mailrb2b.com - dns.ninja

`mailrb2b.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3035::6815:5eef^{🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3036::ac43:8d9e^{🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.94.239^{Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.141.158^{🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`nolan.ns.cloudflare.com` ⭐
		A	2606:4700:58::a29f:2c38^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`nolan.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c338^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`nolan.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2338^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`nolan.ns.cloudflare.com`
		A	108.162.195.56^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`nolan.ns.cloudflare.com`
		A	162.159.44.56^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`nolan.ns.cloudflare.com`
		A	172.64.35.56^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`nolan.ns.cloudflare.com`
NS	`sonia.ns.cloudflare.com`
		A	2606:4700:50::a29f:26be^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sonia.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c2be^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`sonia.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:22be^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`sonia.ns.cloudflare.com`
		A	108.162.194.190^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sonia.ns.cloudflare.com`
		A	162.159.38.190^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sonia.ns.cloudflare.com`
		A	172.64.34.190^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sonia.ns.cloudflare.com`
MX	`mailrb2b-com.mail.protection.outlook.com` ⭐
		A	2a01:111:f403:f902::^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-bl2pr04cu00100.inbound.protection.outlook.com`
		A	2a01:111:f403:f902::1^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-bl2pr02cu00101.inbound.protection.outlook.com`
		A	2a01:111:f403:f90c::^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-sn1pr03cu00100.inbound.protection.outlook.com`
		A	2a01:111:f403:f90f::1^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-sa9pr04cu00201.inbound.protection.outlook.com`
		A	52.101.10.16^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-bn6pr21cu00500.inbound.protection.outlook.com`
		A	52.101.11.13^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-sn1pr0501cu00205.inbound.protection.outlook.com`
		A	52.101.40.24^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-cy5pr05cu00100.inbound.protection.outlook.com`
		A	52.101.41.26^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-sj0pr03cu01702.inbound.protection.outlook.com`
TXT	`MS=ms56710371`
TXT	`v=spf1 include:spf.protection.outlook.com ~all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.94.239, 172.67.141.158
		IPv6 hints	2606:4700:3035::6815:5eef, 2606:4700:3036::ac43:8d9e
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=17, name=cloudflare-ech.com
SOA	`nolan.ns.cloudflare.com`dns@cloudflare.com serial=2409954581

`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=1786383049

Previously MX for

mailrb2b.com

Same first word

mailrb2b.com

DNS History

32 records (7 active, 25 former)

○NSdns1.name-services.com2017-02-12 → 2017-02-12 · 4 obs

○ 2016-06-26 03:15:24
● 2017-02-12 23:00:52
○ 2020-02-04 10:09:26
○ 2026-08-10 17:51:34

○NSdns1.registrar-servers.com2016-06-26 → 2016-06-26 · 4 obs

○ 2015-12-03 04:17:26
● 2016-06-26 03:15:24
○ 2017-02-12 23:00:52
○ 2026-08-10 17:51:34

○NSdns2.name-services.com2017-02-12 → 2017-02-12 · 4 obs

○ 2016-06-26 03:15:24
● 2017-02-12 23:00:52
○ 2020-02-04 10:09:26
○ 2026-08-10 17:51:34

○NSdns2.registrar-servers.com2016-06-26 → 2016-06-26 · 4 obs

○ 2015-12-03 04:17:26
● 2016-06-26 03:15:24
○ 2017-02-12 23:00:52
○ 2026-08-10 17:51:34

○NSdns3.name-services.com2017-02-12 → 2017-02-12 · 4 obs

○ 2016-06-26 03:15:24
● 2017-02-12 23:00:52
○ 2020-02-04 10:09:26
○ 2026-08-10 17:51:34

○NSdns3.registrar-servers.com2016-06-26 → 2016-06-26 · 4 obs

○ 2015-12-03 04:17:26
● 2016-06-26 03:15:24
○ 2017-02-12 23:00:52
○ 2026-08-10 17:51:34

