`rtceducationfoundation.org`

DNSSEC	⚠️ Not signed
A	2606:4700:3035::ac43:9205^{🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3037::6815:aa6^{🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.10.166^{Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.146.5^{🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`marvin.ns.cloudflare.com` ⭐
		A	2606:4700:58::a29f:2cfb^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`marvin.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c3fb^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`marvin.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:23fb^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`marvin.ns.cloudflare.com`
		A	108.162.195.251^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`marvin.ns.cloudflare.com`
		A	162.159.44.251^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`marvin.ns.cloudflare.com`
		A	172.64.35.251^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`marvin.ns.cloudflare.com`
NS	`pola.ns.cloudflare.com`
		A	2606:4700:50::adf5:3ad6^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`pola.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c0d6^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`pola.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:20d6^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`pola.ns.cloudflare.com`
		A	108.162.192.214^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`pola.ns.cloudflare.com`
		A	172.64.32.214^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`pola.ns.cloudflare.com`
		A	173.245.58.214^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`pola.ns.cloudflare.com`
MX	`mx-dfw.smtp.directrouter.com` ⭐
		A	3.23.202.173^{🇺🇸 Amazon3.20.0.0/14 EC2 CMH prefix}
			PTR	`mx1-ohi.smtp.directrouter.com`
MX	`mx-lon.smtp.directrouter.com`⁽²⁰⁾
		A	34.147.189.117^{🇬🇧 Google34.147.176.0/20}
			PTR	`mx1-lon.smtp.directrouter.com`
TXT	`google-site-verification=a_x4_SPjPx-GBmugE2DGNPakrFxNrihs2GZn_KqKHqs`
TXT	`google-site-verification=doqx3AuBjfgfleq6Yh_QiU4wmNUGnK_8X1nXca9wLdA`
TXT	`v=spf1 +a +mx +ip4:52.15.175.226 +include:relay.mailchannels.net ~all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.10.166, 172.67.146.5
		IPv6 hints	2606:4700:3035::ac43:9205, 2606:4700:3037::6815:aa6
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=227, name=cloudflare-ech.com
SOA	`marvin.ns.cloudflare.com`dns@cloudflare.com serial=2408336369

`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=1784359814

Subdomains

mail.rtceducationfoundation.org

Same first word

rtceducationfoundation.org

DNS History

21 records (8 active, 13 former)

●NSmarvin.ns.cloudflare.com2026-04-14 → 2026-07-18 · 3 obs

○ 2017-04-21 04:48:56
● 2026-04-14 05:24:48
● 2026-07-18 07:49:00

○NSns1.meganameservers.com2015-05-15 → 2016-09-24 · 4 obs

● 2015-05-15 10:23:16
● 2016-09-24 11:12:44
○ 2017-04-21 04:48:56
○ 2026-07-18 07:49:00

○NSns177.websitewelcome.com2017-04-21 → 2017-04-21 · 4 obs

○ 2016-09-24 11:12:44
● 2017-04-21 04:48:56
○ 2026-04-14 05:24:48
○ 2026-07-18 07:49:00

○NSns178.websitewelcome.com2017-04-21 → 2017-04-21 · 4 obs

○ 2016-09-24 11:12:44
● 2017-04-21 04:48:56
○ 2026-04-14 05:24:48
○ 2026-07-18 07:49:00

○NSns2.meganameservers.com2015-05-15 → 2016-09-24 · 4 obs

● 2015-05-15 10:23:16
● 2016-09-24 11:12:44
○ 2017-04-21 04:48:56
○ 2026-07-18 07:49:00

○NSns3.meganameservers.com2015-05-15 → 2016-09-24 · 4 obs

● 2015-05-15 10:23:16
● 2016-09-24 11:12:44
○ 2017-04-21 04:48:56
○ 2026-07-18 07:49:00

●NSpola.ns.cloudflare.com2026-04-14 → 2026-07-18 · 3 obs

○ 2017-04-21 04:48:56
● 2026-04-14 05:24:48
● 2026-07-18 07:49:00

○MXmail.rtceducationfoundation.org2017-04-21 → 2017-04-21 · 4 obs

○ 2016-09-24 11:12:44
● 2017-04-21 04:48:56
○ 2026-04-14 05:24:48
○ 2026-07-18 07:49:00

●MXmx-dfw.smtp.directrouter.com2026-04-14 → 2026-07-18 · 3 obs

○ 2017-04-21 04:48:56
● 2026-04-14 05:24:48
● 2026-07-18 07:49:00

●MXmx-lon.smtp.directrouter.com2026-04-14 → 2026-07-18 · 3 obs

○ 2017-04-21 04:48:56
● 2026-04-14 05:24:48
● 2026-07-18 07:49:00

○MXmx1.megamailservers.com2015-05-15 → 2016-09-24 · 4 obs

● 2015-05-15 10:23:16
● 2016-09-24 11:12:44
○ 2017-04-21 04:48:56
○ 2026-07-18 07:49:00

○MXmx2.megamailservers.com2015-05-15 → 2016-09-24 · 4 obs

● 2015-05-15 10:23:16
● 2016-09-24 11:12:44
○ 2017-04-21 04:48:56
○ 2026-07-18 07:49:00

