phdstudies.com - dns.ninja

`phdstudies.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3033::6815:3a0c^{🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3036::ac43:99e1^{🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.58.12^{Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.153.225^{🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`dana.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3a69^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`dana.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c069^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`dana.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2069^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`dana.ns.cloudflare.com`
		A	108.162.192.105^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`dana.ns.cloudflare.com`
		A	172.64.32.105^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`dana.ns.cloudflare.com`
		A	173.245.58.105^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`dana.ns.cloudflare.com`
NS	`jay.ns.cloudflare.com`
		A	2606:4700:58::adf5:3b7b^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jay.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c17b^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`jay.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:217b^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`jay.ns.cloudflare.com`
		A	108.162.193.123^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jay.ns.cloudflare.com`
		A	172.64.33.123^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jay.ns.cloudflare.com`
		A	173.245.59.123^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jay.ns.cloudflare.com`
MX	`aspmx.l.google.com` ⭐
		A	2607:f8b0:4004:c21::1b^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`pe-in-f27.1e100.net`
		A	142.251.179.26^{🇺🇸 Google142.251.179.0/24}
			PTR	`pd-in-f26.1e100.net`
MX	`alt1.aspmx.l.google.com`⁽²⁰⁾
		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`⁽²⁰⁾
		A	2a00:1450:400b:c02::1b^{🇮🇪 Google2a00:1450:400b::/48}
			PTR	`dj-in-f27.1e100.net`
		A	172.253.116.27^{🇺🇸 Google172.253.116.0/24}
			PTR	`dj-in-f27.1e100.net`
MX	`aspmx2.googlemail.com`⁽³⁰⁾
		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	`aspmx3.googlemail.com`⁽³⁰⁾
		A	2a00:1450:400b:c02::1a^{🇮🇪 Google2a00:1450:400b::/48}
			PTR	`dj-in-f26.1e100.net`
		A	172.253.116.27^{🇺🇸 Google172.253.116.0/24}
			PTR	`dj-in-f27.1e100.net`
MX	`aspmx4.googlemail.com`⁽³⁰⁾
		A	2a00:1450:4009:c0f::1a^{🇬🇧 Google2a00:1450:4009::/48}
			PTR	`yulhrs-in-f26.1e100.net`
		A	192.178.223.27^{🇺🇸 Google192.178.223.0/24}
			PTR	`yulhrs-in-f27.1e100.net`
MX	`aspmx5.googlemail.com`⁽³⁰⁾
		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`
MX	`_dc-mx.c4abbb9ef96f.phdstudies.com`⁽¹⁰⁰⁾
		A	76.76.21.21^{🇺🇸 Amazon76.76.21.0/24 EC2 Prefix}
TXT	`botify-site-verification=5E7QBJR4gRxUeKby5QEa9Wnc5nC8bUUd`
TXT	`facebook-domain-verification=xcqevjes8objfmvvgknah60fm4ma74`
TXT	`google-site-verification=foQKWpmYTG1NxzOdcEU8ItNUEoWJ6oriT7222q58bJ4`
TXT	`v=spf1 a:dem.masterstudies.com ip4:213.32.153.161 ~all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.58.12, 172.67.153.225
		IPv6 hints	2606:4700:3033::6815:3a0c, 2606:4700:3036::ac43:99e1
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=227, name=cloudflare-ech.com
SOA	`dana.ns.cloudflare.com`dns@cloudflare.com serial=2409118161

`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=1785635547

Previously MX for

www.phdstudies.com

phdstudies.com

Subdomains

stm.phdstudies.com

www.phdstudies.com

Same first word

phdstudies.kr

phdstudies.vn

phdstudies.pl

phdstudies.ng

phdstudies.ca

phdstudies.com

phdstudies.ru

phdstudies.co.uk

phdstudies.in

phdstudies.no

phdstudies.es

phdstudies.com.br

phdstudies.it

phdstudies.gr

phdstudies.se

phdstudies.ro

phdstudies.net

phdstudies.co

phdstudies.nl

DNS History

21 records (14 active, 7 former)

