`mastery.com.bd`

DNSSEC	⚠️ Not signed
A	2606:4700:3036::ac43:967a^{🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3037::6815:6018^{🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.96.24^{Cloudflare104.21.96.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.150.122^{🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`aida.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3a3a^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`aida.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c03a^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`aida.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:203a^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`aida.ns.cloudflare.com`
		A	108.162.192.58^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`aida.ns.cloudflare.com`
		A	172.64.32.58^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`aida.ns.cloudflare.com`
		A	173.245.58.58^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`aida.ns.cloudflare.com`
NS	`brian.ns.cloudflare.com`
		A	2606:4700:58::a29f:2c24^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`brian.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c324^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`brian.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2324^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`brian.ns.cloudflare.com`
		A	108.162.195.36^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`brian.ns.cloudflare.com`
		A	162.159.44.36^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`brian.ns.cloudflare.com`
		A	172.64.35.36^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`brian.ns.cloudflare.com`
MX	`mx1.emailsrvr.com` ⭐
		A	184.106.54.1^{🇺🇸 RACKSPACE-ORD184.106.54.0/24 Rackspace ORD}
			PTR	`mx1.emailsrvr.com`
MX	`mx2.emailsrvr.com`⁽²⁰⁾
		A	108.166.43.2^{🇺🇸 RACKSPACE-ORD108.166.0.0/18 Rackspace}
			PTR	`mx2.emailsrvr.com`
		A	146.20.161.2^{🇺🇸 RACKSPACE-IAD146.20.0.0/16 Rackspace US Inc}
			PTR	`mx2.emailsrvr.com`
		A	173.203.187.2^{🇺🇸 RACKSPACE-IAD173.203.128.0/18 Rackspace Managed Hosting, 9725 Data point drive, Suite 100, San Antonio, TX 78229}
			PTR	`mx2.emailsrvr.com`
		A	184.106.54.2^{🇺🇸 RACKSPACE-ORD184.106.54.0/24 Rackspace ORD}
			PTR	`mx2.emailsrvr.com`
TXT	`_dmarc Value: v=DMARC1; p=none;`
TXT	`v=spf1 a mx include:_spf.elasticemail.com include:emailsrvr.com -all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.96.24, 172.67.150.122
		IPv6 hints	2606:4700:3036::ac43:967a, 2606:4700:3037::6815:6018
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=234, name=cloudflare-ech.com
SOA	`aida.ns.cloudflare.com`dns@cloudflare.com serial=2399604497

`com.bd`

	DNSSEC	⚠️ Not signed
	NS	`dns.bd` ⭐ ⚠️ Not in parent delegation
	NS	`bd-ns.anycast.pch.net` ⚠️ Not in parent delegation
	NS	`jamuna.btcl.net.bd` ⚠️ Not in parent delegation
	NS	`surma.btcl.net.bd` ⚠️ Not in parent delegation
	SOA	`dns.bd`root@dns.bd serial=2025237086

WOT: SAFE (60/100)
WOT: SAFE (62/100)

Subdomains

excel.mastery.com.bd

Same first word

Similar names

streamy.club

symetra.org

streamy.org

myretas.eu

mystera.at

mytears.org

artemys.com

myrates.ca

mayster.kiev.ua

symetra.info

mytaser.com

amestry.com

esymart.com

mysrate.com

myretas.com

yamster.ru

mayster.com

artemys.eu

steryma.com

merysta.com

mesraty.com

streamy.se

streamy.nl

mayster.com.ua

easyrmt.com

myretas.co.uk

symetra.pl

mayster.net

trymesa.com

myaster.com

myretas.net

seymart.com

streamy.net

mayters.com

streamy.co.uk

symetra.cloud

myrates.info

mystera.org

ystream.net

artemys.com.br

myretas.be

starmey.com

mytears.biz

streamy.cz

mystera.com

mayster.co.il

symetra.dev

myretas.es

streamy.no

mayster.ru

streamy.in

streamy.site

symetra.no

myretas.de

streamy.land

mystrea.cz

mystera.net

streamy.media

ratemys.com

ystream.id

mytaser.net

symetra.cz

myaster.sa

streamy.live

DNS History

8 records (8 active, 0 former)

