`gradsource.com`

DNSSEC	⚠️ Not signed
A	2606:4700::6812:699^{🇺🇸 Cloudflare2606:4700::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700::6812:799^{🇺🇸 Cloudflare2606:4700::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.18.6.153^{Cloudflare104.18.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.18.7.153^{Cloudflare104.18.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`adaline.ns.cloudflare.com` ⭐
		A	2606:4700:50::a29f:2631^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`adaline.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c231^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`adaline.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2231^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`adaline.ns.cloudflare.com`
		A	108.162.194.49^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`adaline.ns.cloudflare.com`
		A	162.159.38.49^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`adaline.ns.cloudflare.com`
		A	172.64.34.49^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`adaline.ns.cloudflare.com`
NS	`john.ns.cloudflare.com`
		A	2606:4700:58::adf5:3bb9^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`john.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c1b9^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`john.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:21b9^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`john.ns.cloudflare.com`
		A	108.162.193.185^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`john.ns.cloudflare.com`
		A	172.64.33.185^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`john.ns.cloudflare.com`
		A	173.245.59.185^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`john.ns.cloudflare.com`
MX	`us-smtp-inbound-1.mimecast.com` ⭐
		A	170.10.128.141^{🇺🇸 Mimecast-NA170.10.128.0/23 191 Spring St Lexington MA 02421 United States}
			PTR	`us-smtp-inbound-1.mimecast.com`
			PTR	`us-smtp-inbound-2.mimecast.com`
		A	170.10.128.221^{🇺🇸 Mimecast-NA170.10.128.0/23 191 Spring St Lexington MA 02421 United States}
			PTR	`us-smtp-inbound-1.mimecast.com`
			PTR	`us-smtp-inbound-2.mimecast.com`
		A	170.10.128.242^{🇺🇸 Mimecast-NA170.10.128.0/23 191 Spring St Lexington MA 02421 United States}
			PTR	`us-smtp-inbound-1.mimecast.com`
			PTR	`us-smtp-inbound-2.mimecast.com`
		A	170.10.132.141^{🇺🇸 Mimecast-NA170.10.132.0/23 191 Spring St Lexington MA 02421 United States}
			PTR	`us-smtp-inbound-1.mimecast.com`
			PTR	`us-smtp-inbound-2.mimecast.com`
		A	170.10.132.221^{🇺🇸 Mimecast-NA170.10.132.0/23 191 Spring St Lexington MA 02421 United States}
			PTR	`us-smtp-inbound-1.mimecast.com`
			PTR	`us-smtp-inbound-2.mimecast.com`
		A	170.10.132.242^{🇺🇸 Mimecast-NA170.10.132.0/23 191 Spring St Lexington MA 02421 United States}
			PTR	`us-smtp-inbound-1.mimecast.com`
			PTR	`us-smtp-inbound-2.mimecast.com`
MX	`us-smtp-inbound-2.mimecast.com`⁽²⁰⁰⁾
		A	170.10.128.141^{🇺🇸 Mimecast-NA170.10.128.0/23 191 Spring St Lexington MA 02421 United States}
			PTR	`us-smtp-inbound-1.mimecast.com`
			PTR	`us-smtp-inbound-2.mimecast.com`
		A	170.10.128.221^{🇺🇸 Mimecast-NA170.10.128.0/23 191 Spring St Lexington MA 02421 United States}
			PTR	`us-smtp-inbound-1.mimecast.com`
			PTR	`us-smtp-inbound-2.mimecast.com`
		A	170.10.128.242^{🇺🇸 Mimecast-NA170.10.128.0/23 191 Spring St Lexington MA 02421 United States}
			PTR	`us-smtp-inbound-1.mimecast.com`
			PTR	`us-smtp-inbound-2.mimecast.com`
		A	170.10.132.141^{🇺🇸 Mimecast-NA170.10.132.0/23 191 Spring St Lexington MA 02421 United States}
			PTR	`us-smtp-inbound-1.mimecast.com`
			PTR	`us-smtp-inbound-2.mimecast.com`
		A	170.10.132.221^{🇺🇸 Mimecast-NA170.10.132.0/23 191 Spring St Lexington MA 02421 United States}
			PTR	`us-smtp-inbound-1.mimecast.com`
			PTR	`us-smtp-inbound-2.mimecast.com`
		A	170.10.132.242^{🇺🇸 Mimecast-NA170.10.132.0/23 191 Spring St Lexington MA 02421 United States}
			PTR	`us-smtp-inbound-1.mimecast.com`
			PTR	`us-smtp-inbound-2.mimecast.com`
TXT	`MS=ms54997326`
TXT	`d6vl59zlxdm57n9wv5ptcmp3ygjgzsyh`
TXT	`v=spf1 include:swiftpost.net ~all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4	104.18.6.153, 104.18.7.153
		IPv6	2606:4700::6812:699, 2606:4700::6812:799
SOA	`adaline.ns.cloudflare.com`dns@cloudflare.com serial=2397750349

