`smtpsync.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3030::ac43:d00e^{🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3035::6815:351c^{🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.53.28^{Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.208.14^{🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`charles.ns.cloudflare.com` ⭐
		A	2606:4700:58::adf5:3b53^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`charles.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c153^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`charles.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2153^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`charles.ns.cloudflare.com`
		A	108.162.193.83^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`charles.ns.cloudflare.com`
		A	172.64.33.83^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`charles.ns.cloudflare.com`
		A	173.245.59.83^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`charles.ns.cloudflare.com`
NS	`jillian.ns.cloudflare.com`
		A	2606:4700:50::a29f:262c^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jillian.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c22c^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`jillian.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:222c^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`jillian.ns.cloudflare.com`
		A	108.162.194.44^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jillian.ns.cloudflare.com`
		A	162.159.38.44^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jillian.ns.cloudflare.com`
		A	172.64.34.44^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jillian.ns.cloudflare.com`
MX	`inbound-smtp.us-east-1.amazonaws.com` ⭐
		A	3.211.210.226^{🇺🇸 Amazon3.208.0.0/12 EC2 IAD prefix}
			PTR	`ec2-3-211-210-226.compute-1.amazonaws.com`
		A	44.206.9.87^{🇺🇸 Amazon44.192.0.0/11 EC2 IAD prefix}
			PTR	`ec2-44-206-9-87.compute-1.amazonaws.com`
		A	44.210.166.32^{🇺🇸 Amazon44.192.0.0/11 EC2 IAD prefix}
			PTR	`ec2-44-210-166-32.compute-1.amazonaws.com`
		A	54.164.173.191^{🇺🇸 Amazon54.164.0.0/15 EC2 IAD prefix}
			PTR	`ec2-54-164-173-191.compute-1.amazonaws.com`
		A	54.197.5.236^{🇺🇸 Amazon54.196.0.0/15 EC2 IAD 54.196.0.0/15}
			PTR	`ec2-54-197-5-236.compute-1.amazonaws.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.53.28, 172.67.208.14
		IPv6 hints	2606:4700:3030::ac43:d00e, 2606:4700:3035::6815:351c
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=239, name=cloudflare-ech.com
SOA	`charles.ns.cloudflare.com`dns@cloudflare.com serial=2411538941

`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=1786279584

⚠️ On DNS blocklist: tif

Previously MX for

smtpsync.com

Same first word

smtpsync.com

DNS History

18 records (7 active, 11 former)

●NScharles.ns.cloudflare.com2026-07-24 → 2026-08-09 · 3 obs

○ 2016-07-08 13:53:56
● 2026-07-24 21:32:00
● 2026-08-09 12:51:52

●NSjillian.ns.cloudflare.com2026-07-24 → 2026-08-09 · 3 obs

○ 2016-07-08 13:53:56
● 2026-07-24 21:32:00
● 2026-08-09 12:51:52

○NSns.syncleads.com2015-08-05 → 2015-11-29 · 5 obs

○ 2008-03-06 20:43:52
● 2015-08-05 14:48:42
● 2015-11-29 10:13:12
○ 2016-03-18 17:02:32
○ 2026-08-09 12:51:52

○NSns1.syncleads.com2015-08-05 → 2015-11-29 · 5 obs

○ 2008-03-06 20:43:52
● 2015-08-05 14:48:42
● 2015-11-29 10:13:12
○ 2016-03-18 17:02:32
○ 2026-08-09 12:51:52

○NSns37.domaincontrol.com2016-03-18 → 2016-03-18 · 4 obs

○ 2015-11-29 10:13:12
● 2016-03-18 17:02:32
○ 2016-07-08 13:53:56
○ 2026-08-09 12:51:52

○NSns38.domaincontrol.com2016-03-18 → 2016-03-18 · 4 obs

○ 2015-11-29 10:13:12
● 2016-03-18 17:02:32
○ 2016-07-08 13:53:56
○ 2026-08-09 12:51:52

○MX_dc-mx.275fb34ae22d.smtpsync.com2026-07-26 → 2026-07-26 · 4 obs

○ 2026-07-24 21:32:00
● 2026-07-26 09:59:22
○ 2026-07-27 19:05:38
○ 2026-08-09 12:51:52

●MXinbound-smtp.us-east-1.amazonaws.com2026-07-24 → 2026-08-09 · 3 obs

○ 2016-07-08 13:53:56
● 2026-07-24 21:32:00
● 2026-08-09 12:51:52

○MXmail.smtpsync.com2026-07-27 → 2026-07-27 · 4 obs

○ 2026-07-26 09:59:22
● 2026-07-27 19:05:38
○ 2026-07-31 17:22:34
○ 2026-08-09 12:51:52

