mailthisback.com - dns.ninja

`mailthisback.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3033::6815:1361^{🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3037::ac43:b9bb^{🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.19.97^{Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.185.187^{🇺🇸 Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`danica.ns.cloudflare.com` ⭐
		A	2606:4700:50::a29f:26bb^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`danica.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c2bb^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`danica.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:22bb^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`danica.ns.cloudflare.com`
		A	108.162.194.187^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`danica.ns.cloudflare.com`
		A	162.159.38.187^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`danica.ns.cloudflare.com`
		A	172.64.34.187^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`danica.ns.cloudflare.com`
NS	`jim.ns.cloudflare.com`
		A	2606:4700:58::adf5:3b7d^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jim.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c17d^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`jim.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:217d^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`jim.ns.cloudflare.com`
		A	108.162.193.125^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jim.ns.cloudflare.com`
		A	172.64.33.125^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jim.ns.cloudflare.com`
		A	173.245.59.125^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jim.ns.cloudflare.com`
MX	`aspmx.l.google.com` ⭐
		A	2607:f8b0:4004:c17::1b^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`bl-in-f27.1e100.net`
		A	173.194.45.26^{🇺🇸 Google173.194.0.0/16}
			PTR	`yuiadum-in-f26.1e100.net`
MX	`alt1.aspmx.l.google.com`⁽⁵⁾
		A	2800:3f0:4003:c14::1b^{🇨🇱 Google2800:3f0:4003::/48}
		A	192.178.234.27^{🇺🇸 Google192.178.0.0/15}
			PTR	`ncsclj-in-f27.1e100.net`
MX	`alt2.aspmx.l.google.com`⁽⁵⁾
		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	`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::1a^{🇧🇪 Google2a00:1450:400c::/48}
			PTR	`yubrupd-in-f26.1e100.net`
		A	172.253.157.27^{🇺🇸 Google172.253.0.0/16}
			PTR	`yubrupd-in-f27.1e100.net`
TXT	`google-site-verification=CTsM6iClt47t3rRJxKsaE9AJBSe59p9kdwVi1FKrUsg`
TXT	`v=spf1 +a +mx +ip4:50.28.33.17 ~all`
TXT	`v=spf1 include:_spf.google.com ~all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.19.97, 172.67.185.187
		IPv6 hints	2606:4700:3033::6815:1361, 2606:4700:3037::ac43:b9bb
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=41, name=cloudflare-ech.com
SOA	`danica.ns.cloudflare.com`dns@cloudflare.com serial=2410796868

`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=1786476154

Previously MX for

mailthisback.com

Same first word

mailthisback.com

Similar names

michalbistak.com

DNS History

17 records (11 active, 6 former)

●NSdanica.ns.cloudflare.com2026-02-14 → 2026-08-11 · 3 obs

○ 2017-04-01 07:07:00
● 2026-02-14 19:22:12
● 2026-08-11 19:40:14

●NSjim.ns.cloudflare.com2026-02-14 → 2026-08-11 · 3 obs

○ 2017-04-01 07:07:00
● 2026-02-14 19:22:12
● 2026-08-11 19:40:14

○NSns1.32bweb.com2015-08-15 → 2017-04-01 · 4 obs

● 2015-08-15 19:59:34
● 2017-04-01 07:07:00
○ 2026-02-14 19:22:12
○ 2026-08-11 19:40:14

○NSns2.32bweb.com2015-08-15 → 2017-04-01 · 4 obs

● 2015-08-15 19:59:34
● 2017-04-01 07:07:00
○ 2026-02-14 19:22:12
○ 2026-08-11 19:40:14

●MXalt1.aspmx.l.google.com2026-02-14 → 2026-08-11 · 3 obs

○ 2017-04-01 07:07:00
● 2026-02-14 19:22:12
● 2026-08-11 19:40:14

●MXalt2.aspmx.l.google.com2026-02-14 → 2026-08-11 · 3 obs

○ 2017-04-01 07:07:00
● 2026-02-14 19:22:12
● 2026-08-11 19:40:14

●MXalt3.aspmx.l.google.com2026-02-14 → 2026-08-11 · 3 obs

○ 2017-04-01 07:07:00
● 2026-02-14 19:22:12
● 2026-08-11 19:40:14

●MXalt4.aspmx.l.google.com2026-02-14 → 2026-08-11 · 3 obs

○ 2017-04-01 07:07:00
● 2026-02-14 19:22:12
● 2026-08-11 19:40:14

●MXaspmx.l.google.com2026-02-14 → 2026-08-11 · 3 obs

○ 2017-04-01 07:07:00
● 2026-02-14 19:22:12
● 2026-08-11 19:40:14

○MXmailthisback.com2015-08-15 → 2017-04-01 · 4 obs

● 2015-08-15 19:59:34
● 2017-04-01 07:07:00
○ 2026-02-14 19:22:12
○ 2026-08-11 19:40:14