`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=1771291435

Subdomains

www.gradsource.com

Same first word

gradsource.com

Similar names

decorsugar.com

decorarugs.com

guardscore.mobi

guardscore.org

guardscore.net

DNS History

15 records (8 active, 7 former)

●NSadaline.ns.cloudflare.com2026-02-16 → 2026-03-13 · 3 obs

○ 2020-01-27 08:14:22
● 2026-02-16 08:50:28
● 2026-03-13 09:36:40

●NSjohn.ns.cloudflare.com2026-02-16 → 2026-03-13 · 3 obs

○ 2020-01-27 08:14:22
● 2026-02-16 08:50:28
● 2026-03-13 09:36:40

○NSns5.swiftpost.net2015-05-14 → 2020-01-27 · 4 obs

● 2015-05-14 16:31:44
● 2020-01-27 08:14:22
○ 2026-02-16 08:50:28
○ 2026-03-13 09:36:40

○NSns6.swiftpost.net2015-05-14 → 2020-01-27 · 4 obs

● 2015-05-14 16:31:44
● 2020-01-27 08:14:22
○ 2026-02-16 08:50:28
○ 2026-03-13 09:36:40

○MXquinstreet.com.mail5.psmtp.com2015-05-14 → 2015-05-14 · 3 obs

● 2015-05-14 16:31:44
○ 2015-10-10 22:34:52
○ 2026-03-13 09:36:40

○MXquinstreet.com.mail6.psmtp.com2015-05-14 → 2015-05-14 · 3 obs

● 2015-05-14 16:31:44
○ 2015-10-10 22:34:52
○ 2026-03-13 09:36:40

○MXquinstreet.com.mail7.psmtp.com2015-05-14 → 2015-05-14 · 3 obs

● 2015-05-14 16:31:44
○ 2015-10-10 22:34:52
○ 2026-03-13 09:36:40

○MXquinstreet.com.mail8.psmtp.com2015-05-14 → 2015-05-14 · 3 obs

● 2015-05-14 16:31:44
○ 2015-10-10 22:34:52
○ 2026-03-13 09:36:40

●MXus-smtp-inbound-1.mimecast.com2015-10-10 → 2026-03-13 · 3 obs

○ 2015-05-14 16:31:44
● 2015-10-10 22:34:52
● 2026-03-13 09:36:40

●MXus-smtp-inbound-2.mimecast.com2015-10-10 → 2026-03-13 · 3 obs

○ 2015-05-14 16:31:44
● 2015-10-10 22:34:52
● 2026-03-13 09:36:40

●A104.18.6.1532026-02-16 → 2026-03-13 · 3 obs

○ 2020-01-27 08:14:22
● 2026-02-16 08:50:28
● 2026-03-13 09:36:40

●A104.18.7.1532026-02-16 → 2026-03-13 · 3 obs

○ 2020-01-27 08:14:22
● 2026-02-16 08:50:28
● 2026-03-13 09:36:40

●A2606:4700::6812:6992026-02-16 → 2026-03-13 · 3 obs

○ 2020-01-27 08:14:22
● 2026-02-16 08:50:28
● 2026-03-13 09:36:40

●A2606:4700::6812:7992026-02-16 → 2026-03-13 · 3 obs

○ 2020-01-27 08:14:22
● 2026-02-16 08:50:28
● 2026-03-13 09:36:40

○A70.42.23.2442015-05-14 → 2020-01-27 · 4 obs

● 2015-05-14 16:31:44
● 2020-01-27 08:14:22
○ 2026-02-16 08:50:28
○ 2026-03-13 09:36:40

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
gradsource.com	john.ns.cloudflare.com, adaline.ns.cloudflare.com	12 records

✅ Authoritative Response

Server: 108.162.194.49

NS records: john.ns.cloudflare.com, adaline.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for gradsource.com (unsigned zone)

