feifanstudy.com - dns.ninja

`feifanstudy.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3032::ac43:9741^{🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3033::6815:9c^{🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.0.156^{Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.151.65^{🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`bailey.ns.cloudflare.com` ⭐
		A	2606:4700:50::a29f:2629^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`bailey.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c229^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`bailey.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2229^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`bailey.ns.cloudflare.com`
		A	108.162.194.41^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`bailey.ns.cloudflare.com`
		A	162.159.38.41^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`bailey.ns.cloudflare.com`
		A	172.64.34.41^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`bailey.ns.cloudflare.com`
NS	`kenneth.ns.cloudflare.com`
		A	2606:4700:58::a29f:2c29^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`kenneth.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c329^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`kenneth.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2329^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`kenneth.ns.cloudflare.com`
		A	108.162.195.41^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`kenneth.ns.cloudflare.com`
		A	162.159.44.41^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`kenneth.ns.cloudflare.com`
		A	172.64.35.41^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`kenneth.ns.cloudflare.com`
MX	`aspmx.l.google.com` ⭐
		A	2607:f8b0:4004:c0b::1b^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`bj-in-f27.1e100.net`
		A	64.233.180.27^{🇺🇸 Google64.233.180.0/24}
			PTR	`on-in-f27.1e100.net`
			PTR	`pe-in-f27.1e100.net`
MX	`alt1.aspmx.l.google.com`⁽⁵⁾
		A	2800:3f0:4003:c0f::1a^{🇨🇱 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::1a^{🇬🇧 Google2a00:1450:4009::/48}
			PTR	`yulhrs-in-f26.1e100.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	172.253.157.26^{🇺🇸 Google172.253.0.0/16}
			PTR	`yubrupd-in-f26.1e100.net`
TXT	`google-site-verification=AsW3yhxxSbAF9wYVQ25DW6m1YCqkD7i-WJbeLnjNElY`
HTTPS	HTTP/2 ✓ hints match
		IPv4 hints	104.21.0.156, 172.67.151.65
		IPv6 hints	2606:4700:3032::ac43:9741, 2606:4700:3033::6815:9c
SOA	`bailey.ns.cloudflare.com`dns@cloudflare.com serial=2405861184

`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=1782732160

Same first word

feifanstudy.com

DNS History

22 records (11 active, 11 former)

●NSbailey.ns.cloudflare.com2026-04-16 → 2026-06-29 · 3 obs

○ 2017-04-03 12:36:28
● 2026-04-16 18:13:56
● 2026-06-29 11:51:58

●NSkenneth.ns.cloudflare.com2026-04-16 → 2026-06-29 · 3 obs

○ 2017-04-03 12:36:28
● 2026-04-16 18:13:56
● 2026-06-29 11:51:58

○NSns1.bluehost.com2015-08-16 → 2016-09-10 · 4 obs

● 2015-08-16 14:13:08
● 2016-09-10 12:45:12
○ 2017-04-03 12:36:28
○ 2026-06-29 11:51:58

○NSns2.bluehost.com2015-08-16 → 2016-09-10 · 4 obs

● 2015-08-16 14:13:08
● 2016-09-10 12:45:12
○ 2017-04-03 12:36:28
○ 2026-06-29 11:51:58

○NSns31.domaincontrol.com2017-04-03 → 2017-04-03 · 4 obs

○ 2016-09-10 12:45:12
● 2017-04-03 12:36:28
○ 2026-04-16 18:13:56
○ 2026-06-29 11:51:58

○NSns32.domaincontrol.com2017-04-03 → 2017-04-03 · 4 obs

○ 2016-09-10 12:45:12
● 2017-04-03 12:36:28
○ 2026-04-16 18:13:56
○ 2026-06-29 11:51:58

●MXalt1.aspmx.l.google.com2015-08-16 → 2026-06-29 · 2 obs

● 2015-08-16 14:13:08
● 2026-06-29 11:51:58

●MXalt2.aspmx.l.google.com2015-08-16 → 2026-06-29 · 2 obs

● 2015-08-16 14:13:08
● 2026-06-29 11:51:58

●MXalt3.aspmx.l.google.com2015-08-16 → 2026-06-29 · 2 obs

● 2015-08-16 14:13:08
● 2026-06-29 11:51:58

●MXalt4.aspmx.l.google.com2015-08-16 → 2026-06-29 · 2 obs

● 2015-08-16 14:13:08
● 2026-06-29 11:51:58

●MXaspmx.l.google.com2015-08-16 → 2026-06-29 · 2 obs

● 2015-08-16 14:13:08
● 2026-06-29 11:51:58

●A104.21.0.1562026-04-16 → 2026-06-29 · 6 obs

○ 2017-04-03 12:36:28
● 2026-04-16 18:13:56
● 2026-04-20 22:38:46
○ 2026-04-22 11:53:52
● 2026-05-01 11:33:14
● 2026-06-29 11:51:58

○A13.91.62.872017-04-03 → 2017-04-03 · 4 obs

○ 2016-09-10 12:45:12
● 2017-04-03 12:36:28
○ 2026-04-16 18:13:56
○ 2026-06-29 11:51:58

