selfstudy.plus - dns.ninja

`selfstudy.plus`

DNSSEC	⚠️ Not signed
A	2606:4700:3034::ac43:c30b^{🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3035::6815:4477^{🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.68.119^{Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.195.11^{🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`duke.ns.cloudflare.com` ⭐
		A	2606:4700:58::adf5:3b6e^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`duke.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c16e^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`duke.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:216e^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`duke.ns.cloudflare.com`
		A	108.162.193.110^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`duke.ns.cloudflare.com`
		A	172.64.33.110^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`duke.ns.cloudflare.com`
		A	173.245.59.110^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`duke.ns.cloudflare.com`
NS	`pam.ns.cloudflare.com`
		A	2606:4700:50::adf5:3a8a^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`pam.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c08a^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`pam.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:208a^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`pam.ns.cloudflare.com`
		A	108.162.192.138^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`pam.ns.cloudflare.com`
		A	172.64.32.138^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`pam.ns.cloudflare.com`
		A	173.245.58.138^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`pam.ns.cloudflare.com`
MX	`aspmx.l.google.com` ⭐
		A	2607:f8b0:4004:c08::1b^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`bi-in-f27.1e100.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:c14::1a^{🇨🇱 Google2800:3f0:4003::/48}
		A	192.178.234.27^{🇺🇸 Google192.178.0.0/15}
			PTR	`ncsclj-in-f27.1e100.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	192.178.223.26^{🇺🇸 Google192.178.223.0/24}
			PTR	`yulhrs-in-f26.1e100.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	`firebase=abvlm-db`
TXT	`firebase=abvlm-dev-db`
TXT	`firebase=iars360-dev`
TXT	`firebase=masimo-db`
TXT	`firebase=masimo-dev`
TXT	`firebase=ss-sample-dev`
TXT	`firebase=wiley-db`
TXT	`google-site-verification=RFfNg1agE_LVYPBL0H9EcF4ufztaLduhWwgOZmqQa1c`
TXT	`google-site-verification=Y48vl2bNO1SNT82gWn3j5BK9tNAtU4EJb4AgqmHgwzc`
TXT	`google-site-verification=gPmv1EWwFDPzMBIkjX2K2Q2BtzMUmcFssRE50YTxtNU`
TXT	`google-site-verification=xWPKL6t_ERB8D5B5c5UPO2Ujl8VgUxa139l2N6NHdXE`
TXT	`v=spf1 include:_spf.firebasemail.com ~all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.68.119, 172.67.195.11
		IPv6 hints	2606:4700:3034::ac43:c30b, 2606:4700:3035::6815:4477
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=204, name=cloudflare-ech.com
SOA	`duke.ns.cloudflare.com`dns@cloudflare.com serial=2409295852

`plus`

	DNSSEC	🔒 Signed (DS record present)
	NS	`v0n0.nic.plus` ⭐
	NS	`v0n1.nic.plus`
	NS	`v0n2.nic.plus`
	NS	`v0n3.nic.plus`
	NS	`v2n0.nic.plus`
	NS	`v2n1.nic.plus`
	SOA	`v0n0.nic.plus`hostmaster@donuts.email serial=1786444839

⚠️ On DNS blocklist: spam-tlds

Same first word

selfstudy.be

selfstudy.de

selfstudy.ai

selfstudy.com

selfstudy.in

selfstudy.pro

selfstudy.guide

selfstudy.plus

selfstudy.co

selfstudy.site

Similar names

slefstudy.blogspot.com

studyself.com

DNS History

20 records (10 active, 10 former)

●NSduke.ns.cloudflare.com2016-12-10 → 2026-08-11 · 2 obs

● 2016-12-10 22:33:16
● 2026-08-11 11:17:56

●NSpam.ns.cloudflare.com2016-12-10 → 2026-08-11 · 2 obs

● 2016-12-10 22:33:16
● 2026-08-11 11:17:56

●MXalt1.aspmx.l.google.com2016-12-10 → 2026-08-11 · 2 obs

● 2016-12-10 22:33:16
● 2026-08-11 11:17:56

●MXalt3.aspmx.l.google.com2016-12-10 → 2026-08-11 · 2 obs

● 2016-12-10 22:33:16
● 2026-08-11 11:17:56

●MXalt4.aspmx.l.google.com2016-12-10 → 2026-08-11 · 2 obs

● 2016-12-10 22:33:16
● 2026-08-11 11:17:56

●MXaspmx.l.google.com2016-12-10 → 2026-08-11 · 2 obs

● 2016-12-10 22:33:16
● 2026-08-11 11:17:56

●A104.21.68.1192026-03-25 → 2026-08-11 · 3 obs

○ 2017-08-31 04:25:24
● 2026-03-25 04:54:48
● 2026-08-11 11:17:56

○A104.25.35.1022016-12-10 → 2016-12-10 · 3 obs

● 2016-12-10 22:33:16
○ 2017-08-31 04:25:24
○ 2026-08-11 11:17:56

○A104.25.36.1022016-12-10 → 2016-12-10 · 3 obs

● 2016-12-10 22:33:16
○ 2017-08-31 04:25:24
○ 2026-08-11 11:17:56

●A172.67.195.112026-03-25 → 2026-08-11 · 3 obs

○ 2017-08-31 04:25:24
● 2026-03-25 04:54:48
● 2026-08-11 11:17:56

○A188.114.96.02026-03-25 → 2026-08-11 · 2 obs

○ 2026-03-25 04:54:48
○ 2026-08-11 11:17:56

○A188.114.97.02026-03-25 → 2026-08-11 · 2 obs

○ 2026-03-25 04:54:48
○ 2026-08-11 11:17:56

○A23.236.62.1472017-08-31 → 2017-08-31 · 4 obs

○ 2016-12-10 22:33:16
● 2017-08-31 04:25:24
○ 2026-03-25 04:54:48
○ 2026-08-11 11:17:56

