`bitcoin-mastery.org`

DNSSEC	⚠️ Not signed
A	2606:4700:3031::6815:254c^{🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3033::ac43:cde3^{🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.37.76^{Cloudflare104.21.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.205.227^{🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`agustin.ns.cloudflare.com` ⭐
		A	2606:4700:58::a29f:2c5a^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`agustin.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c35a^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`agustin.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:235a^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`agustin.ns.cloudflare.com`
		A	108.162.195.90^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`agustin.ns.cloudflare.com`
		A	162.159.44.90^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`agustin.ns.cloudflare.com`
		A	172.64.35.90^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`agustin.ns.cloudflare.com`
NS	`veronica.ns.cloudflare.com`
		A	2606:4700:50::a29f:26ad^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`veronica.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c2ad^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`veronica.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:22ad^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`veronica.ns.cloudflare.com`
		A	108.162.194.173^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`veronica.ns.cloudflare.com`
		A	162.159.38.173^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`veronica.ns.cloudflare.com`
		A	172.64.34.173^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`veronica.ns.cloudflare.com`
TXT	`google-site-verification=Y4SPwIO3HnicOmOiDTjl4UPUTpONVuM-voPSs0sqWxA`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4	104.21.37.76, 172.67.205.227
		IPv6	2606:4700:3031::6815:254c, 2606:4700:3033::ac43:cde3
SOA	`agustin.ns.cloudflare.com`dns@cloudflare.com serial=2398902046

`org`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a0.org.afilias-nst.info` ⭐ ⚠️ Not in parent delegation
	NS	`a2.org.afilias-nst.info` ⚠️ Not in parent delegation
	NS	`b0.org.afilias-nst.org`
	NS	`b2.org.afilias-nst.org`
	NS	`c0.org.afilias-nst.info` ⚠️ Not in parent delegation
	NS	`d0.org.afilias-nst.org`
	SOA	`a0.org.afilias-nst.info`hostmaster@donuts.email serial=1774609685

⚠️ On DNS blocklist: tif

Same first word

bitcoin-mastery.app

bitcoin-mastery.org

DNS History

6 records (6 active, 0 former)

●NSagustin.ns.cloudflare.com2026-02-17 → 2026-03-27 · 2 obs

● 2026-02-17 18:02:42
● 2026-03-27 11:24:06

●NSveronica.ns.cloudflare.com2026-02-17 → 2026-03-27 · 2 obs

● 2026-02-17 18:02:42
● 2026-03-27 11:24:06

●A104.21.37.762026-02-17 → 2026-03-27 · 2 obs

● 2026-02-17 18:02:42
● 2026-03-27 11:24:06

●A172.67.205.2272026-02-17 → 2026-03-27 · 2 obs

● 2026-02-17 18:02:42
● 2026-03-27 11:24:06

●A2606:4700:3031::6815:254c2026-02-17 → 2026-03-27 · 2 obs

● 2026-02-17 18:02:42
● 2026-03-27 11:24:06

●A2606:4700:3033::ac43:cde32026-02-17 → 2026-03-27 · 2 obs

● 2026-02-17 18:02:42
● 2026-03-27 11:24:06

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
org	b0.org.afilias-nst.org, b2.org.afilias-nst.org, d0.org.afilias-nst.org	-
bitcoin-mastery.org	agustin.ns.cloudflare.com, veronica.ns.cloudflare.com	-

✅ Authoritative Response

Server:172.64.35.90

NS records: agustin.ns.cloudflare.com, veronica.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for bitcoin-mastery.org (unsigned zone)

⏱️ Timing

Total: 364ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.37.76, 172.67.205.227`
AAAA	2	`2606:4700:3031::6815:254c, 2606:4700:3033::ac43:cde3`
NS	2	`agustin.ns.cloudflare.com, veronica.ns.cloudflare.com`
TXT	1	`google-site-verification=Y4SPwIO3HnicOmO`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`agustin.ns.cloudflare.com dns.cloudflare`

Analysis

IP Addresses

bitcoin-mastery.org resolves to four IP numbers: 2606:4700:3031::6815:254c, 2606:4700:3033::ac43:cde3, 104.21.37.76 and 172.67.205.227.

Other host names such as tibetanfood123.com, macpremium.org, www.sanatatea-ficatului.ro.cdn.cloudflare.net, kissenglishcenter.com and shangguo520.com share IPs with bitcoin-mastery.org.

Name Servers

bitcoin-mastery.org is delegated to two name servers: agustin.ns.cloudflare.com and veronica.ns.cloudflare.com.

bitcoin-mastery.org shares the same name server setup as tibetanbuddhistencyclopedia.com, illustraai.com, (0x626c6f776a6f62)(0x706f726e).co, (0x6e756465)share.com and illustration.app.

bitcoin-mastery.org at least partially shares name servers with other domains, for instance gsis.us, rotaryfbmarrecas.org.br, dqcfw.cn, casual.solutions and jorbb.com.

These name servers are commonly used with sarah.ns.cloudflare.com and felicity.ns.cloudflare.com.

Host names with six IP numbers:

agustin.ns.cloudflare.com points to 2606:4700:58::a29f:2c5a, 2803:f800:50::6ca2:c35a, 2a06:98c1:50::ac40:235a, 108.162.195.90, 162.159.44.90 and 172.64.35.90.

veronica.ns.cloudflare.com points to 2606:4700:50::a29f:26ad, 2803:f800:50::6ca2:c2ad, 2a06:98c1:50::ac40:22ad, 108.162.194.173, 162.159.38.173 and 172.64.34.173.

bitcoin-mastery.org - robtex.com