proprofsflashcards.com - dns.ninja

`proprofsflashcards.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3030::6815:1822^{🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3035::ac43:d8bc^{🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.24.34^{Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.216.188^{🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`alex.ns.cloudflare.com` ⭐
		A	2606:4700:58::adf5:3b64^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`alex.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c164^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`alex.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2164^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`alex.ns.cloudflare.com`
		A	108.162.193.100^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`alex.ns.cloudflare.com`
		A	172.64.33.100^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`alex.ns.cloudflare.com`
		A	173.245.59.100^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`alex.ns.cloudflare.com`
NS	`olga.ns.cloudflare.com`
		A	2606:4700:50::adf5:3a89^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`olga.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c089^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`olga.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2089^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`olga.ns.cloudflare.com`
		A	108.162.192.137^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`olga.ns.cloudflare.com`
		A	172.64.32.137^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`olga.ns.cloudflare.com`
		A	173.245.58.137^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`olga.ns.cloudflare.com`
TXT	`google-site-verification=klzEOL2p8t7eOVzhdj2hT3QGmL8SKfEHEnm9tNSdUPQ`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.24.34, 172.67.216.188
		IPv6 hints	2606:4700:3030::6815:1822, 2606:4700:3035::ac43:d8bc
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=39, name=cloudflare-ech.com
SOA	`alex.ns.cloudflare.com`dns@cloudflare.com serial=2410191603

`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=1786212419

Same first word

proprofsflashcards.com

DNS History

6 records (6 active, 0 former)

●NSalex.ns.cloudflare.com2026-02-15 → 2026-08-08 · 2 obs

● 2026-02-15 02:15:48
● 2026-08-08 18:11:40

●NSolga.ns.cloudflare.com2026-02-15 → 2026-08-08 · 2 obs

● 2026-02-15 02:15:48
● 2026-08-08 18:11:40

●A104.21.24.342026-02-15 → 2026-08-08 · 2 obs

● 2026-02-15 02:15:48
● 2026-08-08 18:11:40

●A172.67.216.1882026-02-15 → 2026-08-08 · 2 obs

● 2026-02-15 02:15:48
● 2026-08-08 18:11:40

●A2606:4700:3030::6815:18222026-02-15 → 2026-08-08 · 2 obs

● 2026-02-15 02:15:48
● 2026-08-08 18:11:40

●A2606:4700:3035::ac43:d8bc2026-02-15 → 2026-08-08 · 2 obs

● 2026-02-15 02:15:48
● 2026-08-08 18:11:40

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	m.gtld-servers.net, a.gtld-servers.net, j.gtld-servers.net, i.gtld-servers.net...	-
proprofsflashcards.com	alex.ns.cloudflare.com, olga.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.193.100

NS records: alex.ns.cloudflare.com, olga.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for proprofsflashcards.com (unsigned zone)

⏱️ Timing

Total: 125ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.24.34, 172.67.216.188`
AAAA	2	`2606:4700:3035::ac43:d8bc, 2606:4700:3030::6815:1822`
NS	2	`alex.ns.cloudflare.com, olga.ns.cloudflare.com`
TXT	1	`google-site-verification=klzEOL2p8t7eOVz`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`alex.ns.cloudflare.com dns.cloudflare.co`

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

proprofsflashcards.com points to the four IP addresses 104.21.24.34, 172.67.216.188, 2606:4700:3030::6815:1822 and 2606:4700:3035::ac43:d8bc.

aluochbonnita.com, 2040v.com, hnwmhc.com plus two other host names have IP numbers in common with proprofsflashcards.com.

Name Servers

proprofsflashcards.com is served by two delegated name servers, alex.ns.cloudflare.com and olga.ns.cloudflare.com.

The name server configuration of proprofsflashcards.com is shared with other domains, for instance megapixel-ma.com, e-storex.com, adelaidehotwater.net.au and two others.

The name servers of proprofsflashcards.com overlap at least partially with those of other domains — among them manutd.bg, webbchannel.com, scriptz-team.info and two more.

These name servers commonly appear in combination with the name servers lara.ns.cloudflare.com.

Hosts with 6 IP addresses each:

alex.ns.cloudflare.com carries IP addresses 108.162.193.100, 172.64.33.100 and 173.245.59.100, with 3 other addresses beyond those.

olga.ns.cloudflare.com carries IP addresses 108.162.192.137, 172.64.32.137 and 173.245.58.137, with 3 other addresses beyond those.