○NSdns4.name-services.com2017-02-12 → 2017-02-12 · 4 obs

○ 2016-06-26 03:15:24
● 2017-02-12 23:00:52
○ 2020-02-04 10:09:26
○ 2026-08-10 17:51:34

○NSdns4.registrar-servers.com2016-06-26 → 2016-06-26 · 4 obs

○ 2015-12-03 04:17:26
● 2016-06-26 03:15:24
○ 2017-02-12 23:00:52
○ 2026-08-10 17:51:34

○NSdns5.name-services.com2017-02-12 → 2017-02-12 · 4 obs

○ 2016-06-26 03:15:24
● 2017-02-12 23:00:52
○ 2020-02-04 10:09:26
○ 2026-08-10 17:51:34

○NSdns5.registrar-servers.com2016-06-26 → 2016-06-26 · 4 obs

○ 2015-12-03 04:17:26
● 2016-06-26 03:15:24
○ 2017-02-12 23:00:52
○ 2026-08-10 17:51:34

●NSnolan.ns.cloudflare.com2026-04-06 → 2026-08-10 · 3 obs

○ 2020-02-04 10:09:26
● 2026-04-06 13:11:16
● 2026-08-10 17:51:34

○NSns1.mailrb2b.com2020-02-04 → 2020-02-04 · 4 obs

○ 2017-02-12 23:00:52
● 2020-02-04 10:09:26
○ 2026-04-06 13:11:16
○ 2026-08-10 17:51:34

○NSns1dhq.name.com2015-08-04 → 2015-08-04 · 3 obs

● 2015-08-04 17:37:28
○ 2015-12-03 04:17:26
○ 2026-08-10 17:51:34

○NSns2.mailrb2b.com2020-02-04 → 2020-02-04 · 4 obs

○ 2017-02-12 23:00:52
● 2020-02-04 10:09:26
○ 2026-04-06 13:11:16
○ 2026-08-10 17:51:34

○NSns2dky.name.com2015-08-04 → 2015-08-04 · 3 obs

● 2015-08-04 17:37:28
○ 2015-12-03 04:17:26
○ 2026-08-10 17:51:34

○NSns3cjl.name.com2015-08-04 → 2015-08-04 · 3 obs

● 2015-08-04 17:37:28
○ 2015-12-03 04:17:26
○ 2026-08-10 17:51:34

○NSns4cfn.name.com2015-08-04 → 2015-08-04 · 3 obs

● 2015-08-04 17:37:28
○ 2015-12-03 04:17:26
○ 2026-08-10 17:51:34

●NSsonia.ns.cloudflare.com2026-04-06 → 2026-08-10 · 3 obs

○ 2020-02-04 10:09:26
● 2026-04-06 13:11:16
● 2026-08-10 17:51:34

○MXm2x.mailrb2b.com2015-08-04 → 2015-08-04 · 3 obs

● 2015-08-04 17:37:28
○ 2015-12-03 04:17:26
○ 2026-08-10 17:51:34

○MXmailb1.mailrb2b.com2015-08-04 → 2015-08-04 · 3 obs

● 2015-08-04 17:37:28
○ 2015-12-03 04:17:26
○ 2026-08-10 17:51:34

●MXmailrb2b-com.mail.protection.outlook.com2026-04-06 → 2026-08-10 · 3 obs

○ 2020-02-04 10:09:26
● 2026-04-06 13:11:16
● 2026-08-10 17:51:34

○MXmailrb2b.com2020-02-04 → 2020-02-04 · 4 obs

○ 2015-12-03 04:17:26
● 2020-02-04 10:09:26
○ 2026-04-06 13:11:16
○ 2026-08-10 17:51:34

○MXpost.mailrb2b.com2015-08-04 → 2015-08-04 · 3 obs

● 2015-08-04 17:37:28
○ 2015-12-03 04:17:26
○ 2026-08-10 17:51:34

○MXsmtp.mailrb2b.com2015-08-04 → 2015-08-04 · 3 obs

● 2015-08-04 17:37:28
○ 2015-12-03 04:17:26
○ 2026-08-10 17:51:34

●A104.21.94.2392026-04-06 → 2026-08-10 · 3 obs

○ 2020-02-04 10:09:26
● 2026-04-06 13:11:16
● 2026-08-10 17:51:34

○A167.71.91.2552020-02-04 → 2020-02-04 · 4 obs

○ 2017-02-12 23:00:52
● 2020-02-04 10:09:26
○ 2026-04-06 13:11:16
○ 2026-08-10 17:51:34