●NSdana.ns.cloudflare.com2026-02-18 → 2026-08-02 · 3 obs

○ 2016-12-04 02:54:56
● 2026-02-18 23:20:44
● 2026-08-02 02:21:22

●NSjay.ns.cloudflare.com2026-02-18 → 2026-08-02 · 3 obs

○ 2016-12-04 02:54:56
● 2026-02-18 23:20:44
● 2026-08-02 02:21:22

○NSns1.eurodns.com2015-08-19 → 2016-12-04 · 4 obs

● 2015-08-19 10:37:36
● 2016-12-04 02:54:56
○ 2026-02-18 23:20:44
○ 2026-08-02 02:21:22

○NSns2.eurodns.com2015-08-19 → 2016-12-04 · 4 obs

● 2015-08-19 10:37:36
● 2016-12-04 02:54:56
○ 2026-02-18 23:20:44
○ 2026-08-02 02:21:22

○NSns3.eurodns.com2015-08-19 → 2016-12-04 · 4 obs

● 2015-08-19 10:37:36
● 2016-12-04 02:54:56
○ 2026-02-18 23:20:44
○ 2026-08-02 02:21:22

○NSns4.eurodns.com2015-08-19 → 2016-12-04 · 4 obs

● 2015-08-19 10:37:36
● 2016-12-04 02:54:56
○ 2026-02-18 23:20:44
○ 2026-08-02 02:21:22

●MX_dc-mx.c4abbb9ef96f.phdstudies.com2026-02-18 → 2026-08-02 · 3 obs

○ 2016-12-04 02:54:56
● 2026-02-18 23:20:44
● 2026-08-02 02:21:22

●MXalt1.aspmx.l.google.com2015-08-19 → 2026-08-02 · 2 obs

● 2015-08-19 10:37:36
● 2026-08-02 02:21:22

●MXalt2.aspmx.l.google.com2015-08-19 → 2026-08-02 · 2 obs

● 2015-08-19 10:37:36
● 2026-08-02 02:21:22

●MXaspmx.l.google.com2015-08-19 → 2026-08-02 · 2 obs

● 2015-08-19 10:37:36
● 2026-08-02 02:21:22

●MXaspmx2.googlemail.com2015-08-19 → 2026-08-02 · 2 obs

● 2015-08-19 10:37:36
● 2026-08-02 02:21:22

●MXaspmx3.googlemail.com2015-08-19 → 2026-08-02 · 2 obs

● 2015-08-19 10:37:36
● 2026-08-02 02:21:22

●MXaspmx4.googlemail.com2015-08-19 → 2026-08-02 · 2 obs

● 2015-08-19 10:37:36
● 2026-08-02 02:21:22

●MXaspmx5.googlemail.com2015-08-19 → 2026-08-02 · 2 obs

● 2015-08-19 10:37:36
● 2026-08-02 02:21:22

○MXphdstudies.com2015-08-19 → 2016-12-04 · 4 obs

● 2015-08-19 10:37:36
● 2016-12-04 02:54:56
○ 2026-02-18 23:20:44
○ 2026-08-02 02:21:22

●A104.21.58.122026-02-18 → 2026-08-02 · 3 obs

○ 2016-12-04 02:54:56
● 2026-02-18 23:20:44
● 2026-08-02 02:21:22

●A172.67.153.2252026-02-18 → 2026-08-02 · 3 obs

○ 2016-12-04 02:54:56
● 2026-02-18 23:20:44
● 2026-08-02 02:21:22

○A193.234.165.2362015-08-19 → 2016-12-04 · 4 obs

● 2015-08-19 10:37:36
● 2016-12-04 02:54:56
○ 2026-02-18 23:20:44
○ 2026-08-02 02:21:22

●A2606:4700:3033::6815:3a0c2026-02-18 → 2026-08-02 · 3 obs

○ 2016-12-04 02:54:56
● 2026-02-18 23:20:44
● 2026-08-02 02:21:22

○A2606:4700:3033::ac43:99e12026-02-18 → 2026-02-18 · 4 obs

○ 2016-12-04 02:54:56
● 2026-02-18 23:20:44
○ 2026-06-28 21:57:36
○ 2026-08-02 02:21:22

