🛡️Domain Reputation CheckBlocklist, phishing & malware status→

`null.apps.fbsbx.com`

CNAME	`scontent.xx.fbcdn.net`
DNSSEC	⚠️ Not signed
A	2a03:2880:f37e:80:face:b00c:0:3^{🇺🇸 Facebook2a03:2880:f37e::/48 , Inc.}
		PTR	`xx-fbcdn6-shv-01-atl3.fbcdn.net`
A	57.144.252.128^{🇮🇪 Facebook57.144.252.0/23 , Inc.}
TXT	`v=spf1 a ~all`
HTTPS	HTTP/2, HTTP/3
HTTPS	HTTP/2, HTTP/3

`apps.fbsbx.com`

	CNAME	`star.c10r.facebook.com`
	DNSSEC	⚠️ Not signed
	A	2a03:2880:f37e:8d:face:b00c:0:2^{🇺🇸 Facebook2a03:2880:f37e::/48 , Inc.}
	A	57.144.252.141^{🇮🇪 Facebook57.144.252.0/23 , Inc.}
	MX	`smtpin.vvv.facebook.com` ⭐
	TXT	`v=spf1 a ~all`
	HTTPS	HTTP/2, HTTP/3
	HTTPS	HTTP/2, HTTP/3

Same first word

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null.cc

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null.blogspot.my

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null.dynu.net

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null.dns-cloud.net

Similar names

Previous names

Next names

DNS History

1 record (1 active, 0 former)

●CNAMEscontent.xx.fbcdn.net2026-07-06 → 2026-10-16 · 2 obs

● 2026-07-06 03:06:54
● 2026-10-16 23:52:50

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net...	-
fbsbx.com	a.ns.facebook.com, b.ns.facebook.com, c.ns.facebook.com, d.ns.facebook.com	8 records

✅ Authoritative Response

Server:185.89.218.12

NS records: a.ns.facebook.com, b.ns.facebook.com, c.ns.facebook.com, d.ns.facebook.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for fbsbx.com (unsigned zone)

⏱️ Timing

Total: 208ms | Queries: -

📄 Records

Type	Count	Sample Data
CNAME	1	`scontent.xx.fbcdn.net`

📌 Glue Records Collected

Total: 8

Out-of-bailiwick: 8 (a.ns.facebook.com, a.ns.facebook.com, b.ns.facebook.com...)

Analysis

IP Addresses

null.apps.fbsbx.com resolves to the IP addresses 57.144.252.128 and 2a03:2880:f37e:80:face:b00c:0:3

scontent-atl.xx.fbcdn.net, scontent.xx.fbcdn.net, scontent-atl3-1.xx.fbcdn.net and two other host names share IP numbers with null.apps.fbsbx.com.

null.apps.fbsbx.com - robtex.com