`mail.rtbsystem.com`

	DNSSEC	⚠️ Not signed
	A	91.206.220.68^{🇻🇬 MARKETGID-AS91.206.220.0/23 Marketgid Ltd}

`rtbsystem.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3030::6815:444a^{🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3035::ac43:bfac^{🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.68.74^{Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.191.172^{🇺🇸 Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`chuck.ns.cloudflare.com` ⭐
NS	`grace.ns.cloudflare.com`
MX	`smtp.google.com` ⭐
TXT	`v=spf1 +ip4:163.172.77.20 +ip4:163.172.75.188 +a +mx include:_spf.google.com ...`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.68.74, 172.67.191.172
		IPv6 hints	2606:4700:3030::6815:444a, 2606:4700:3035::ac43:bfac
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=156, name=cloudflare-ech.com
SOA	`chuck.ns.cloudflare.com`dns@cloudflare.com serial=2410533919

WOT: SAFE (50/100)
⚠️ On DNS blocklist: light, multi, popupads, pro, pro.mini, pro.plus, pro.plus.mini, ultimate, ultimate.mini
WOT: SAFE (37/100)
📈 Tranco rank: #17,627

Previously MX for

www.rtbsystem.com

rtbsystem.com

mail.rtbsystem.com

Same first word

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DNS History

4 records (1 active, 3 former)

○MXmail.rtbsystem.com2015-06-12 → 2016-10-26 · 4 obs

● 2015-06-12 09:30:56
● 2016-10-26 18:17:48
○ 2026-03-27 11:15:50
○ 2026-08-10 20:47:06

○A62.4.27.632015-09-06 → 2016-10-26 · 5 obs

○ 2015-06-12 09:30:56
● 2015-09-06 14:51:22
● 2016-10-26 18:17:48
○ 2026-03-27 11:15:50
○ 2026-08-10 20:47:06

●A91.206.220.682026-03-27 → 2026-08-10 · 3 obs

○ 2016-10-26 18:17:48
● 2026-03-27 11:15:50
● 2026-08-10 20:47:06

○A94.23.144.1402015-06-12 → 2015-06-12 · 3 obs

● 2015-06-12 09:30:56
○ 2015-09-06 14:51:22
○ 2026-08-10 20:47:06

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	h.gtld-servers.net, i.gtld-servers.net, k.gtld-servers.net, e.gtld-servers.net...	-
rtbsystem.com	chuck.ns.cloudflare.com, grace.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.192.159

NS records: chuck.ns.cloudflare.com, grace.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for rtbsystem.com (unsigned zone)

⏱️ Timing

Total: 246ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`91.206.220.68`

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

mail.rtbsystem.com directs to one IP number, which is 91.206.220.68.

Host names like selectornews.com are further examples that share IP numbers with mail.rtbsystem.com.

mail.rtbsystem.com - dns.ninja