●A172.67.141.1582026-04-06 → 2026-08-10 · 3 obs

○ 2020-02-04 10:09:26
● 2026-04-06 13:11:16
● 2026-08-10 17:51:34

○A2606:4700:3030::ac43:8d9e2026-04-06 → 2026-06-13 · 4 obs

○ 2020-02-04 10:09:26
● 2026-04-06 13:11:16
● 2026-06-13 20:14:28
○ 2026-08-10 17:51:34

○A2606:4700:3031::6815:5eef2026-04-06 → 2026-06-13 · 4 obs

○ 2020-02-04 10:09:26
● 2026-04-06 13:11:16
● 2026-06-13 20:14:28
○ 2026-08-10 17:51:34

●A2606:4700:3035::6815:5eef2026-08-10 → 2026-08-10 · 2 obs

○ 2026-06-13 20:14:28
● 2026-08-10 17:51:34

●A2606:4700:3036::ac43:8d9e2026-08-10 → 2026-08-10 · 2 obs

○ 2026-06-13 20:14:28
● 2026-08-10 17:51:34

○A8.5.1.492017-02-12 → 2017-02-12 · 3 obs

● 2017-02-12 23:00:52
○ 2020-02-04 10:09:26
○ 2026-08-10 17:51:34

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	d.gtld-servers.net, e.gtld-servers.net, m.gtld-servers.net, j.gtld-servers.net...	-
mailrb2b.com	sonia.ns.cloudflare.com, nolan.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.194.190

NS records: sonia.ns.cloudflare.com, nolan.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for mailrb2b.com (unsigned zone)

⏱️ Timing

Total: 248ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.141.158, 104.21.94.239`
AAAA	2	`2606:4700:3036::ac43:8d9e, 2606:4700:3035::6815:5eef`
NS	2	`nolan.ns.cloudflare.com, sonia.ns.cloudflare.com`
MX	1	`mailrb2b-com.mail.protection.outlook.com`
TXT	2	`MS=ms56710371, v=spf1 include:spf.protection.outlook.co`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`nolan.ns.cloudflare.com dns.cloudflare.c`

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

mailrb2b.com resolves to four IP addresses: 104.21.94.239, 172.67.141.158, 2606:4700:3035::6815:5eef and 2606:4700:3036::ac43:8d9e.

Two other host names, along with www.corporate-office-au.com, www.recruitmenttrust.com and uweb.be, also share IP numbers with mailrb2b.com.

Name Servers

mailrb2b.com has two authoritative name servers — nolan.ns.cloudflare.com and sonia.ns.cloudflare.com.

mailrb2b.com shares its NS records with other domains, for example wahealthexchange.org, easeagencyofficemanager.com, unuspay.com and two others.

mailrb2b.com partially shares its NS delegation with several other domains, including 72tk.net, skycomms.com.au, 4554.xyz and two others.

These name servers regularly co-occur with the name servers amy.ns.cloudflare.com, adam.ns.cloudflare.com and syeef.ns.cloudflare.com.

DNS names with 6 IP addresses:

nolan.ns.cloudflare.com points to 108.162.195.56, 162.159.44.56, 172.64.35.56 and 3 other IP addresses.

sonia.ns.cloudflare.com points to 108.162.194.190, 162.159.38.190, 172.64.34.190 and 3 other IP addresses.

Mail Servers

The sole mail server for mailrb2b.com is mailrb2b-com.mail.protection.outlook.com.

With 8 IP addresses total, mailrb2b-com.mail.protection.outlook.com resolves to 52.101.10.16, 52.101.11.13, 52.101.40.24 and 5 others.