●A2606:4700:3036::ac43:99e12026-06-28 → 2026-08-02 · 3 obs

○ 2026-02-18 23:20:44
● 2026-06-28 21:57:36
● 2026-08-02 02:21:22

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	j.gtld-servers.net, e.gtld-servers.net, a.gtld-servers.net, i.gtld-servers.net...	-
phdstudies.com	jay.ns.cloudflare.com, dana.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.193.123

NS records: jay.ns.cloudflare.com, dana.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for phdstudies.com (unsigned zone)

⏱️ Timing

Total: 224ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.58.12, 172.67.153.225`
AAAA	2	`2606:4700:3036::ac43:99e1, 2606:4700:3033::6815:3a0c`
NS	2	`dana.ns.cloudflare.com, jay.ns.cloudflare.com`
MX	8	`aspmx.l.google.com (pri: 10), _dc-mx.c4abbb9ef96f.phdstudies.com (pri:...`
TXT	4	`botify-site-verification=5E7QBJR4gRxUeKb, facebook-domain-verification=xcqevjes8ob...`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`dana.ns.cloudflare.com dns.cloudflare.co`

📌 Glue Records Collected

Total: 12

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

Analysis

Hierarchy

phdstudies.com serves as the parent of stm.phdstudies.com and www.phdstudies.com.

IP Addresses

phdstudies.com directs to four IP numbers, which are 104.21.58.12, 172.67.153.225, 2606:4700:3033::6815:3a0c and 2606:4700:3036::ac43:99e1.

tranny(0x706f726e).space, ns1.casinoskudos.com, earthlab33.com plus two other host names have IP numbers in common with phdstudies.com.

Name Servers

phdstudies.com is served by two delegated name servers, dana.ns.cloudflare.com and jay.ns.cloudflare.com.

The name server configuration of phdstudies.com is shared with other domains, for instance studenttests.it, lawstudies.jp, sport-scholarships.com and two others.

At least some of phdstudies.com's name servers are shared with other domains, for example kchapters.com, spainstore.net, 028-zd.com and two more.

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

Hosts with 6 IP addresses each:

dana.ns.cloudflare.com carries IP addresses 108.162.192.105, 172.64.32.105 and 173.245.58.105, with 3 other addresses beyond those.

jay.ns.cloudflare.com carries IP addresses 108.162.193.123, 172.64.33.123 and 173.245.59.123, with 3 other addresses beyond those.

Mail Servers

phdstudies.com uses 8 mail servers for delivery: aspmx2.googlemail.com, aspmx3.googlemail.com, aspmx4.googlemail.com and 5 other.

At least some of the mail servers used by phdstudies.com are shared with other domains: northsidechristian.academy, coreafrica.org, recmania.com and two others among them.

These mail servers are often deployed together with aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com and 3 other mail servers.

Host names pointing to two IP addresses:

aspmx2.googlemail.com maps to two IP addresses — 108.177.123.27 and 2800:3f0:4003:c0f::1b.

aspmx3.googlemail.com maps to two IP addresses — 172.253.116.27 and 2a00:1450:400b:c02::1a.

aspmx4.googlemail.com maps to two IP addresses — 192.178.223.27 and 2a00:1450:4009:c0f::1a.

aspmx5.googlemail.com maps to two IP addresses — 172.253.157.27 and 2a00:1450:400c:c23::1b.

aspmx.l.google.com maps to two IP addresses — 142.251.179.26 and 2607:f8b0:4004:c21::1b.

alt1.aspmx.l.google.com maps to two IP addresses — 108.177.123.27 and 2800:3f0:4003:c0f::1b.

alt2.aspmx.l.google.com maps to two IP addresses — 172.253.116.27 and 2a00:1450:400b:c02::1b.

Host names resolving to a single IP address:

_dc-mx.c4abbb9ef96f.phdstudies.com points to the IP address 76.76.21.21.

These two host names — aspmx2.googlemail.com and alt1.aspmx.l.google.com — each point to 2800:3f0:4003:c0f::1b IP addresses.

These two host names — aspmx2.googlemail.com and alt1.aspmx.l.google.com — each point to 108.177.123.27 IP addresses.

These two host names — aspmx3.googlemail.com and alt2.aspmx.l.google.com — each point to 172.253.116.27 IP addresses.