`facebookcore.com`

DNSSEC	⚠️ Not signed
NS	`a.ns.facebook.com` ⭐
		A	2a03:2880:f0fc:c:face:b00c:0:35^{🇺🇸 Facebook2a03:2880:f0fc::/48}
			PTR	`a.ns.facebook.com`
		A	129.134.30.12^{🇺🇸 Facebook129.134.30.0/24 , Inc.}
			PTR	`a.ns.facebook.com`
NS	`b.ns.facebook.com`
		A	2a03:2880:f0fd:c:face:b00c:0:35^{🇺🇸 Facebook2a03:2880:f0fd::/48}
			PTR	`b.ns.facebook.com`
		A	129.134.31.12^{🇺🇸 Facebook129.134.31.0/24 , Inc.}
			PTR	`b.ns.facebook.com`
NS	`c.ns.facebook.com`
		A	2a03:2880:f1fc:c:face:b00c:0:35^{🇺🇸 Facebook2a03:2880:f1fc::/48}
			PTR	`c.ns.facebook.com`
		A	185.89.218.12^{🇮🇱 Facebook185.89.218.0/24}
			PTR	`c.ns.facebook.com`
NS	`d.ns.facebook.com`
		A	2a03:2880:f1fd:c:face:b00c:0:35^{🇺🇸 Facebook2a03:2880:f1fd::/48}
			PTR	`d.ns.facebook.com`
		A	185.89.219.12^{🇮🇱 Facebook185.89.219.0/24}
			PTR	`d.ns.facebook.com`
TXT	`v=spf1 a ~all`
SOA	`a.ns.facebook.com`dns@facebook.com serial=4207849484

`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=1771291435

Subdomains

my-od.facebookcore.com

my-od-1.facebookcore.com

Same first word

facebookcore.com

DNS History

4 records (4 active, 0 former)

●NSa.ns.facebook.com2026-03-15 → 2026-03-15 · 2 obs

● 2026-03-15 03:46:44
● 2026-03-15 20:19:08

●NSb.ns.facebook.com2026-03-15 → 2026-03-15 · 2 obs

● 2026-03-15 03:46:44
● 2026-03-15 20:19:08

●NSc.ns.facebook.com2026-03-15 → 2026-03-15 · 2 obs

● 2026-03-15 03:46:44
● 2026-03-15 20:19:08

●NSd.ns.facebook.com2026-03-15 → 2026-03-15 · 2 obs

● 2026-03-15 03:46:44
● 2026-03-15 20:19:08

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	j.gtld-servers.net, l.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
facebookcore.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 facebookcore.com (unsigned zone)

⏱️ Timing

Total: 254ms | Queries: -

📄 Records

Type	Count	Sample Data
NS	4	`b.ns.facebook.com, d.ns.facebook.com...`
TXT	1	`v=spf1 a ~all`
SOA	1	`a.ns.facebook.com dns.facebook.com`

📌 Glue Records Collected

Total: 8

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

Analysis

Hierarchy

facebookcore.com is a parent of my-od.facebookcore.com and my-od-1.facebookcore.com.

Name Servers

facebookcore.com delegates to four name servers: a.ns.facebook.com, b.ns.facebook.com, c.ns.facebook.com and d.ns.facebook.com.

facebookcore.com at least partially shares name servers with other domains, including whatsappen.com, 87.252.173.in-addr.arpa, bigboxxr.com, arcadegamefacebook.net and faceboo.de.

Host names with two IP numbers: a.ns.facebook.com points to 2a03:2880:f0fc:c:face:b00c:0:35 and 129.134.30.12; b.ns.facebook.com points to 2a03:2880:f0fd:c:face:b00c:0:35 and 129.134.31.12; c.ns.facebook.com points to 2a03:2880:f1fc:c:face:b00c:0:35 and 185.89.218.12; d.ns.facebook.com points to 2a03:2880:f1fd:c:face:b00c:0:35 and 185.89.219.12.

facebookcore.com - robtex.com