`mail.pluggeduniversity.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3031::6815:3b6^{🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3033::ac43:8302^{🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.3.182^{Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.131.2^{🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.3.182, 172.67.131.2
		IPv6 hints	2606:4700:3031::6815:3b6, 2606:4700:3033::ac43:8302
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=12, name=cloudflare-ech.com

`pluggeduniversity.com`

	DNSSEC	⚠️ Not signed
	A	198.49.23.144^{🇺🇸 SQUARESPACE-1198.49.23.0/24 Squarespace, Inc. 459 Broadway, 5th Floor New York, NY 10013 US}
	A	198.49.23.145^{🇺🇸 SQUARESPACE-1198.49.23.0/24 Squarespace, Inc. 459 Broadway, 5th Floor New York, NY 10013 US}
	A	198.185.159.144^{🇺🇸 SQUARESPACE-1198.185.159.0/24 Squarespace, Inc. 459 Broadway, 5th Floor New York, NY 10013 US}
	A	198.185.159.145^{🇺🇸 SQUARESPACE-1198.185.159.0/24 Squarespace, Inc. 459 Broadway, 5th Floor New York, NY 10013 US}
	NS	`connie.ns.cloudflare.com` ⭐
	NS	`kai.ns.cloudflare.com`
	MX	`aspmx.l.google.com` ⭐
	MX	`alt1.aspmx.l.google.com`⁽⁵⁾
	MX	`alt2.aspmx.l.google.com`⁽⁵⁾
	MX	`alt3.aspmx.l.google.com`⁽¹⁰⁾
	MX	`alt4.aspmx.l.google.com`⁽¹⁰⁾
	TXT	`v=spf1 +a +mx +ip4:35.209.78.196 include:_spf.mailspamprotection.com ~all`
	SOA	`connie.ns.cloudflare.com`dns@cloudflare.com serial=2407413231

Previously MX for

pluggeduniversity.com

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DNS History

7 records (4 active, 3 former)

●A104.21.3.1822026-05-04 → 2026-07-28 · 3 obs

○ 2016-07-14 09:58:36
● 2026-05-04 10:21:02
● 2026-07-28 13:57:56

●A172.67.131.22026-05-04 → 2026-07-28 · 3 obs

○ 2016-07-14 09:58:36
● 2026-05-04 10:21:02
● 2026-07-28 13:57:56

○A2606:4700:3030::6815:3b62026-05-04 → 2026-06-16 · 5 obs

○ 2016-07-14 09:58:36
● 2026-05-04 10:21:02
● 2026-06-16 14:12:56
○ 2026-07-09 12:44:02
○ 2026-07-28 13:57:56

●A2606:4700:3031::6815:3b62026-07-09 → 2026-07-28 · 3 obs

○ 2026-06-16 14:12:56
● 2026-07-09 12:44:02
● 2026-07-28 13:57:56

●A2606:4700:3033::ac43:83022026-07-09 → 2026-07-28 · 3 obs

○ 2026-06-16 14:12:56
● 2026-07-09 12:44:02
● 2026-07-28 13:57:56

○A2606:4700:3035::ac43:83022026-05-04 → 2026-06-16 · 5 obs

○ 2016-07-14 09:58:36
● 2026-05-04 10:21:02
● 2026-06-16 14:12:56
○ 2026-07-09 12:44:02
○ 2026-07-28 13:57:56

○A85.92.140.1362015-08-21 → 2016-07-14 · 4 obs

● 2015-08-21 23:33:06
● 2016-07-14 09:58:36
○ 2026-05-04 10:21:02
○ 2026-07-28 13:57:56

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	g.gtld-servers.net, b.gtld-servers.net, i.gtld-servers.net, h.gtld-servers.net...	-
pluggeduniversity.com	kai.ns.cloudflare.com, connie.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.193.188

NS records: kai.ns.cloudflare.com, connie.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for pluggeduniversity.com (unsigned zone)

⏱️ Timing

Total: 1549ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.131.2, 104.21.3.182`
AAAA	2	`2606:4700:3033::ac43:8302, 2606:4700:3031::6815:3b6`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

mail.pluggeduniversity.com resolves to four IP addresses: 104.21.3.182, 172.67.131.2, 2606:4700:3031::6815:3b6 and 2606:4700:3033::ac43:8302.

reti-archetti.it, tantillosfarm.com, pl-oferta8945637841.shop plus two other host names have IP numbers in common with mail.pluggeduniversity.com.

mail.pluggeduniversity.com - robtex.com