`workwithtandem.com`

DNSSEC	⚠️ Not signed
A	104.21.3.141^{Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.130.206^{🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`algin.ns.cloudflare.com` ⭐
		A	2606:4700:58::adf5:3b3d^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`algin.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c13d^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`algin.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:213d^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`algin.ns.cloudflare.com`
		A	108.162.193.61^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`algin.ns.cloudflare.com`
		A	172.64.33.61^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`algin.ns.cloudflare.com`
		A	173.245.59.61^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`algin.ns.cloudflare.com`
NS	`leah.ns.cloudflare.com`
		A	2606:4700:50::adf5:3a81^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`leah.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c081^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`leah.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2081^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`leah.ns.cloudflare.com`
		A	108.162.192.129^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`leah.ns.cloudflare.com`
		A	172.64.32.129^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`leah.ns.cloudflare.com`
		A	173.245.58.129^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`leah.ns.cloudflare.com`
MX	`in1-smtp.messagingengine.com` ⭐
		A	103.168.172.216^{🇺🇸 FASTMAILPTYLTD-AS-AP103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`phl-mx-01.messagingengine.com`
		A	103.168.172.217^{🇺🇸 FASTMAILPTYLTD-AS-AP103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`phl-mx-02.messagingengine.com`
		A	103.168.172.218^{🇺🇸 FASTMAILPTYLTD-AS-AP103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`phl-mx-03.messagingengine.com`
		A	103.168.172.219^{🇺🇸 FASTMAILPTYLTD-AS-AP103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`phl-mx-04.messagingengine.com`
		A	103.168.172.220^{🇺🇸 FASTMAILPTYLTD-AS-AP103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`phl-mx-05.messagingengine.com`
		A	103.168.172.221^{🇺🇸 FASTMAILPTYLTD-AS-AP103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`phl-mx-06.messagingengine.com`
		A	103.168.172.222^{🇺🇸 FASTMAILPTYLTD-AS-AP103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`phl-mx-07.messagingengine.com`
		A	103.168.172.223^{🇺🇸 FASTMAILPTYLTD-AS-AP103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`phl-mx-08.messagingengine.com`
MX	`in2-smtp.messagingengine.com`⁽²⁰⁾
		A	202.12.124.216^{FASTMAILPTYLTD-AS-AP202.12.124.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`stl-mx-01.messagingengine.com`
		A	202.12.124.217^{FASTMAILPTYLTD-AS-AP202.12.124.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`stl-mx-02.messagingengine.com`
		A	202.12.124.218^{FASTMAILPTYLTD-AS-AP202.12.124.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`stl-mx-03.messagingengine.com`
		A	202.12.124.219^{FASTMAILPTYLTD-AS-AP202.12.124.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`stl-mx-04.messagingengine.com`
TXT	`v=spf1 a mx include:spf.messagingengine.com ip4:66.228.57.47 ip6:2600:3c02::f...`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4	104.21.3.141, 172.67.130.206
SOA	`algin.ns.cloudflare.com`dns@cloudflare.com serial=2398396313

`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=1774429287

Same first word

workwithtandem.com

DNS History

11 records (6 active, 5 former)

●NSalgin.ns.cloudflare.com2017-01-05 → 2026-03-25 · 2 obs

● 2017-01-05 01:06:50
● 2026-03-25 09:24:42

●NSleah.ns.cloudflare.com2017-01-05 → 2026-03-25 · 2 obs

● 2017-01-05 01:06:50
● 2026-03-25 09:24:42

●MXin1-smtp.messagingengine.com2026-02-16 → 2026-03-25 · 3 obs

○ 2017-11-25 22:52:08
● 2026-02-16 09:10:00
● 2026-03-25 09:24:42

●MXin2-smtp.messagingengine.com2026-02-16 → 2026-03-25 · 3 obs

○ 2017-11-25 22:52:08
● 2026-02-16 09:10:00
● 2026-03-25 09:24:42

○MXmail.workwithtandem.com2017-01-05 → 2017-11-25 · 4 obs

● 2017-01-05 01:06:50
● 2017-11-25 22:52:08
○ 2026-02-16 09:10:00
○ 2026-03-25 09:24:42