●A104.21.19.972026-02-14 → 2026-08-11 · 3 obs

○ 2017-04-01 07:07:00
● 2026-02-14 19:22:12
● 2026-08-11 19:40:14

●A172.67.185.1872026-02-14 → 2026-08-11 · 3 obs

○ 2017-04-01 07:07:00
● 2026-02-14 19:22:12
● 2026-08-11 19:40:14

●A2606:4700:3033::6815:13612026-07-09 → 2026-08-11 · 3 obs

○ 2026-05-01 10:06:48
● 2026-07-09 15:11:20
● 2026-08-11 19:40:14

○A2606:4700:3034::6815:13612026-02-14 → 2026-05-01 · 5 obs

○ 2017-04-01 07:07:00
● 2026-02-14 19:22:12
● 2026-05-01 10:06:48
○ 2026-07-09 15:11:20
○ 2026-08-11 19:40:14

○A2606:4700:3034::ac43:b9bb2026-02-14 → 2026-05-01 · 5 obs

○ 2017-04-01 07:07:00
● 2026-02-14 19:22:12
● 2026-05-01 10:06:48
○ 2026-07-09 15:11:20
○ 2026-08-11 19:40:14

●A2606:4700:3037::ac43:b9bb2026-07-09 → 2026-08-11 · 3 obs

○ 2026-05-01 10:06:48
● 2026-07-09 15:11:20
● 2026-08-11 19:40:14

○A50.28.33.172015-08-15 → 2017-04-01 · 4 obs

● 2015-08-15 19:59:34
● 2017-04-01 07:07:00
○ 2026-02-14 19:22:12
○ 2026-08-11 19:40:14

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
mailthisback.com	jim.ns.cloudflare.com, danica.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.194.187

NS records: jim.ns.cloudflare.com, danica.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for mailthisback.com (unsigned zone)

⏱️ Timing

Total: 211ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.185.187, 104.21.19.97`
AAAA	2	`2606:4700:3037::ac43:b9bb, 2606:4700:3033::6815:1361`
NS	2	`danica.ns.cloudflare.com, jim.ns.cloudflare.com`
MX	5	`aspmx.l.google.com (pri: 1), alt3.aspmx.l.google.com (pri: 10)...`
TXT	3	`google-site-verification=CTsM6iClt47t3rR, v=spf1 +a +mx +ip4:50.28.33.17 ~all...`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`danica.ns.cloudflare.com dns.cloudflare.`

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

mailthisback.com resolves to four IP addresses: 104.21.19.97, 172.67.185.187, 2606:4700:3033::6815:1361 and 2606:4700:3037::ac43:b9bb.

Two other host names, along with e8f211.com, digitalmonkie.io and mail.mynet.com.tw, also share IP numbers with mailthisback.com.

Name Servers

mailthisback.com has two authoritative name servers — danica.ns.cloudflare.com and jim.ns.cloudflare.com.

mailthisback.com shares its NS records with other domains, for example letsyep.com, kiwitobes.com, ebcrp.org and two others.

mailthisback.com has at least partial name server overlap with other domains, such as vishwakarmasteelfabrication.in, pduijateng.id, tkc.io and two others.

It is common to see these name servers used together with name servers adam.ns.cloudflare.com and gina.ns.cloudflare.com.

DNS names with 6 IP addresses:

danica.ns.cloudflare.com points to 108.162.194.187, 162.159.38.187, 172.64.34.187 and 3 other IP addresses.

jim.ns.cloudflare.com points to 108.162.193.125, 172.64.33.125, 173.245.59.125 and 3 other IP addresses.

Mail Servers

mailthisback.com is handled by five mail servers: aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com and two others.

There is at least a partial MX overlap between mailthisback.com and other domains, including viengkhamlaos.com, tapu.com, sigono.com and two others.

alt3.aspmx.l.google.com, alt4.aspmx.l.google.com, aspmx2.googlemail.com and aspmx3.googlemail.com are mail servers that frequently appear together with these mail servers.

Host names that have two IP addresses:

aspmx.l.google.com resolves to 173.194.45.26 and 2607:f8b0:4004:c17::1b.

alt1.aspmx.l.google.com resolves to 192.178.234.27 and 2800:3f0:4003:c14::1b.

alt2.aspmx.l.google.com resolves to 172.253.116.27 and 2a00:1450:400b:c02::1b.

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

alt4.aspmx.l.google.com resolves to 172.253.157.27 and 2a00:1450:400c:c23::1a.