○A2400:cb00:2048:1::6819:23662016-12-10 → 2016-12-10 · 3 obs

● 2016-12-10 22:33:16
○ 2017-08-31 04:25:24
○ 2026-08-11 11:17:56

○A2400:cb00:2048:1::6819:24662016-12-10 → 2016-12-10 · 3 obs

● 2016-12-10 22:33:16
○ 2017-08-31 04:25:24
○ 2026-08-11 11:17:56

○A2606:4700:3033::ac43:c30b2026-03-25 → 2026-06-14 · 5 obs

○ 2017-08-31 04:25:24
● 2026-03-25 04:54:48
● 2026-06-14 05:45:54
○ 2026-07-11 20:04:50
○ 2026-08-11 11:17:56

●A2606:4700:3034::ac43:c30b2026-07-11 → 2026-08-11 · 3 obs

○ 2026-06-14 05:45:54
● 2026-07-11 20:04:50
● 2026-08-11 11:17:56

●A2606:4700:3035::6815:44772026-03-25 → 2026-08-11 · 3 obs

○ 2017-08-31 04:25:24
● 2026-03-25 04:54:48
● 2026-08-11 11:17:56

○A2a06:98c1:3120::2026-03-25 → 2026-08-11 · 2 obs

○ 2026-03-25 04:54:48
○ 2026-08-11 11:17:56

○A2a06:98c1:3121::2026-03-25 → 2026-08-11 · 2 obs

○ 2026-03-25 04:54:48
○ 2026-08-11 11:17:56

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
plus	v0n0.nic.plus, v0n1.nic.plus, v0n2.nic.plus, v0n3.nic.plus...	-
selfstudy.plus	duke.ns.cloudflare.com, pam.ns.cloudflare.com	-

✅ Authoritative Response

Server:172.64.32.138

NS records: duke.ns.cloudflare.com, pam.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for selfstudy.plus (unsigned zone)

⏱️ Timing

Total: 1196ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.68.119, 172.67.195.11`
AAAA	2	`2606:4700:3035::6815:4477, 2606:4700:3034::ac43:c30b`
NS	2	`duke.ns.cloudflare.com, pam.ns.cloudflare.com`
MX	4	`aspmx.l.google.com (pri: 1), alt3.aspmx.l.google.com (pri: 10)...`
TXT	12	`firebase=abvlm-db, firebase=abvlm-dev-db...`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`duke.ns.cloudflare.com dns.cloudflare.co`

Analysis

IP Addresses

selfstudy.plus points to the four IP addresses 104.21.68.119, 172.67.195.11, 2606:4700:3034::ac43:c30b and 2606:4700:3035::6815:4477.

Additional host names — hairwraps.net, kuaidn.cn, www.fbtc.shop and two others — share IP numbers with selfstudy.plus.

Name Servers

The NS records for selfstudy.plus delegate to duke.ns.cloudflare.com and pam.ns.cloudflare.com.

selfstudy.plus shares its name server setup with other domains, including myvds.ir, shif.ca, rockonnet.com and two others.

At least some of selfstudy.plus's name servers are shared with other domains, for example sjzlhs.cn, longyingfuzhu.com, itconinc.com and two more.

These name servers tend to be deployed in combination with the name servers vasilii.ns.cloudflare.com and martha.ns.cloudflare.com.

Host names with 6 IP numbers:

duke.ns.cloudflare.com maps to 108.162.193.110, 172.64.33.110, 173.245.59.110 and 3 additional IP addresses.

pam.ns.cloudflare.com maps to 108.162.192.138, 172.64.32.138, 173.245.58.138 and 3 additional IP addresses.

Mail Servers

The four mail servers for selfstudy.plus are aspmx.l.google.com, alt1.aspmx.l.google.com, alt3.aspmx.l.google.com and alt4.aspmx.l.google.com.

selfstudy.plus shares mail servers — at least in part — with other domains, including ns500698.ns500758.ns500758.ns500698.ns500758.ns500759.ns500736.ns500736.ns500735.ns500736.ns500576.ns500576.ns500698.ns500698.ns500708.ns500698.ns500652.trackreceptor.com, ns500742.ns500742.ns500671.ns500754.ns500705.ns500705.ns500704.ns500688.ns500671.ns500678.ns500649.ns500666.ns500653.ns500153.tenderladiesbz.com, ns500698.ns500698.ns500698.ns500759.ns500758.ns500698.ns500735.ns500736.ns500698.ns500736.ns500735.ns500708.ns500708.ns500576.ns500576.ns500708.trackreceptor.com and two others.

These mail servers are frequently used alongside the mail servers alt2.aspmx.l.google.com, aspmx2.googlemail.com and aspmx3.googlemail.com, plus two others.

Four hostnames, each resolving to a pair of IP addresses: aspmx.l.google.com directs to 142.251.163.27 and 2607:f8b0:4004:c08::1b; alt1.aspmx.l.google.com directs to 192.178.234.27 and 2800:3f0:4003:c14::1a; alt3.aspmx.l.google.com directs to 192.178.223.26 and 2a00:1450:4009:c0f::1b; alt4.aspmx.l.google.com directs to 172.253.157.27 and 2a00:1450:400c:c23::1b.