●NSaida.ns.cloudflare.com2026-04-05 → 2026-04-12 · 2 obs

● 2026-04-05 05:10:56
● 2026-04-12 01:14:38

●NSbrian.ns.cloudflare.com2026-04-05 → 2026-04-12 · 2 obs

● 2026-04-05 05:10:56
● 2026-04-12 01:14:38

●MXmx1.emailsrvr.com2026-04-05 → 2026-04-12 · 2 obs

● 2026-04-05 05:10:56
● 2026-04-12 01:14:38

●MXmx2.emailsrvr.com2026-04-05 → 2026-04-12 · 2 obs

● 2026-04-05 05:10:56
● 2026-04-12 01:14:38

●A104.21.96.242026-04-05 → 2026-04-12 · 2 obs

● 2026-04-05 05:10:56
● 2026-04-12 01:14:38

●A172.67.150.1222026-04-05 → 2026-04-12 · 2 obs

● 2026-04-05 05:10:56
● 2026-04-12 01:14:38

●A2606:4700:3036::ac43:967a2026-04-05 → 2026-04-12 · 2 obs

● 2026-04-05 05:10:56
● 2026-04-12 01:14:38

●A2606:4700:3037::6815:60182026-04-05 → 2026-04-12 · 2 obs

● 2026-04-05 05:10:56
● 2026-04-12 01:14:38

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
bd	bd-ns.anycast.pch.net, dns.bd, jamuna.btcl.net.bd, surma.btcl.net.bd	8 records
mastery.com.bd	brian.ns.cloudflare.com, aida.ns.cloudflare.com	-

✅ Authoritative Response

Server:108.162.192.58

NS records: brian.ns.cloudflare.com, aida.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for mastery.com.bd (unsigned zone)

⏱️ Timing

Total: 1564ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.96.24, 172.67.150.122`
AAAA	2	`2606:4700:3036::ac43:967a, 2606:4700:3037::6815:6018`
NS	2	`aida.ns.cloudflare.com, brian.ns.cloudflare.com`
MX	2	`mx1.emailsrvr.com (pri: 10), mx2.emailsrvr.com (pri: 20)`
TXT	2	`_dmarc Value: v=DMARC1; p=none;, v=spf1 a mx include:_spf.elasticemail.co`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`aida.ns.cloudflare.com dns.cloudflare.co`

📌 Glue Records Collected

Total: 8

In-bailiwick: 6 (dns.bd, surma.btcl.net.bd, jamuna.btcl.net.bd...)

Out-of-bailiwick: 2 (bd-ns.anycast.pch.net, bd-ns.anycast.pch.net)

Analysis

Hierarchy

excel.mastery.com.bd has mastery.com.bd as its parent.

IP Addresses

mastery.com.bd maps to four IP numbers: 2606:4700:3036::ac43:967a, 2606:4700:3037::6815:6018, 104.21.96.24 and 172.67.150.122.

Other host names, for instance morel.si, www.widescreengamer.com, fsoe.se, beckmann-zeichnen-schreiben-basteln.de and zhouxiaolong.com share IP numbers with mastery.com.bd.

Name Servers

Two name servers aida.ns.cloudflare.com and brian.ns.cloudflare.com are delegated to mastery.com.bd.

mastery.com.bd uses the same name server configuration as other domains, such as hidevpn.net, svmabrouka.com, ctfy.dev, foodiemaniac.com and unlimited.energy.

mastery.com.bd at least partially shares name servers with other domains such as agregga.com, callbobsmith.com, sinoprser.pro, grannysquare.me and breakerbox.com.

These name servers are commonly used with beau.ns.cloudflare.com and remy.ns.cloudflare.com.

Host names with six IP numbers: Host name aida.ns.cloudflare.com points to 2606:4700:50::adf5:3a3a, 2803:f800:50::6ca2:c03a, 2a06:98c1:50::ac40:203a, 108.162.192.58, 172.64.32.58 and 173.245.58.58; host name brian.ns.cloudflare.com points to 2606:4700:58::a29f:2c24, 2803:f800:50::6ca2:c324, 2a06:98c1:50::ac40:2324, 108.162.195.36, 162.159.44.36 and 172.64.35.36.

Mail Servers

Two mail servers handle mastery.com.bd: mx1.emailsrvr.com and mx2.emailsrvr.com.

mastery.com.bd shares the same mail server setup as other domains, including sasquatchcomputer.com, bodyguards.com, thecarrhome.com, prohibition.co and batterymax.pk.

mastery.com.bd shares mail servers with other domains at least in part, for instance client-216-57-220-193.bhm.pogozone.net, mojocoffeelabs.com, voy77.com, ptrax.com and vamcom.com.

Host names with four IP numbers:

mx2.emailsrvr.com points to 108.166.43.2, 146.20.161.2, 173.203.187.2 and 184.106.54.2.

Host names with one IP number:

mx1.emailsrvr.com points to 184.106.54.1.

mastery.com.bd - robtex.com

mastery.com.bd

com.bd

Subdomains

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

📌 Glue Records Collected

Analysis

Hierarchy

IP Addresses

Name Servers

Mail Servers

`mastery.com.bd`

`com.bd`