●A172.67.151.652026-04-16 → 2026-06-29 · 6 obs

○ 2017-04-03 12:36:28
● 2026-04-16 18:13:56
● 2026-04-20 22:38:46
○ 2026-04-22 11:53:52
● 2026-05-01 11:33:14
● 2026-06-29 11:51:58

○A188.114.96.02026-04-22 → 2026-04-22 · 4 obs

○ 2026-04-20 22:38:46
● 2026-04-22 11:53:52
○ 2026-05-01 11:33:14
○ 2026-06-29 11:51:58

○A188.114.97.02026-04-22 → 2026-04-22 · 4 obs

○ 2026-04-20 22:38:46
● 2026-04-22 11:53:52
○ 2026-05-01 11:33:14
○ 2026-06-29 11:51:58

●A2606:4700:3032::ac43:97412026-04-16 → 2026-06-29 · 6 obs

○ 2017-04-03 12:36:28
● 2026-04-16 18:13:56
● 2026-04-20 22:38:46
○ 2026-04-22 11:53:52
● 2026-05-01 11:33:14
● 2026-06-29 11:51:58

●A2606:4700:3033::6815:9c2026-06-29 → 2026-06-29 · 3 obs

○ 2026-06-04 02:54:44
● 2026-06-29 06:38:50
● 2026-06-29 11:51:58

○A2606:4700:3035::6815:9c2026-04-16 → 2026-06-04 · 8 obs

○ 2017-04-03 12:36:28
● 2026-04-16 18:13:56
● 2026-04-20 22:38:46
○ 2026-04-22 11:53:52
● 2026-05-01 11:33:14
● 2026-06-04 02:54:44
○ 2026-06-29 06:38:50
○ 2026-06-29 11:51:58

○A2a06:98c1:3120::2026-04-22 → 2026-04-22 · 4 obs

○ 2026-04-20 22:38:46
● 2026-04-22 11:53:52
○ 2026-05-01 11:33:14
○ 2026-06-29 11:51:58

○A2a06:98c1:3121::2026-04-22 → 2026-04-22 · 4 obs

○ 2026-04-20 22:38:46
● 2026-04-22 11:53:52
○ 2026-05-01 11:33:14
○ 2026-06-29 11:51:58

○A66.147.244.2212015-08-16 → 2016-09-10 · 4 obs

● 2015-08-16 14:13:08
● 2016-09-10 12:45:12
○ 2017-04-03 12:36:28
○ 2026-06-29 11:51:58

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	h.gtld-servers.net, j.gtld-servers.net, i.gtld-servers.net, d.gtld-servers.net...	-
feifanstudy.com	bailey.ns.cloudflare.com, kenneth.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.194.41

NS records: bailey.ns.cloudflare.com, kenneth.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for feifanstudy.com (unsigned zone)

⏱️ Timing

Total: 452ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.0.156, 172.67.151.65`
AAAA	2	`2606:4700:3032::ac43:9741, 2606:4700:3033::6815:9c`
NS	2	`bailey.ns.cloudflare.com, kenneth.ns.cloudflare.com`
MX	5	`aspmx.l.google.com (pri: 1), alt3.aspmx.l.google.com (pri: 10)...`
TXT	1	`google-site-verification=AsW3yhxxSbAF9wY`
HTTPS	1	`{"priority":1,"target":".","alpn":["h2"]`
SOA	1	`bailey.ns.cloudflare.com dns.cloudflare.`

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

feifanstudy.com has four IP addresses: 104.21.0.156, 172.67.151.65, 2606:4700:3032::ac43:9741 and 2606:4700:3033::6815:9c.

Among the host names that share IP numbers with feifanstudy.com are moscow-lingerie.com, n8n.quantriso.vn, popcoin.online and two others.

Name Servers

Two name servers handle the delegation for feifanstudy.com: bailey.ns.cloudflare.com and kenneth.ns.cloudflare.com.

feifanstudy.com has the same name server delegation as a number of other domains, such as 762k.com, infiniterecall.com, study-diy.com and two more.

feifanstudy.com has at least partial name server overlap with other domains, such as bergdorfs.ch, engm.top, conki.app and two others.

These name servers tend to appear together with the name servers anahi.ns.cloudflare.com, bjorn.ns.cloudflare.com and junade.ns.cloudflare.com.

Host names resolving to 6 IP numbers:

bailey.ns.cloudflare.com resolves to 108.162.194.41, 162.159.38.41 and 172.64.34.41 among others, with 3 other IP addresses in total.

kenneth.ns.cloudflare.com resolves to 108.162.195.41, 162.159.44.41 and 172.64.35.41 among others, with 3 other IP addresses in total.

Mail Servers

Mail for feifanstudy.com is handled by five mail servers, namely aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com and two others.

feifanstudy.com shares at least some of its mail servers with other domains — for example ytti.fi, whittenarchitects.com, bitesite.ca and two more.

It is common to find these mail servers paired with mail servers alt3.aspmx.l.google.com, alt4.aspmx.l.google.com, aspmx2.googlemail.com and 3 more.

Hosts with two IP numbers each:

aspmx.l.google.com resolves to two addresses: 64.233.180.27 and 2607:f8b0:4004:c0b::1b.

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

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

alt3.aspmx.l.google.com resolves to two addresses: 192.178.223.26 and 2a00:1450:4009:c0f::1a.

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