`masteringmemo.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3031::6815:4a4c^{🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3031::ac43:c873^{🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.74.76^{Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.200.115^{🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`adaline.ns.cloudflare.com` ⭐
		A	2606:4700:50::a29f:2631^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`adaline.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c231^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`adaline.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2231^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`adaline.ns.cloudflare.com`
		A	108.162.194.49^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`adaline.ns.cloudflare.com`
		A	162.159.38.49^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`adaline.ns.cloudflare.com`
		A	172.64.34.49^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`adaline.ns.cloudflare.com`
NS	`jobs.ns.cloudflare.com`
		A	2606:4700:58::adf5:3bb7^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jobs.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c1b7^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`jobs.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:21b7^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`jobs.ns.cloudflare.com`
		A	108.162.193.183^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jobs.ns.cloudflare.com`
		A	172.64.33.183^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jobs.ns.cloudflare.com`
		A	173.245.59.183^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jobs.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.74.76, 172.67.200.115
		IPv6 hints	2606:4700:3031::6815:4a4c, 2606:4700:3031::ac43:c873
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=24, name=cloudflare-ech.com
SOA	`adaline.ns.cloudflare.com`dns@cloudflare.com serial=2397349198

`com`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.gtld-servers.net` ⭐
	NS	`b.gtld-servers.net`
	NS	`c.gtld-servers.net`
	NS	`d.gtld-servers.net`
	NS	`e.gtld-servers.net`
	NS	`f.gtld-servers.net`
	NS	`g.gtld-servers.net`
	NS	`h.gtld-servers.net`
	NS	`i.gtld-servers.net`
	NS	`j.gtld-servers.net`
	NS	`k.gtld-servers.net`
	NS	`l.gtld-servers.net`
	NS	`m.gtld-servers.net`
	SOA	`a.gtld-servers.net`nstld@verisign-grs.com serial=1775146877

Subdomains

track.masteringmemo.com

Same first word

masteringmemo.com

DNS History

6 records (6 active, 0 former)

●NSadaline.ns.cloudflare.com2026-03-30 → 2026-04-02 · 2 obs

● 2026-03-30 19:18:12
● 2026-04-02 16:35:52

●NSjobs.ns.cloudflare.com2026-03-30 → 2026-04-02 · 2 obs

● 2026-03-30 19:18:12
● 2026-04-02 16:35:52

●A104.21.74.762026-03-30 → 2026-04-02 · 2 obs

● 2026-03-30 19:18:12
● 2026-04-02 16:35:52

●A172.67.200.1152026-03-30 → 2026-04-02 · 2 obs

● 2026-03-30 19:18:12
● 2026-04-02 16:35:52

●A2606:4700:3031::6815:4a4c2026-03-30 → 2026-04-02 · 2 obs

● 2026-03-30 19:18:12
● 2026-04-02 16:35:52

●A2606:4700:3031::ac43:c8732026-03-30 → 2026-04-02 · 2 obs

● 2026-03-30 19:18:12
● 2026-04-02 16:35:52

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, c.gtld-servers.net, f.gtld-servers.net, g.gtld-servers.net...	-
masteringmemo.com	jobs.ns.cloudflare.com, adaline.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.193.183

NS records: jobs.ns.cloudflare.com, adaline.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for masteringmemo.com (unsigned zone)

⏱️ Timing

Total: 385ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.200.115, 104.21.74.76`
AAAA	2	`2606:4700:3031::ac43:c873, 2606:4700:3031::6815:4a4c`
NS	2	`adaline.ns.cloudflare.com, jobs.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`adaline.ns.cloudflare.com dns.cloudflare`

📌 Glue Records Collected

Total: 12

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

Analysis

Hierarchy

masteringmemo.com is parent of track.masteringmemo.com.

IP Addresses

masteringmemo.com points to four IP numbers: 2606:4700:3031::6815:4a4c, 2606:4700:3031::ac43:c873, 104.21.74.76 and 172.67.200.115.

Other host names, for instance emap.com.br, zixub.com, approvedexperiences.work, omni.me and adamikinsurance.com share IP numbers with masteringmemo.com.

Name Servers

masteringmemo.com's delegation is to two name servers adaline.ns.cloudflare.com and jobs.ns.cloudflare.com.

masteringmemo.com shares the same name server configuration as other domains, such as (0x706f726e)meds.com, memopronow.com, primememonow.com, mastersofmemo.com and ygim.or.id.

masteringmemo.com at least partially shares its name servers with other domains, for instance load-lok.de, absolutetennis.co.uk, 1celuapuestas.xyz, kd14.org and 94ido.com.

these name servers are commonly used together with greg.ns.cloudflare.com, logan.ns.cloudflare.com, sean.ns.cloudflare.com and robert.ns.cloudflare.com.

Host names with six IP numbers:

adaline.ns.cloudflare.com points to: 2606:4700:50::a29f:2631, 2803:f800:50::6ca2:c231, 2a06:98c1:50::ac40:2231, 108.162.194.49, 162.159.38.49 and 172.64.34.49.

jobs.ns.cloudflare.com points to: 2606:4700:58::adf5:3bb7, 2803:f800:50::6ca2:c1b7, 2a06:98c1:50::ac40:21b7, 108.162.193.183, 172.64.33.183 and 173.245.59.183.

masteringmemo.com - robtex.com