visioncourse.com - dns.ninja

`visioncourse.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3032::ac43:d01f^{🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3035::6815:16fc^{🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.22.252^{Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.208.31^{🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`ingrid.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3aa5^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ingrid.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c0a5^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`ingrid.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:20a5^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`ingrid.ns.cloudflare.com`
		A	108.162.192.165^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ingrid.ns.cloudflare.com`
		A	172.64.32.165^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ingrid.ns.cloudflare.com`
		A	173.245.58.165^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ingrid.ns.cloudflare.com`
NS	`yichun.ns.cloudflare.com`
		A	2606:4700:58::adf5:3bf8^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`yichun.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c1f8^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`yichun.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:21f8^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`yichun.ns.cloudflare.com`
		A	108.162.193.248^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`yichun.ns.cloudflare.com`
		A	172.64.33.248^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`yichun.ns.cloudflare.com`
		A	173.245.59.248^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`yichun.ns.cloudflare.com`
MX	`visioncourse-com.mail.protection.outlook.com` ⭐
		A	2a01:111:f403:c902::5^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-sj2pr05cu00505.inbound.protection.outlook.com`
		A	2a01:111:f403:c946::2^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-ch4pr04cu00102.inbound.protection.outlook.com`
		A	2a01:111:f403:f90c::^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-sn1pr03cu00100.inbound.protection.outlook.com`
		A	2a01:111:f403:f90d::1^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-sn1pr0501cu00301.inbound.protection.outlook.com`
		A	40.93.192.1^{🇺🇸 Microsoft40.80.0.0/12}
			PTR	`mail-dm5pr02cu00201.inbound.protection.outlook.com`
		A	52.101.9.26^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-bl0pr02cu00702.inbound.protection.outlook.com`
		A	52.101.40.6^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-cy1pr03cu00106.inbound.protection.outlook.com`
		A	52.101.194.17^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-ch5pr02cu00401.inbound.protection.outlook.com`
TXT	`brevo-code:2787115775cc0a8f735f05cc60400bb6`
TXT	`v=spf1 include:outlook.com include:spf.protection.outlook.com ~all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.22.252, 172.67.208.31
		IPv6 hints	2606:4700:3032::ac43:d01f, 2606:4700:3035::6815:16fc
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=30, name=cloudflare-ech.com
SOA	`ingrid.ns.cloudflare.com`dns@cloudflare.com serial=2409900539

`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=1786523814

Subdomains

web1.visioncourse.com

mail.visioncourse.com

ftp.visioncourse.com

www.visioncourse.com

Same first word

visioncourse.com

Similar names

visionsource.uk

cuisinovores.com

visionsource.mobi

visionsource.com

securovision.com

securovision.net

sourcevision.com

sourcevision.de

coursevision.net

visionsource.it

visionsource.org

DNS History

14 records (7 active, 7 former)

●NSingrid.ns.cloudflare.com2026-02-18 → 2026-08-12 · 3 obs

○ 2018-07-03 23:54:04
● 2026-02-18 10:01:48
● 2026-08-12 09:00:50

○NSns.rackspace.com2015-07-06 → 2018-07-03 · 4 obs

● 2015-07-06 03:00:46
● 2018-07-03 23:54:04
○ 2026-02-18 10:01:48
○ 2026-08-12 09:00:50

○NSns2.rackspace.com2015-07-06 → 2018-07-03 · 4 obs

● 2015-07-06 03:00:46
● 2018-07-03 23:54:04
○ 2026-02-18 10:01:48
○ 2026-08-12 09:00:50

●NSyichun.ns.cloudflare.com2026-02-18 → 2026-08-12 · 3 obs

○ 2018-07-03 23:54:04
● 2026-02-18 10:01:48
● 2026-08-12 09:00:50

○MXmail.global.frontbridge.com2015-07-06 → 2018-07-03 · 4 obs

● 2015-07-06 03:00:46
● 2018-07-03 23:54:04
○ 2026-02-18 10:01:48
○ 2026-08-12 09:00:50

○MXvisioncourse-com.mail.eo.outlook.com2015-07-06 → 2018-07-03 · 4 obs

● 2015-07-06 03:00:46
● 2018-07-03 23:54:04
○ 2026-02-18 10:01:48
○ 2026-08-12 09:00:50

