`optimiselearning.com.cdn.cloudflare.net`

DNSSEC	⚠️ Not signed
A	2606:4700:3033::6815:fe5^{🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3036::ac43:d02a^{🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.15.229^{Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.208.42^{🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
MX	`aspmx.l.google.com` ⭐
		A	2607:f8b0:4004:c08::1a^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`bi-in-f26.1e100.net`
		A	142.251.163.27^{🇺🇸 Google142.251.163.0/24}
			PTR	`wv-in-f27.1e100.net`
MX	`alt1.aspmx.l.google.com`⁽⁵⁾
		A	2800:3f0:4003:c0f::1b^{🇨🇱 Google2800:3f0:4003::/48}
		A	108.177.123.27^{🇺🇸 Google108.177.123.0/24}
			PTR	`lcscld-in-f27.1e100.net`
MX	`alt2.aspmx.l.google.com`⁽⁵⁾
		A	2a00:1450:400b:c02::1a^{🇮🇪 Google2a00:1450:400b::/48}
			PTR	`dj-in-f26.1e100.net`
		A	172.253.116.26^{🇺🇸 Google172.253.116.0/24}
			PTR	`dj-in-f26.1e100.net`
MX	`alt3.aspmx.l.google.com`⁽¹⁰⁾
		A	2a00:1450:4009:c0f::1b^{🇬🇧 Google2a00:1450:4009::/48}
			PTR	`yulhrs-in-f27.1e100.net`
		A	192.178.223.27^{🇺🇸 Google192.178.223.0/24}
			PTR	`yulhrs-in-f27.1e100.net`
MX	`alt4.aspmx.l.google.com`⁽¹⁰⁾
		A	2a00:1450:400c:c23::1b^{🇧🇪 Google2a00:1450:400c::/48}
			PTR	`yubrupd-in-f27.1e100.net`
		A	172.253.157.27^{🇺🇸 Google172.253.0.0/16}
			PTR	`yubrupd-in-f27.1e100.net`
TXT	`google-site-verification=R19jkcydsOl97_TufPb2EhguknXaenZ_IXc8tlO7hL0`
TXT	`v=spf1 include:_spf.createsend.com ~all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.15.229, 172.67.208.42
		IPv6 hints	2606:4700:3033::6815:fe5, 2606:4700:3036::ac43:d02a

`com.cdn.cloudflare.net`

DNSSEC

⚠️ Not signed

Subdomains

www.optimiselearning.com.cdn.cloudflare.net

Same first word

optimiselearning.com

DNS History

10 records (9 active, 1 former)

●MXalt1.aspmx.l.google.com2026-04-15 → 2026-07-26 · 2 obs

● 2026-04-15 02:14:12
● 2026-07-26 19:26:36

●MXalt2.aspmx.l.google.com2026-04-15 → 2026-07-26 · 2 obs

● 2026-04-15 02:14:12
● 2026-07-26 19:26:36

●MXalt3.aspmx.l.google.com2026-04-15 → 2026-07-26 · 2 obs

● 2026-04-15 02:14:12
● 2026-07-26 19:26:36

●MXalt4.aspmx.l.google.com2026-04-15 → 2026-07-26 · 2 obs

● 2026-04-15 02:14:12
● 2026-07-26 19:26:36

●MXaspmx.l.google.com2026-04-15 → 2026-07-26 · 2 obs

● 2026-04-15 02:14:12
● 2026-07-26 19:26:36

●A104.21.15.2292026-04-15 → 2026-07-26 · 2 obs

● 2026-04-15 02:14:12
● 2026-07-26 19:26:36

●A172.67.208.422026-04-15 → 2026-07-26 · 2 obs

● 2026-04-15 02:14:12
● 2026-07-26 19:26:36

○A2606:4700:3032::6815:fe52026-04-15 → 2026-06-11 · 4 obs

● 2026-04-15 02:14:12
● 2026-06-11 04:11:16
○ 2026-07-08 03:31:12
○ 2026-07-26 19:26:36

●A2606:4700:3033::6815:fe52026-07-08 → 2026-07-26 · 3 obs

○ 2026-06-11 04:11:16
● 2026-07-08 03:31:12
● 2026-07-26 19:26:36

●A2606:4700:3036::ac43:d02a2026-04-15 → 2026-07-26 · 2 obs

● 2026-04-15 02:14:12
● 2026-07-26 19:26:36

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cloudflare.net	ns1.cloudflare.net, ns2.cloudflare.net, ns3.cloudflare.net, ns4.cloudflare.net...	-

✅ Authoritative Response

Server:108.162.198.253

NS records: ns1.cloudflare.net, ns2.cloudflare.net, ns3.cloudflare.net, ns4.cloudflare.net, ns5.cloudflare.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for cloudflare.net (unsigned zone)

⏱️ Timing

Total: 1222ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.208.42, 104.21.15.229`
AAAA	2	`2606:4700:3036::ac43:d02a, 2606:4700:3033::6815:fe5`
MX	5	`aspmx.l.google.com (pri: 1), alt3.aspmx.l.google.com (pri: 10)...`
TXT	2	`google-site-verification=R19jkcydsOl97_T, v=spf1 include:_spf.createsend.com ~all`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`

Analysis

Hierarchy

optimiselearning.com.cdn.cloudflare.net is a parent domain of www.optimiselearning.com.cdn.cloudflare.net.

IP Addresses

optimiselearning.com.cdn.cloudflare.net resolves to four IP addresses: 104.21.15.229, 172.67.208.42, 2606:4700:3033::6815:fe5 and 2606:4700:3036::ac43:d02a.

kz-211.lagur.com, ergasti.agency, vos-voyages.fr plus two other host names have IP numbers in common with optimiselearning.com.cdn.cloudflare.net.

Mail Servers

optimiselearning.com.cdn.cloudflare.net is handled by five mail servers: aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com and two others.

At least some of the mail servers used by optimiselearning.com.cdn.cloudflare.net are shared with other domains: shoptotalbabe.com, cdcatalog.ru, patzenhauer.de and two others among them.

These mail servers are often deployed together with alt3.aspmx.l.google.com, alt4.aspmx.l.google.com, aspmx2.googlemail.com and 3 other mail servers.

Host names pointing to two IP addresses:

aspmx.l.google.com resolves to 142.251.163.27 and 2607:f8b0:4004:c08::1a.

alt1.aspmx.l.google.com resolves to 108.177.123.27 and 2800:3f0:4003:c0f::1b.

alt2.aspmx.l.google.com resolves to 172.253.116.26 and 2a00:1450:400b:c02::1a.

alt3.aspmx.l.google.com resolves to 192.178.223.27 and 2a00:1450:4009:c0f::1b.

alt4.aspmx.l.google.com resolves to 172.253.157.27 and 2a00:1450:400c:c23::1b.