○MXmailstore1.secureserver.net2016-03-18 → 2016-03-18 · 4 obs

○ 2015-11-29 10:13:12
● 2016-03-18 17:02:32
○ 2016-07-08 13:53:56
○ 2026-08-09 12:51:52

○MXsmtp.secureserver.net2016-03-18 → 2016-03-18 · 4 obs

○ 2015-11-29 10:13:12
● 2016-03-18 17:02:32
○ 2016-07-08 13:53:56
○ 2026-08-09 12:51:52

○MXsmtpsync.com2015-08-05 → 2015-11-29 · 5 obs

○ 2008-03-06 20:43:52
● 2015-08-05 14:48:42
● 2015-11-29 10:13:12
○ 2016-03-18 17:02:32
○ 2026-08-09 12:51:52

●A104.21.53.282026-07-24 → 2026-08-09 · 3 obs

○ 2016-07-08 13:53:56
● 2026-07-24 21:32:00
● 2026-08-09 12:51:52

●A172.67.208.142026-07-24 → 2026-08-09 · 3 obs

○ 2016-07-08 13:53:56
● 2026-07-24 21:32:00
● 2026-08-09 12:51:52

○A184.168.221.462016-03-18 → 2016-03-18 · 4 obs

○ 2015-11-29 10:13:12
● 2016-03-18 17:02:32
○ 2016-07-08 13:53:56
○ 2026-08-09 12:51:52

○A205.234.200.1422015-08-05 → 2015-11-29 · 5 obs

○ 2008-03-06 20:43:52
● 2015-08-05 14:48:42
● 2015-11-29 10:13:12
○ 2016-03-18 17:02:32
○ 2026-08-09 12:51:52

●A2606:4700:3030::ac43:d00e2026-07-24 → 2026-08-09 · 3 obs

○ 2016-07-08 13:53:56
● 2026-07-24 21:32:00
● 2026-08-09 12:51:52

●A2606:4700:3035::6815:351c2026-07-24 → 2026-08-09 · 3 obs

○ 2016-07-08 13:53:56
● 2026-07-24 21:32:00
● 2026-08-09 12:51:52

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net...	-
smtpsync.com	charles.ns.cloudflare.com, jillian.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.193.83

NS records: charles.ns.cloudflare.com, jillian.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for smtpsync.com (unsigned zone)

⏱️ Timing

Total: 177ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.208.14, 104.21.53.28`
AAAA	2	`2606:4700:3030::ac43:d00e, 2606:4700:3035::6815:351c`
NS	2	`charles.ns.cloudflare.com, jillian.ns.cloudflare.com`
MX	1	`inbound-smtp.us-east-1.amazonaws.com (pr`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`charles.ns.cloudflare.com dns.cloudflare`

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

smtpsync.com points to the four IP addresses 104.21.53.28, 172.67.208.14, 2606:4700:3030::ac43:d00e and 2606:4700:3035::6815:351c.

adoroseriesmp4.com, ipasnosul.es.gov.br, hqbao.cn plus two other host names have IP numbers in common with smtpsync.com.

Name Servers

DNS delegation for smtpsync.com points to two name servers: charles.ns.cloudflare.com and jillian.ns.cloudflare.com.

The name server configuration of smtpsync.com is shared with other domains, for instance simplworkssoftware.com, casino729.click, true-fortune-casino33.com and two others.

There is at least partial name server overlap between smtpsync.com and other domains — identity-verify-center.com, brentsharp.com, newswave87.top and two more among them.

The name servers gabriel.ns.cloudflare.com, shaz.ns.cloudflare.com and rick.ns.cloudflare.com are often found in combination with these name servers.

Hosts with 6 IP addresses each:

charles.ns.cloudflare.com has IP addresses 108.162.193.83, 172.64.33.83 and 173.245.59.83, plus 3 other.

jillian.ns.cloudflare.com has IP addresses 108.162.194.44, 162.159.38.44 and 172.64.34.44, plus 3 other.

Mail Servers

smtpsync.com uses one mail server — inbound-smtp.us-east-1.amazonaws.com.

The mail server setup of smtpsync.com matches that of other domains such as ellendale-electric.com, chrisskenemusic.com, indxes.com and two others.

At least some of the mail servers used by smtpsync.com are shared with other domains: inwebo.atlassian.net, troedelsoft.atlassian.net, rosakademy.ru and two others among them.

These mail servers tend to be used in conjunction with the mail servers inbound-smtp.us-west-2.amazonaws.com.

inbound-smtp.us-east-1.amazonaws.com directs to five IP numbers: 3.211.210.226, 44.206.9.87, 44.210.166.32 and two others.

smtpsync.com - robtex.com

smtpsync.com

com

Previously MX for

Same first word

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

📌 Glue Records Collected

Analysis

IP Addresses

Name Servers

Mail Servers

`smtpsync.com`

`com`