study.run - dns.ninja

`study.run`

DNSSEC	⚠️ Not signed
A	2606:4700:3031::ac43:d050^{🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3035::6815:457d^{🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.69.125^{Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.208.80^{🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`memphis.ns.cloudflare.com` ⭐
		A	2606:4700:58::a29f:2cbd^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`memphis.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c3bd^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`memphis.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:23bd^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`memphis.ns.cloudflare.com`
		A	108.162.195.189^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`memphis.ns.cloudflare.com`
		A	162.159.44.189^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`memphis.ns.cloudflare.com`
		A	172.64.35.189^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`memphis.ns.cloudflare.com`
NS	`zita.ns.cloudflare.com`
		A	2606:4700:50::adf5:3af3^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`zita.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c0f3^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`zita.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:20f3^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`zita.ns.cloudflare.com`
		A	108.162.192.243^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`zita.ns.cloudflare.com`
		A	172.64.32.243^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`zita.ns.cloudflare.com`
		A	173.245.58.243^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`zita.ns.cloudflare.com`
MX	`eforward1.registrar-servers.com` ⭐
		A	162.255.118.51^{🇺🇸 NAMCHEAP-PH162.255.118.0/24 Namecheap, Inc. 11400 W. Olympic Blvd. Suite 200 Los Angeles, CA 90064 UNITED STATES}
			PTR	`eforward1.registrar-servers.com`
			PTR	`eforward3.registrar-servers.com`
MX	`eforward2.registrar-servers.com` ⭐
		A	162.255.118.52^{🇺🇸 NAMCHEAP-PH162.255.118.0/24 Namecheap, Inc. 11400 W. Olympic Blvd. Suite 200 Los Angeles, CA 90064 UNITED STATES}
			PTR	`eforward2.registrar-servers.com`
MX	`eforward3.registrar-servers.com` ⭐
		A	162.255.118.51^{🇺🇸 NAMCHEAP-PH162.255.118.0/24 Namecheap, Inc. 11400 W. Olympic Blvd. Suite 200 Los Angeles, CA 90064 UNITED STATES}
			PTR	`eforward1.registrar-servers.com`
			PTR	`eforward3.registrar-servers.com`
MX	`eforward4.registrar-servers.com`⁽¹⁵⁾
		A	162.255.118.52^{🇺🇸 NAMCHEAP-PH162.255.118.0/24 Namecheap, Inc. 11400 W. Olympic Blvd. Suite 200 Los Angeles, CA 90064 UNITED STATES}
			PTR	`eforward2.registrar-servers.com`
MX	`eforward5.registrar-servers.com`⁽²⁰⁾
		A	162.255.118.51^{🇺🇸 NAMCHEAP-PH162.255.118.0/24 Namecheap, Inc. 11400 W. Olympic Blvd. Suite 200 Los Angeles, CA 90064 UNITED STATES}
			PTR	`eforward1.registrar-servers.com`
			PTR	`eforward3.registrar-servers.com`
TXT	`v=spf1 include:spf.efwd.registrar-servers.com ~all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.69.125, 172.67.208.80
		IPv6 hints	2606:4700:3031::ac43:d050, 2606:4700:3035::6815:457d
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=151, name=cloudflare-ech.com
SOA	`memphis.ns.cloudflare.com`dns@cloudflare.com serial=2404710312

`run`

	DNSSEC	🔒 Signed (DS record present)
	NS	`v0n0.nic.run` ⭐
	NS	`v0n1.nic.run`
	NS	`v0n2.nic.run`
	NS	`v0n3.nic.run`
	NS	`v2n0.nic.run`
	NS	`v2n1.nic.run`
	SOA	`v0n0.nic.run`hostmaster@donuts.email serial=1781607529

Same first word

study.at

study.mn

study.kiev.ua

study.support

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dusty.codes

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dusty.readthedocs.io

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dusty.page

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dusty.wtf

DNS History

22 records (11 active, 11 former)

○NSdns1.registrar-servers.com2016-12-10 → 2017-09-12 · 4 obs

● 2016-12-10 22:43:40
● 2017-09-12 14:43:24
○ 2026-03-24 01:56:26
○ 2026-06-16 11:45:40