●A104.21.3.1412026-02-16 → 2026-03-25 · 3 obs

○ 2017-11-25 22:52:08
● 2026-02-16 09:10:00
● 2026-03-25 09:24:42

○A104.28.16.452017-01-05 → 2017-11-25 · 4 obs

● 2017-01-05 01:06:50
● 2017-11-25 22:52:08
○ 2026-02-16 09:10:00
○ 2026-03-25 09:24:42

○A104.28.17.452017-01-05 → 2017-11-25 · 4 obs

● 2017-01-05 01:06:50
● 2017-11-25 22:52:08
○ 2026-02-16 09:10:00
○ 2026-03-25 09:24:42

●A172.67.130.2062026-02-16 → 2026-03-25 · 3 obs

○ 2017-11-25 22:52:08
● 2026-02-16 09:10:00
● 2026-03-25 09:24:42

○A2400:cb00:2048:1::681c:102d2017-01-05 → 2017-11-25 · 4 obs

● 2017-01-05 01:06:50
● 2017-11-25 22:52:08
○ 2026-02-16 09:10:00
○ 2026-03-25 09:24:42

○A2400:cb00:2048:1::681c:112d2017-01-05 → 2017-11-25 · 4 obs

● 2017-01-05 01:06:50
● 2017-11-25 22:52:08
○ 2026-02-16 09:10:00
○ 2026-03-25 09:24:42

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	b.gtld-servers.net, l.gtld-servers.net, a.gtld-servers.net, f.gtld-servers.net...	-
workwithtandem.com	leah.ns.cloudflare.com, algin.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.193.61

NS records: leah.ns.cloudflare.com, algin.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for workwithtandem.com (unsigned zone)

⏱️ Timing

Total: 376ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.130.206, 104.21.3.141`
NS	2	`algin.ns.cloudflare.com, leah.ns.cloudflare.com`
MX	2	`in1-smtp.messagingengine.com (pri: 10), in2-smtp.messagingengine.com (pri: 20)`
TXT	1	`v=spf1 a mx include:spf.messagingengine.`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`algin.ns.cloudflare.com dns.cloudflare.c`

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

workwithtandem.com has two IP numbers: 104.21.3.141 and 172.67.130.206.

Other host names, for instance sssok.net, error33.net, booz-allen.jp, q668.cc and softag.com share IP numbers with workwithtandem.com.

Name Servers

workwithtandem.com's delegation uses two name servers: algin.ns.cloudflare.com and leah.ns.cloudflare.com.

workwithtandem.com uses the same name server setup as other domains, such as text-check.co.uk, edunautica.mx, videovortex.com, thechesterfieldbar.com and seriefilmes.com.

workwithtandem.com at least partially shares name servers with other domains, including fashion-likes.ru, palavrasdecinema.com, biquge.co, acunit.net and 7904.com.

These name servers are often used with grace.ns.cloudflare.com and arya.ns.cloudflare.com.

Host names with six IP numbers:

algin.ns.cloudflare.com points to 2606:4700:58::adf5:3b3d, 2803:f800:50::6ca2:c13d, 2a06:98c1:50::ac40:213d, 108.162.193.61, 172.64.33.61 and 173.245.59.61.

leah.ns.cloudflare.com points to 2606:4700:50::adf5:3a81, 2803:f800:50::6ca2:c081, 2a06:98c1:50::ac40:2081, 108.162.192.129, 172.64.32.129 and 173.245.58.129.

Mail Servers

workwithtandem.com is served by two mail servers in1-smtp.messagingengine.com and in2-smtp.messagingengine.com.

workwithtandem.com shares the same mail server setup as other domains, for instance skyo.net, maynet.org, shomodj.com, nofilter.org and loadbull.com.

Host names with eight IP numbers:

in1-smtp.messagingengine.com points to 103.168.172.216, 103.168.172.217, 103.168.172.218, 103.168.172.219, 103.168.172.220, 103.168.172.221, 103.168.172.222 and 103.168.172.223.

Host names with four IP numbers:

in2-smtp.messagingengine.com points to 202.12.124.216, 202.12.124.217, 202.12.124.218 and 202.12.124.219.

workwithtandem.com - robtex.com