPS1{"priority":1,"target":".","alpn":["h3",

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

mail.sterlingbd.com points to the four IP addresses 104.21.32.171, 172.67.153.22, 2606:4700:3030::ac43:9916 and 2606:4700:3037::6815:20ab.

kachuha.com, pr.gorix.sbs, arizonaelectricalauthority.com plus two other host names have IP numbers in common with mail.sterlingbd.com.