`rationalqm.us`

DNSSEC	⚠️ Not signed
A	2606:4700:3036::ac43:b080^{🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3037::6815:1f79^{🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.31.121^{Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.176.128^{🇺🇸 Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`byron.ns.cloudflare.com` ⭐
		A	2606:4700:58::a29f:2c43^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`byron.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c343^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`byron.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2343^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`byron.ns.cloudflare.com`
		A	108.162.195.67^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`byron.ns.cloudflare.com`
		A	162.159.44.67^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`byron.ns.cloudflare.com`
		A	172.64.35.67^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`byron.ns.cloudflare.com`
NS	`mariah.ns.cloudflare.com`
		A	2606:4700:50::a29f:26c8^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`mariah.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c2c8^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`mariah.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:22c8^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`mariah.ns.cloudflare.com`
		A	108.162.194.200^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`mariah.ns.cloudflare.com`
		A	162.159.38.200^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`mariah.ns.cloudflare.com`
		A	172.64.34.200^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`mariah.ns.cloudflare.com`
MX	`mail.rationalqm.us` ⭐
		A	199.250.208.147^{🇺🇸 INMOTION199.250.208.0/21 InMotion Hosting, Inc. 6100 Center Drive Suite 1190 Los Angeles, CA 90045 USA}
			PTR	`biz252.inmotionhosting.com`
TXT	`v=spf1 +mx +a +ip4:199.250.208.120 +include:relay.mailchannels.net ~all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.31.121, 172.67.176.128
		IPv6 hints	2606:4700:3036::ac43:b080, 2606:4700:3037::6815:1f79
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=83, name=cloudflare-ech.com
SOA	`byron.ns.cloudflare.com`dns@cloudflare.com serial=2399645244

`us`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.cctld.us` ⭐
	NS	`b.cctld.us`
	NS	`f.cctld.us`
	NS	`k.cctld.us`
	NS	`m.cctld.us`
	NS	`n.cctld.us`
	NS	`w.cctld.us`
	NS	`x.cctld.us`
	NS	`y.cctld.us`
	SOA	`a.cctld.us`admin@tldns.godaddy serial=1776004016

Previously MX for

rationalqm.us

Subdomains

mail.rationalqm.us

Same first word

rationalqm.us

DNS History

14 records (7 active, 7 former)

●NSbyron.ns.cloudflare.com2026-02-18 → 2026-04-12 · 3 obs

○ 2017-04-06 19:18:52
● 2026-02-18 18:02:42
● 2026-04-12 14:57:44

●NSmariah.ns.cloudflare.com2026-02-18 → 2026-04-12 · 3 obs

○ 2017-04-06 19:18:52
● 2026-02-18 18:02:42
● 2026-04-12 14:57:44

○NSns.inmotionhosting.com2015-05-16 → 2016-09-09 · 4 obs

● 2015-05-16 17:26:02
● 2016-09-09 00:37:26
○ 2017-04-06 19:18:52
○ 2026-04-12 14:57:44

○NSns1.inmotionhosting.com2017-04-06 → 2017-04-06 · 4 obs

○ 2016-09-09 00:37:26
● 2017-04-06 19:18:52
○ 2026-02-18 18:02:42
○ 2026-04-12 14:57:44

○NSns2.inmotionhosting.com2015-05-16 → 2017-04-06 · 4 obs

● 2015-05-16 17:26:02
● 2017-04-06 19:18:52
○ 2026-02-18 18:02:42
○ 2026-04-12 14:57:44

●MXmail.rationalqm.us2026-02-18 → 2026-04-12 · 3 obs

○ 2017-04-06 19:18:52
● 2026-02-18 18:02:42
● 2026-04-12 14:57:44

○MXrationalqm.us2015-05-16 → 2017-04-06 · 4 obs

● 2015-05-16 17:26:02
● 2017-04-06 19:18:52
○ 2026-02-18 18:02:42
○ 2026-04-12 14:57:44