○NSdns1.registrar-servers.com,2016-12-10 → 2017-09-12 · 4 obs

● 2016-12-10 22:43:40
● 2017-09-12 14:43:24
○ 2026-03-24 01:56:26
○ 2026-06-16 11:45:40

○NSdns2.registrar-servers.com2016-12-10 → 2017-09-12 · 4 obs

● 2016-12-10 22:43:40
● 2017-09-12 14:43:24
○ 2026-03-24 01:56:26
○ 2026-06-16 11:45:40

○NSdns3.registrar-servers.com2016-12-10 → 2017-09-12 · 4 obs

● 2016-12-10 22:43:40
● 2017-09-12 14:43:24
○ 2026-03-24 01:56:26
○ 2026-06-16 11:45:40

○NSdns4.registrar-servers.com2016-12-10 → 2017-09-12 · 4 obs

● 2016-12-10 22:43:40
● 2017-09-12 14:43:24
○ 2026-03-24 01:56:26
○ 2026-06-16 11:45:40

○NSdns5.registrar-servers.com2016-12-10 → 2017-09-12 · 4 obs

● 2016-12-10 22:43:40
● 2017-09-12 14:43:24
○ 2026-03-24 01:56:26
○ 2026-06-16 11:45:40

●NSmemphis.ns.cloudflare.com2026-03-24 → 2026-06-16 · 3 obs

○ 2017-09-12 14:43:24
● 2026-03-24 01:56:26
● 2026-06-16 11:45:40

●NSzita.ns.cloudflare.com2026-03-24 → 2026-06-16 · 3 obs

○ 2017-09-12 14:43:24
● 2026-03-24 01:56:26
● 2026-06-16 11:45:40

●MXeforward1.registrar-servers.com2016-12-10 → 2026-06-16 · 2 obs

● 2016-12-10 22:43:40
● 2026-06-16 11:45:40

●MXeforward2.registrar-servers.com2016-12-10 → 2026-06-16 · 2 obs

● 2016-12-10 22:43:40
● 2026-06-16 11:45:40

●MXeforward3.registrar-servers.com2016-12-10 → 2026-06-16 · 2 obs

● 2016-12-10 22:43:40
● 2026-06-16 11:45:40

●MXeforward4.registrar-servers.com2016-12-10 → 2026-06-16 · 2 obs

● 2016-12-10 22:43:40
● 2026-06-16 11:45:40

●MXeforward5.registrar-servers.com2016-12-10 → 2026-06-16 · 2 obs

● 2016-12-10 22:43:40
● 2026-06-16 11:45:40

●A104.21.69.1252026-04-15 → 2026-06-16 · 6 obs

○ 2026-04-11 03:47:46
● 2026-04-15 15:59:14
● 2026-06-03 16:13:42
○ 2026-06-06 02:04:46
● 2026-06-14 02:14:58
● 2026-06-16 11:45:40

●A172.67.208.802026-04-15 → 2026-06-16 · 6 obs

○ 2026-04-11 03:47:46
● 2026-04-15 15:59:14
● 2026-06-03 16:13:42
○ 2026-06-06 02:04:46
● 2026-06-14 02:14:58
● 2026-06-16 11:45:40

○A188.114.96.02026-03-24 → 2026-06-06 · 8 obs

○ 2017-09-12 14:43:24
● 2026-03-24 01:56:26
● 2026-04-11 03:47:46
○ 2026-04-15 15:59:14
○ 2026-06-03 16:13:42
● 2026-06-06 02:04:46
○ 2026-06-14 02:14:58
○ 2026-06-16 11:45:40

○A188.114.97.02026-03-24 → 2026-06-06 · 8 obs

○ 2017-09-12 14:43:24
● 2026-03-24 01:56:26
● 2026-04-11 03:47:46
○ 2026-04-15 15:59:14
○ 2026-06-03 16:13:42
● 2026-06-06 02:04:46
○ 2026-06-14 02:14:58
○ 2026-06-16 11:45:40

○A192.64.119.1622016-12-10 → 2017-09-12 · 4 obs

● 2016-12-10 22:43:40
● 2017-09-12 14:43:24
○ 2026-03-24 01:56:26
○ 2026-06-16 11:45:40

