`4.secure.facebook.com`

CNAME	`secure.c10r.facebook.com`
DNSSEC	⚠️ Not signed
A	2a03:2880:f003:c1b:face:b00c:0:2b80^{🇺🇸 Facebook2a03:2880:f003::/48 , Inc.}
		PTR	`edge-secure6-shv-01-iad3.facebook.com`
A	31.13.66.1^{🇺🇸 Facebook31.13.66.0/24 , Inc.}
TXT	`v=spf1 a ~all`
HTTPS	HTTP/2, HTTP/3
HTTPS	HTTP/2, HTTP/3

`secure.facebook.com`

	CNAME	`secure.c10r.facebook.com`
	DNSSEC	⚠️ Not signed
	A	2a03:2880:f003:c1b:face:b00c:0:2b80^{🇺🇸 Facebook2a03:2880:f003::/48 , Inc.}
	A	31.13.66.1^{🇺🇸 Facebook31.13.66.0/24 , Inc.}
	TXT	`v=spf1 a ~all`
	HTTPS	HTTP/2, HTTP/3
	HTTPS	HTTP/2, HTTP/3

WOT: SAFE (93/100)
🔒 HSTS Preload (+subdomains)
WOT: SAFE (93/100)

Subdomains

213.4.secure.facebook.com

Same first word

4.toys

4.tv

4.cafe

4.org

4.eu.com

4.vg

4.cam

4.de

4.ws

4.ah.cn

4.srl

4.mk

4.dev

4.kids

4.ms

4.com.ms

4.ph

4.fm

4.kz

4.ac

4.cg

4.bio

4.city

4.org.uk

4.ai

4.asia

4.cm

4.to

4.ht

4.cn

4.ua

4.azurestaticapps.net

4.s3.eu-central-1.amazonaws.com

4.fr

4.co

4.biz

4.td

4.cash

4.tm

4.cx

4.fo

4.gp

4.se

4.kg

4.me

4.yoga

4.com.vn

4.com.ua

4.domains

4.uy

4.dk

4.hm

4.at

4.fj.cn

4.bet

4.st

4.vacations

4.fashion

4.gs.cn

4.sb

4.sv

4.ro

4.la

4.fitness

4.ie

4.mr

4.je

4.pages.dev

4.berlin

4.wedding

4.cc

4.amsterdam

4.cl

4.gold

4.he.cn

4.church

4.cz

4.network

4.s3.amazonaws.com

4.dating

4.plus

4.co.uk

4.githubusercontent.com

4.pl

4.is

4.ly

4.bj.cn

4.gg

4.my

4.ln.cn

4.org.cn

4.best

4.events

4.tips

4.co.nz

4.in-addr.arpa

DNS History

1 record (1 active, 0 former)

●CNAMEsecure.c10r.facebook.com2026-07-08 → 2026-07-18 · 2 obs

● 2026-07-08 16:21:54
● 2026-07-18 07:38:58

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
facebook.com	a.ns.facebook.com, b.ns.facebook.com, c.ns.facebook.com, d.ns.facebook.com	-

✅ Authoritative Response

Server:129.134.30.12

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 facebook.com (unsigned zone)

⏱️ Timing

Total: 103ms | Queries: -

📄 Records

Type	Count	Sample Data
CNAME	1	`secure.c10r.facebook.com`

Analysis

Hierarchy

213.4.secure.facebook.com is a subdomain of 4.secure.facebook.com.

IP Addresses

4.secure.facebook.com points to the IP addresses 31.13.66.1 and 2a03:2880:f003:c1b:face:b00c:0:2b80

The host names edge-secure-shv-01-iad3.facebook.com, edge-secure6-shv-01-iad3.facebook.com, work.facebook.com and secure.c10r.facebook.com all share IP numbers with 4.secure.facebook.com.

4.secure.facebook.com - robtex.com