●A104.21.31.1212026-02-22 → 2026-04-12 · 3 obs

○ 2026-02-18 18:02:42
● 2026-02-22 12:11:34
● 2026-04-12 14:57:44

○A172.64.80.12026-02-18 → 2026-02-18 · 4 obs

○ 2017-04-06 19:18:52
● 2026-02-18 18:02:42
○ 2026-02-22 12:11:34
○ 2026-04-12 14:57:44

●A172.67.176.1282026-02-22 → 2026-04-12 · 3 obs

○ 2026-02-18 18:02:42
● 2026-02-22 12:11:34
● 2026-04-12 14:57:44

○A173.247.251.1452015-05-16 → 2016-09-09 · 4 obs

● 2015-05-16 17:26:02
● 2016-09-09 00:37:26
○ 2017-04-06 19:18:52
○ 2026-04-12 14:57:44

○A205.134.254.912017-04-06 → 2017-04-06 · 4 obs

○ 2016-09-09 00:37:26
● 2017-04-06 19:18:52
○ 2026-02-18 18:02:42
○ 2026-04-12 14:57:44

●A2606:4700:3036::ac43:b0802026-02-18 → 2026-04-12 · 3 obs

○ 2017-04-06 19:18:52
● 2026-02-18 18:02:42
● 2026-04-12 14:57:44

●A2606:4700:3037::6815:1f792026-02-18 → 2026-04-12 · 3 obs

○ 2017-04-06 19:18:52
● 2026-02-18 18:02:42
● 2026-04-12 14:57:44

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
us	b.cctld.us, f.cctld.us, k.cctld.us, m.cctld.us...	-
rationalqm.us	mariah.ns.cloudflare.com, byron.ns.cloudflare.com	-

✅ Authoritative Response

Server:108.162.194.200

NS records: mariah.ns.cloudflare.com, byron.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for rationalqm.us (unsigned zone)

⏱️ Timing

Total: 243ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.31.121, 172.67.176.128`
AAAA	2	`2606:4700:3036::ac43:b080, 2606:4700:3037::6815:1f79`
NS	2	`byron.ns.cloudflare.com, mariah.ns.cloudflare.com`
MX	1	`mail.rationalqm.us (pri: 0)`
TXT	1	`v=spf1 +mx +a +ip4:199.250.208.120 +incl`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`byron.ns.cloudflare.com dns.cloudflare.c`

Analysis

Hierarchy

rationalqm.us is the parent of mail.rationalqm.us.

IP Addresses

Four IP numbers are pointed to by rationalqm.us: 2606:4700:3036::ac43:b080, 2606:4700:3037::6815:1f79, 104.21.31.121 and 172.67.176.128.

other host names including ocbrightelectric.com, 23194234005.quizela.com, desasriwijaya.com, mail.northwesternmanagement.com and scrrum.com share IP numbers with rationalqm.us.

Name Servers

rationalqm.us is delegated to two name servers byron.ns.cloudflare.com and mariah.ns.cloudflare.com.

rationalqm.us shares the same name server setup as other domains, for instance ipop.com.tw, ararati.com.br, mazetto.com.br, arary.com.br and nh88.mom.

rationalqm.us at least partially shares name servers with other domains, for instance kd.team, fpotc.com, chutlunds.com, anchorvpn.ru and milwaukeepc.com.

These name servers are commonly used alongside amy.ns.cloudflare.com and corey.ns.cloudflare.com.

Host names with six IP numbers:

Host name byron.ns.cloudflare.com points to: 2606:4700:58::a29f:2c43, 2803:f800:50::6ca2:c343, 2a06:98c1:50::ac40:2343, 108.162.195.67, 162.159.44.67 and 172.64.35.67.

Host name mariah.ns.cloudflare.com points to: 2606:4700:50::a29f:26c8, 2803:f800:50::6ca2:c2c8, 2a06:98c1:50::ac40:22c8, 108.162.194.200, 162.159.38.200 and 172.64.34.200.

Mail Servers

rationalqm.us is handled by a single mail server, mail.rationalqm.us.

mail.rationalqm.us resolves to IP 199.250.208.147.

rationalqm.us - robtex.com

rationalqm.us

us

Previously MX for

Subdomains

Same first word

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

Analysis

Hierarchy

IP Addresses

Name Servers

Mail Servers

`rationalqm.us`

`us`