studycard.com - dns.ninja

`studycard.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3034::6815:5f7e^{🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3037::ac43:90f4^{🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.95.126^{Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.144.244^{🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`olga.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3a89^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`olga.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c089^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`olga.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2089^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`olga.ns.cloudflare.com`
		A	108.162.192.137^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`olga.ns.cloudflare.com`
		A	172.64.32.137^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`olga.ns.cloudflare.com`
		A	173.245.58.137^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`olga.ns.cloudflare.com`
NS	`rob.ns.cloudflare.com`
		A	2606:4700:58::adf5:3b8c^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`rob.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c18c^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`rob.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:218c^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`rob.ns.cloudflare.com`
		A	108.162.193.140^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`rob.ns.cloudflare.com`
		A	172.64.33.140^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`rob.ns.cloudflare.com`
		A	173.245.59.140^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`rob.ns.cloudflare.com`
MX	`aspmx.l.google.com` ⭐
		A	2607:f8b0:4004:c1f::1a^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`pd-in-f26.1e100.net`
		A	142.250.31.26^{🇺🇸 Google142.250.31.0/24}
			PTR	`bj-in-f26.1e100.net`
MX	`alt1.aspmx.l.google.com`⁽⁵⁾
		A	2800:3f0:4003:c0f::1b^{🇨🇱 Google2800:3f0:4003::/48}
		A	108.177.123.27^{🇺🇸 Google108.177.123.0/24}
			PTR	`lcscld-in-f27.1e100.net`
MX	`alt2.aspmx.l.google.com`⁽⁵⁾
		A	2a00:1450:400b:c02::1a^{🇮🇪 Google2a00:1450:400b::/48}
			PTR	`dj-in-f26.1e100.net`
		A	172.253.116.26^{🇺🇸 Google172.253.116.0/24}
			PTR	`dj-in-f26.1e100.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	192.178.223.27^{🇺🇸 Google192.178.223.0/24}
			PTR	`yulhrs-in-f27.1e100.net`
MX	`alt4.aspmx.l.google.com`⁽¹⁰⁾
		A	2a00:1450:400c:c23::1a^{🇧🇪 Google2a00:1450:400c::/48}
			PTR	`yubrupd-in-f26.1e100.net`
		A	172.253.157.26^{🇺🇸 Google172.253.0.0/16}
			PTR	`yubrupd-in-f26.1e100.net`
MX	`c7deethsydvfkolwmq5puyihnbvqdk75kkgmyhof6lsq3tgskrca.mx-verification.google.com`⁽¹⁵⁾
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.95.126, 172.67.144.244
		IPv6 hints	2606:4700:3034::6815:5f7e, 2606:4700:3037::ac43:90f4
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=214, name=cloudflare-ech.com
SOA	`olga.ns.cloudflare.com`dns@cloudflare.com serial=2408005282

`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=1785887139

Same first word

studycard.com

studycard.mobi

Similar names

cardstudy.net

DNS History

25 records (12 active, 13 former)

○NSns1.parked.com2007-11-14 → 2007-11-14 · 3 obs

● 2007-11-14 03:28:16
○ 2015-06-09 04:52:02
○ 2026-08-04 23:53:50

○NSns1.sedoparking.com2015-06-09 → 2016-11-26 · 5 obs

○ 2007-11-14 03:28:16
● 2015-06-09 04:52:02
● 2016-11-26 10:24:20
○ 2026-03-30 22:00:34
○ 2026-08-04 23:53:50

○NSns2.parked.com2007-11-14 → 2007-11-14 · 3 obs

● 2007-11-14 03:28:16
○ 2015-06-09 04:52:02
○ 2026-08-04 23:53:50

○NSns2.sedoparking.com2015-06-09 → 2016-11-26 · 5 obs

○ 2007-11-14 03:28:16
● 2015-06-09 04:52:02
● 2016-11-26 10:24:20
○ 2026-03-30 22:00:34
○ 2026-08-04 23:53:50