●MXvisioncourse-com.mail.protection.outlook.com2026-02-18 → 2026-08-12 · 3 obs

○ 2018-07-03 23:54:04
● 2026-02-18 10:01:48
● 2026-08-12 09:00:50

○MXvisioncoursellc.mail.eo.outlook.com2015-07-06 → 2018-07-03 · 4 obs

● 2015-07-06 03:00:46
● 2018-07-03 23:54:04
○ 2026-02-18 10:01:48
○ 2026-08-12 09:00:50

●A104.21.22.2522026-02-18 → 2026-08-12 · 3 obs

○ 2018-07-03 23:54:04
● 2026-02-18 10:01:48
● 2026-08-12 09:00:50

●A172.67.208.312026-02-18 → 2026-08-12 · 3 obs

○ 2018-07-03 23:54:04
● 2026-02-18 10:01:48
● 2026-08-12 09:00:50

●A2606:4700:3032::ac43:d01f2026-02-18 → 2026-08-12 · 3 obs

○ 2018-07-03 23:54:04
● 2026-02-18 10:01:48
● 2026-08-12 09:00:50

●A2606:4700:3035::6815:16fc2026-06-21 → 2026-08-12 · 3 obs

○ 2026-06-18 00:50:46
● 2026-06-21 14:01:40
● 2026-08-12 09:00:50

○A2606:4700:3036::6815:16fc2026-02-18 → 2026-06-18 · 5 obs

○ 2018-07-03 23:54:04
● 2026-02-18 10:01:48
● 2026-06-18 00:50:46
○ 2026-06-21 14:01:40
○ 2026-08-12 09:00:50

○A98.129.229.1582015-07-06 → 2018-07-03 · 4 obs

● 2015-07-06 03:00:46
● 2018-07-03 23:54:04
○ 2026-02-18 10:01:48
○ 2026-08-12 09:00:50

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	m.gtld-servers.net, a.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net...	-
visioncourse.com	ingrid.ns.cloudflare.com, yichun.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.192.165

NS records: ingrid.ns.cloudflare.com, yichun.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for visioncourse.com (unsigned zone)

⏱️ Timing

Total: 159ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.22.252, 172.67.208.31`
AAAA	2	`2606:4700:3032::ac43:d01f, 2606:4700:3035::6815:16fc`
NS	2	`ingrid.ns.cloudflare.com, yichun.ns.cloudflare.com`
MX	1	`visioncourse-com.mail.protection.outlook`
TXT	2	`brevo-code:2787115775cc0a8f735f05cc60400, v=spf1 include:outlook.com include:spf.p`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`ingrid.ns.cloudflare.com dns.cloudflare.`

📌 Glue Records Collected

Total: 12

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

Analysis

Hierarchy

web1.visioncourse.com, mail.visioncourse.com, ftp.visioncourse.com and www.visioncourse.com each fall under the parent domain visioncourse.com.

IP Addresses

visioncourse.com has four IP addresses: 104.21.22.252, 172.67.208.31, 2606:4700:3032::ac43:d01f and 2606:4700:3035::6815:16fc.

www.msbroetzner.at, milltech.biz, awpa.cn and two other host names share IP numbers with visioncourse.com.

Name Servers

visioncourse.com is delegated to two name servers: ingrid.ns.cloudflare.com and yichun.ns.cloudflare.com.

visioncourse.com uses the same name servers as several other domains — among them oldtaffer.com, parseplatform.org, bug.nu and two more.

visioncourse.com partially shares its NS delegation with several other domains, including guiadas(0x616e616c)ises.com.br, communicat.com.au, corophim.cam and two others.

These name servers often co-occur with the name servers noel.ns.cloudflare.com.

Hostnames that resolve to 6 IP addresses:

ingrid.ns.cloudflare.com resolves to 108.162.192.165, 172.64.32.165, 173.245.58.165 and 3 other IP addresses.

yichun.ns.cloudflare.com resolves to 108.162.193.248, 172.64.33.248, 173.245.59.248 and 3 other IP addresses.

Mail Servers

Mail for visioncourse.com is handled by a single mail server, visioncourse-com.mail.protection.outlook.com.

visioncourse-com.mail.protection.outlook.com resolves to 8 IP addresses — 40.93.192.1, 52.101.9.26, 52.101.40.6 and 5 others.