⏱️ Timing

Total: 254ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.18.7.153, 104.18.6.153`
AAAA	2	`2606:4700::6812:799, 2606:4700::6812:699`
NS	2	`adaline.ns.cloudflare.com, john.ns.cloudflare.com`
MX	2	`us-smtp-inbound-1.mimecast.com (pri: 100, us-smtp-inbound-2.mimecast.com (pri: 200`
TXT	3	`MS=ms54997326, d6vl59zlxdm57n9wv5ptcmp3ygjgzsyh...`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`adaline.ns.cloudflare.com dns.cloudflare`

📌 Glue Records Collected

Total: 12

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

Analysis

Hierarchy

gradsource.com is the parent of www.gradsource.com.

IP Addresses

gradsource.com resolves to four IPs: 2606:4700::6812:699, 2606:4700::6812:799, 104.18.6.153 and 104.18.7.153.

Other host names, for instance api.tst.gateway.nederlandseloterij.nl, veytsmandds.com, accel.com.au, www.vvtat.lt and www.purple.com share IP numbers with gradsource.com.

Name Servers

gradsource.com has two name servers: adaline.ns.cloudflare.com and john.ns.cloudflare.com.

gradsource.com shares the same name server setup as other domains, for example revleap.me, educationdynamics.com, kickass-anime.ro, armystudyguide.com and dobrebezpieczniki.pl.

gradsource.com shares some name servers with other domains, for example yjbtb.com, ybetss.de, shout-interface.com, walnutcreeklandscaping.com and lvchronicle.com.

These name servers are commonly used alongside greg.ns.cloudflare.com, robert.ns.cloudflare.com, ines.ns.cloudflare.com and princess.ns.cloudflare.com.

Host names with six IP numbers: adaline.ns.cloudflare.com points to: 2606:4700:50::a29f:2631, 2803:f800:50::6ca2:c231, 2a06:98c1:50::ac40:2231, 108.162.194.49, 162.159.38.49 and 172.64.34.49; john.ns.cloudflare.com points to: 2606:4700:58::adf5:3bb9, 2803:f800:50::6ca2:c1b9, 2a06:98c1:50::ac40:21b9, 108.162.193.185, 172.64.33.185 and 173.245.59.185.

Mail Servers

gradsource.com is served by two mail servers: us-smtp-inbound-1.mimecast.com and us-smtp-inbound-2.mimecast.com.

gradsource.com shares the mail server setup with other domains, for example argusvickers.com, fencingsupply.com, vintagebooks.com, clinicalleaderforum.com and dccoil.com.

gradsource.com shares some mail servers with other domains, at least partially; for instance goldstargps.com, prostamp.ca, kostabrowne.com, at-homeprofessions.com and glueboss.com.

Host names with six IP numbers: us-smtp-inbound-1.mimecast.com points to 170.10.128.141, 170.10.128.221, 170.10.128.242, 170.10.132.141, 170.10.132.221 and 170.10.132.242. The host name us-smtp-inbound-2.mimecast.com points to the same six: 170.10.128.141, 170.10.128.221, 170.10.128.242, 170.10.132.141, 170.10.132.221 and 170.10.132.242. The IPs 170.10.128.141, 170.10.128.221, 170.10.128.242, 170.10.132.141, 170.10.132.221 and 170.10.132.242 are shared by host names us-smtp-inbound-1.mimecast.com and us-smtp-inbound-2.mimecast.com.

Host names that point to 170.10.128.141: us-smtp-inbound-1.mimecast.com and us-smtp-inbound-2.mimecast.com. Host names that point to 170.10.128.221: us-smtp-inbound-1.mimecast.com and us-smtp-inbound-2.mimecast.com. Host names that point to 170.10.128.242: us-smtp-inbound-1.mimecast.com and us-smtp-inbound-2.mimecast.com. Host names that point to 170.10.132.141: us-smtp-inbound-1.mimecast.com and us-smtp-inbound-2.mimecast.com. Host names that point to 170.10.132.221: us-smtp-inbound-1.mimecast.com and us-smtp-inbound-2.mimecast.com. Host names that point to 170.10.132.242: us-smtp-inbound-1.mimecast.com and us-smtp-inbound-2.mimecast.com.

gradsource.com - robtex.com

gradsource.com

com

Subdomains

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

📌 Glue Records Collected

Analysis

Hierarchy

IP Addresses

Name Servers

Mail Servers

`gradsource.com`

`com`