●NSolga.ns.cloudflare.com2026-03-30 → 2026-08-04 · 3 obs

○ 2016-11-26 10:24:20
● 2026-03-30 22:00:34
● 2026-08-04 23:53:50

●NSrob.ns.cloudflare.com2026-03-30 → 2026-08-04 · 3 obs

○ 2016-11-26 10:24:20
● 2026-03-30 22:00:34
● 2026-08-04 23:53:50

●MXalt1.aspmx.l.google.com2026-03-30 → 2026-08-04 · 3 obs

○ 2016-11-26 10:24:20
● 2026-03-30 22:00:34
● 2026-08-04 23:53:50

●MXalt2.aspmx.l.google.com2026-03-30 → 2026-08-04 · 3 obs

○ 2016-11-26 10:24:20
● 2026-03-30 22:00:34
● 2026-08-04 23:53:50

●MXalt3.aspmx.l.google.com2026-03-30 → 2026-08-04 · 3 obs

○ 2016-11-26 10:24:20
● 2026-03-30 22:00:34
● 2026-08-04 23:53:50

●MXalt4.aspmx.l.google.com2026-03-30 → 2026-08-04 · 3 obs

○ 2016-11-26 10:24:20
● 2026-03-30 22:00:34
● 2026-08-04 23:53:50

●MXaspmx.l.google.com2026-03-30 → 2026-08-04 · 3 obs

○ 2016-11-26 10:24:20
● 2026-03-30 22:00:34
● 2026-08-04 23:53:50

●MXc7deethsydvfkolwmq5puyihnbvqdk75kkgmyhof6lsq3tgskrca.mx-verification.google.com2026-03-30 → 2026-08-04 · 3 obs

○ 2016-11-26 10:24:20
● 2026-03-30 22:00:34
● 2026-08-04 23:53:50

○MXlocalhost2016-11-26 → 2016-11-26 · 4 obs

○ 2016-04-11 16:52:30
● 2016-11-26 10:24:20
○ 2026-03-30 22:00:34
○ 2026-08-04 23:53:50

○MXmail.nickstel.com2015-06-09 → 2016-04-11 · 5 obs

○ 2007-11-14 03:28:16
● 2015-06-09 04:52:02
● 2016-04-11 16:52:30
○ 2016-11-26 10:24:20
○ 2026-08-04 23:53:50

●A104.21.95.1262026-03-30 → 2026-08-04 · 3 obs

○ 2016-11-26 10:24:20
● 2026-03-30 22:00:34
● 2026-08-04 23:53:50

●A172.67.144.2442026-03-30 → 2026-08-04 · 3 obs

○ 2016-11-26 10:24:20
● 2026-03-30 22:00:34
● 2026-08-04 23:53:50

○A188.114.96.02026-03-30 → 2026-08-04 · 2 obs

○ 2026-03-30 22:00:34
○ 2026-08-04 23:53:50

○A188.114.97.02026-03-30 → 2026-08-04 · 2 obs

○ 2026-03-30 22:00:34
○ 2026-08-04 23:53:50

●A2606:4700:3034::6815:5f7e2026-06-29 → 2026-08-04 · 3 obs

○ 2026-06-11 09:12:58
● 2026-06-29 12:08:42
● 2026-08-04 23:53:50

○A2606:4700:3035::6815:5f7e2026-03-30 → 2026-06-11 · 5 obs

○ 2016-11-26 10:24:20
● 2026-03-30 22:00:34
● 2026-06-11 09:12:58
○ 2026-06-29 12:08:42
○ 2026-08-04 23:53:50

●A2606:4700:3037::ac43:90f42026-03-30 → 2026-08-04 · 3 obs

○ 2016-11-26 10:24:20
● 2026-03-30 22:00:34
● 2026-08-04 23:53:50

○A2a06:98c1:3120::2026-03-30 → 2026-08-04 · 2 obs

○ 2026-03-30 22:00:34
○ 2026-08-04 23:53:50

○A2a06:98c1:3121::2026-03-30 → 2026-08-04 · 2 obs

○ 2026-03-30 22:00:34
○ 2026-08-04 23:53:50

○A69.46.226.1642007-11-14 → 2007-11-14 · 3 obs

● 2007-11-14 03:28:16
○ 2015-06-09 04:52:02
○ 2026-08-04 23:53:50

○A72.52.4.1192015-06-09 → 2016-11-26 · 5 obs

○ 2007-11-14 03:28:16
● 2015-06-09 04:52:02
● 2016-11-26 10:24:20
○ 2026-03-30 22:00:34
○ 2026-08-04 23:53:50