○MXmx3.megamailservers.com2015-05-15 → 2016-09-24 · 4 obs

● 2015-05-15 10:23:16
● 2016-09-24 11:12:44
○ 2017-04-21 04:48:56
○ 2026-07-18 07:49:00

●A104.21.10.1662026-04-14 → 2026-07-18 · 3 obs

○ 2017-04-21 04:48:56
● 2026-04-14 05:24:48
● 2026-07-18 07:49:00

●A172.67.146.52026-04-14 → 2026-07-18 · 3 obs

○ 2017-04-21 04:48:56
● 2026-04-14 05:24:48
● 2026-07-18 07:49:00

○A192.185.146.1382017-04-21 → 2017-04-21 · 4 obs

○ 2016-09-24 11:12:44
● 2017-04-21 04:48:56
○ 2026-04-14 05:24:48
○ 2026-07-18 07:49:00

○A216.251.33.1812015-05-15 → 2016-09-24 · 4 obs

● 2015-05-15 10:23:16
● 2016-09-24 11:12:44
○ 2017-04-21 04:48:56
○ 2026-07-18 07:49:00

○A2606:4700:3030::6815:aa62026-04-14 → 2026-06-01 · 5 obs

○ 2017-04-21 04:48:56
● 2026-04-14 05:24:48
● 2026-06-01 05:49:30
○ 2026-07-08 17:04:56
○ 2026-07-18 07:49:00

○A2606:4700:3031::ac43:92052026-04-14 → 2026-06-01 · 5 obs

○ 2017-04-21 04:48:56
● 2026-04-14 05:24:48
● 2026-06-01 05:49:30
○ 2026-07-08 17:04:56
○ 2026-07-18 07:49:00

●A2606:4700:3035::ac43:92052026-07-08 → 2026-07-18 · 3 obs

○ 2026-06-01 05:49:30
● 2026-07-08 17:04:56
● 2026-07-18 07:49:00

●A2606:4700:3037::6815:aa62026-07-08 → 2026-07-18 · 3 obs

○ 2026-06-01 05:49:30
● 2026-07-08 17:04:56
● 2026-07-18 07:49:00

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
org	b0.org.afilias-nst.org, b2.org.afilias-nst.org, d0.org.afilias-nst.org	-
rtceducationfoundation.org	pola.ns.cloudflare.com, marvin.ns.cloudflare.com	-

✅ Authoritative Response

Server:162.159.44.251

NS records: pola.ns.cloudflare.com, marvin.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for rtceducationfoundation.org (unsigned zone)

⏱️ Timing

Total: 382ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.146.5, 104.21.10.166`
AAAA	2	`2606:4700:3035::ac43:9205, 2606:4700:3037::6815:aa6`
NS	2	`marvin.ns.cloudflare.com, pola.ns.cloudflare.com`
MX	2	`mx-dfw.smtp.directrouter.com (pri: 10), mx-lon.smtp.directrouter.com (pri: 20)`
TXT	3	`google-site-verification=a_x4_SPjPx-GBmu, google-site-verification=doqx3AuBjfgfleq...`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`marvin.ns.cloudflare.com dns.cloudflare.`

Analysis

Hierarchy

rtceducationfoundation.org is the parent zone for mail.rtceducationfoundation.org.

IP Addresses

rtceducationfoundation.org resolves to four IP addresses: 104.21.10.166, 172.67.146.5, 2606:4700:3035::ac43:9205 and 2606:4700:3037::6815:aa6.

Among the host names that share IP numbers with rtceducationfoundation.org are xjosh.com, cloudnclear.co.il, apasl2024kyoto.org and two others.

Name Servers

The NS records for rtceducationfoundation.org delegate to marvin.ns.cloudflare.com and pola.ns.cloudflare.com.

rtceducationfoundation.org has the same name server delegation as a number of other domains, such as aalrr.com, clubmatescruising.com, codesnipeet.com and two more.

rtceducationfoundation.org partially shares its NS delegation with several other domains, including vulkanos.ru, addlins.net, acteches.com and two others.

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

Host names resolving to 6 IP numbers:

marvin.ns.cloudflare.com maps to 108.162.195.251, 162.159.44.251, 172.64.35.251 and 3 additional IP addresses.

pola.ns.cloudflare.com maps to 108.162.192.214, 172.64.32.214, 173.245.58.214 and 3 additional IP addresses.

Mail Servers

The MX records for rtceducationfoundation.org point to two mail servers: mx-dfw.smtp.directrouter.com and mx-lon.smtp.directrouter.com.

rtceducationfoundation.org has the same mail server arrangement as a number of other domains, for example jacobthompson.com, gohogs.net, plattsmouthanimalshelter.com and two more.

rtceducationfoundation.org shares at least some of its mail servers with other domains — for example nic-tone.ro, alexholiday.com, raoufimd.com and two more.

mx-dfw.smtp.directrouter.com resolves to 3.23.202.173. mx-lon.smtp.directrouter.com resolves to 34.147.189.117. Both host names point to a single IP number.

rtceducationfoundation.org - robtex.com