●A2606:4700:3031::ac43:d0502026-04-15 → 2026-06-16 · 9 obs

○ 2026-04-11 03:47:46
● 2026-04-15 15:59:14
● 2026-05-02 06:08:38
○ 2026-05-05 12:34:48
● 2026-05-11 05:19:56
● 2026-06-03 16:13:42
○ 2026-06-06 02:04:46
● 2026-06-14 02:14:58
● 2026-06-16 11:45:40

●A2606:4700:3035::6815:457d2026-04-15 → 2026-06-16 · 9 obs

○A2a06:98c1:3120::2026-03-24 → 2026-06-06 · 11 obs

○ 2017-09-12 14:43:24
● 2026-03-24 01:56:26
● 2026-04-11 03:47:46
○ 2026-04-15 15:59:14
○ 2026-05-02 06:08:38
● 2026-05-05 12:34:48
○ 2026-05-11 05:19:56
○ 2026-06-03 16:13:42
● 2026-06-06 02:04:46
○ 2026-06-14 02:14:58
○ 2026-06-16 11:45:40

○A2a06:98c1:3121::2026-03-24 → 2026-06-06 · 11 obs

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
run	v2n1.nic.run, v0n0.nic.run, v0n3.nic.run, v0n1.nic.run...	12 records
study.run	memphis.ns.cloudflare.com, zita.ns.cloudflare.com	-

✅ Authoritative Response

Server:108.162.195.189

NS records: memphis.ns.cloudflare.com, zita.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for study.run (unsigned zone)

⏱️ Timing

Total: 392ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.208.80, 104.21.69.125`
AAAA	2	`2606:4700:3031::ac43:d050, 2606:4700:3035::6815:457d`
NS	2	`memphis.ns.cloudflare.com, zita.ns.cloudflare.com`
MX	5	`eforward1.registrar-servers.com (pri: 10, eforward2.registrar-servers.com (pri: 10...`
TXT	1	`v=spf1 include:spf.efwd.registrar-server`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`memphis.ns.cloudflare.com dns.cloudflare`

📌 Glue Records Collected

Total: 12

In-bailiwick: 12 (v0n0.nic.run, v0n1.nic.run, v0n2.nic.run...)

Analysis

IP Addresses

study.run directs to four IP numbers, which are 104.21.69.125, 172.67.208.80, 2606:4700:3031::ac43:d050 and 2606:4700:3035::6815:457d.

peaksphere.sbs, drlvwn2281.win789bet777.com, baltimorepsychic.com plus two other host names have IP numbers in common with study.run.

Name Servers

study.run is delegated to two name servers: memphis.ns.cloudflare.com and zita.ns.cloudflare.com.

The name server configuration of study.run is shared with other domains, for instance kgmjr.com, okeige.com, mdtgkg.com and two others.

At least some of study.run's name servers are shared with other domains, for example shirt.at, acavati.com, rondreizen.net and two more.

These name servers tend to be used in conjunction with the name servers venus.ns.cloudflare.com.

Hosts with 6 IP addresses each:

memphis.ns.cloudflare.com resolves to 108.162.195.189, 162.159.44.189, 172.64.35.189 and 3 other IP addresses.

zita.ns.cloudflare.com resolves to 108.162.192.243, 172.64.32.243, 173.245.58.243 and 3 other IP addresses.

Mail Servers

Five mail servers handle study.run: eforward1.registrar-servers.com, eforward2.registrar-servers.com, eforward3.registrar-servers.com and two others.

At least some of the mail servers used by study.run are shared with other domains: claim-offer.com, ktbssolutions.com, camunderground.com and two others among them.

These mail servers often appear in conjunction with the mail servers eforward4.registrar-servers.com, eforward5.registrar-servers.com, eforward6.registrar-servers.com and eforward7.registrar-servers.com.

Host names resolving to a single IP address:

eforward1.registrar-servers.com points to 162.255.118.51.

eforward2.registrar-servers.com points to 162.255.118.52.

eforward3.registrar-servers.com points to 162.255.118.51.

eforward4.registrar-servers.com points to 162.255.118.52.

eforward5.registrar-servers.com points to 162.255.118.51.

Three host names point to 162.255.118.51: eforward1.registrar-servers.com, eforward3.registrar-servers.com and eforward5.registrar-servers.com.

eforward2.registrar-servers.com and eforward4.registrar-servers.com are host names that each point to 162.255.118.52 IP addresses.