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	i.gtld-servers.net, m.gtld-servers.net, l.gtld-servers.net, d.gtld-servers.net...	-
studycard.com	olga.ns.cloudflare.com, rob.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.192.137

NS records: olga.ns.cloudflare.com, rob.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for studycard.com (unsigned zone)

⏱️ Timing

Total: 603ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.95.126, 172.67.144.244`
AAAA	2	`2606:4700:3037::ac43:90f4, 2606:4700:3034::6815:5f7e`
NS	2	`olga.ns.cloudflare.com, rob.ns.cloudflare.com`
MX	6	`aspmx.l.google.com (pri: 1), alt3.aspmx.l.google.com (pri: 10)...`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`olga.ns.cloudflare.com dns.cloudflare.co`

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

studycard.com points to the four IP addresses 104.21.95.126, 172.67.144.244, 2606:4700:3034::6815:5f7e and 2606:4700:3037::ac43:90f4.

ei.originei.com, www.atreon.sk, www.cqsxdl.cn plus two other host names have IP numbers in common with studycard.com.

Name Servers

studycard.com has two authoritative name servers — olga.ns.cloudflare.com and rob.ns.cloudflare.com.

The name server configuration of studycard.com is shared with other domains, for instance lukebutler.com, yakarouler.net, telegram.hk and two others.

At least some of studycard.com's name servers are shared with other domains, for example mountaintop.dk, smilesbyzach.com, fictionfactory.org and two more.

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

Hosts with 6 IP addresses each:

olga.ns.cloudflare.com points to 108.162.192.137, 172.64.32.137, 173.245.58.137 and 3 other IP addresses.

rob.ns.cloudflare.com points to 108.162.193.140, 172.64.33.140, 173.245.59.140 and 3 other IP addresses.

Mail Servers

studycard.com uses 6 mail servers for delivery: aspmx.l.google.com, c7deethsydvfkolwmq5puyihnbvqdk75kkgmyhof6lsq3tgskrca.mx-verification.google.com, alt1.aspmx.l.google.com and 3 other.

At least some of the mail servers used by studycard.com are shared with other domains: ns500754.ns500742.ns500731.ns500731.ns500671.ns500671.ns500671.ns500742.ns500671.ns500704.ns500704.ns500688.ns500704.ns500678.ns500678.ns500671.lusty(0x736c7574)z.com, ns500693.ns500693.ns500699.ns500699.ns500693.ns500693.ns500588.ns500699.ns500683.ns500632.ns500632.ns500612.ns500612.ns500612.ns500588.ns500588.dtrkdll.com, ns500742.ns500671.ns500742.ns500731.ns500754.ns500671.ns500649.ns500678.ns500649.ns500666.ns500142.lusty(0x736c7574)z.com and two others among them.

It is common to find these mail servers paired with the mail servers alt2.aspmx.l.google.com, alt3.aspmx.l.google.com and alt4.aspmx.l.google.com, as well as two others.

Host names pointing to two IP addresses:

aspmx.l.google.com resolves to 142.250.31.26 and 2607:f8b0:4004:c1f::1a.

alt1.aspmx.l.google.com resolves to 108.177.123.27 and 2800:3f0:4003:c0f::1b.

alt2.aspmx.l.google.com resolves to 172.253.116.26 and 2a00:1450:400b:c02::1a.

alt3.aspmx.l.google.com resolves to 192.178.223.27 and 2a00:1450:4009:c0f::1b.

alt4.aspmx.l.google.com resolves to 172.253.157.26 and 2a00:1450:400c:c23::1a.