`officebook.app`

DNSSEC	⚠️ Not signed
A	75.2.60.5^{🇺🇸 Amazon75.2.60.0/24 Prod}
		PTR	`acd89244c803f7181.awsglobalaccelerator.com`
NS	`dns1.registrar-servers.com` ⭐
		A	2610:a1:1024::200^{🇺🇸 MAINT-ID-120082610:a1:1024::/48 Neustar}
			PTR	`dns1.namecheaphosting.com`
			PTR	`dns1.registrar-servers.com`
		A	156.154.132.200^{🇺🇸 MAINT-ID-12008156.154.132.0/24 Neustar}
			PTR	`dns1.namecheaphosting.com`
			PTR	`dns1.registrar-servers.com`
NS	`dns2.registrar-servers.com`
		A	2610:a1:1025::200^{🇺🇸 MAINT-ID-120082610:a1:1025::/48 Neustar}
			PTR	`dns2.namecheaphosting.com`
			PTR	`dns2.registrar-servers.com`
		A	156.154.133.200^{🇺🇸 MAINT-ID-12008156.154.133.0/24 Neustar}
			PTR	`dns2.namecheaphosting.com`
			PTR	`dns2.registrar-servers.com`
MX	`eforward1.registrar-servers.com` ⭐
		A	162.255.118.51^{🇺🇸 NAMCHEAP-PH162.255.118.0/24 Namecheap, Inc. 11400 W. Olympic Blvd. Suite 200 Los Angeles, CA 90064 UNITED STATES}
			PTR	`eforward1.registrar-servers.com`
			PTR	`eforward3.registrar-servers.com`
MX	`eforward2.registrar-servers.com` ⭐
		A	162.255.118.52^{🇺🇸 NAMCHEAP-PH162.255.118.0/24 Namecheap, Inc. 11400 W. Olympic Blvd. Suite 200 Los Angeles, CA 90064 UNITED STATES}
			PTR	`eforward2.registrar-servers.com`
MX	`eforward3.registrar-servers.com` ⭐
		A	162.255.118.51^{🇺🇸 NAMCHEAP-PH162.255.118.0/24 Namecheap, Inc. 11400 W. Olympic Blvd. Suite 200 Los Angeles, CA 90064 UNITED STATES}
			PTR	`eforward1.registrar-servers.com`
			PTR	`eforward3.registrar-servers.com`
MX	`eforward4.registrar-servers.com`⁽¹⁵⁾
		A	162.255.118.52^{🇺🇸 NAMCHEAP-PH162.255.118.0/24 Namecheap, Inc. 11400 W. Olympic Blvd. Suite 200 Los Angeles, CA 90064 UNITED STATES}
			PTR	`eforward2.registrar-servers.com`
MX	`eforward5.registrar-servers.com`⁽²⁰⁾
		A	162.255.118.51^{🇺🇸 NAMCHEAP-PH162.255.118.0/24 Namecheap, Inc. 11400 W. Olympic Blvd. Suite 200 Los Angeles, CA 90064 UNITED STATES}
			PTR	`eforward1.registrar-servers.com`
			PTR	`eforward3.registrar-servers.com`
TXT	`v=spf1 include:spf.efwd.registrar-servers.com ~all`
SOA	`dns1.registrar-servers.com`hostmaster@registrar-servers.com serial=1769120943

`app`

	DNSSEC	🔒 Signed (DS record present)
	NS	`ns-tld1.charlestonroadregistry.com` ⭐
	NS	`ns-tld2.charlestonroadregistry.com`
	NS	`ns-tld3.charlestonroadregistry.com`
	NS	`ns-tld4.charlestonroadregistry.com`
	NS	`ns-tld5.charlestonroadregistry.com`
	SOA	`ns-tld1.charlestonroadregistry.com`cloud-dns-hostmaster@google.com serial=101427

🔒 HSTS Preload (+subdomains)

Subdomains

www.officebook.app

Same first word

officebook.de

officebook.com

officebook.app

officebook.in

officebook.sk

Similar names

bookoffice.com

DNS History

8 records (8 active, 0 former)

●NSdns1.registrar-servers.com2026-03-15 → 2026-03-25 · 2 obs

● 2026-03-15 02:20:10
● 2026-03-25 17:33:02

●NSdns2.registrar-servers.com2026-03-15 → 2026-03-25 · 2 obs

● 2026-03-15 02:20:10
● 2026-03-25 17:33:02

●MXeforward1.registrar-servers.com2026-03-15 → 2026-03-25 · 2 obs

● 2026-03-15 02:20:10
● 2026-03-25 17:33:02

●MXeforward2.registrar-servers.com2026-03-15 → 2026-03-25 · 2 obs

● 2026-03-15 02:20:10
● 2026-03-25 17:33:02

●MXeforward3.registrar-servers.com2026-03-15 → 2026-03-25 · 2 obs

● 2026-03-15 02:20:10
● 2026-03-25 17:33:02

●MXeforward4.registrar-servers.com2026-03-15 → 2026-03-25 · 2 obs

● 2026-03-15 02:20:10
● 2026-03-25 17:33:02

●MXeforward5.registrar-servers.com2026-03-15 → 2026-03-25 · 2 obs

● 2026-03-15 02:20:10
● 2026-03-25 17:33:02

●A75.2.60.52026-03-15 → 2026-03-25 · 2 obs

● 2026-03-15 02:20:10
● 2026-03-25 17:33:02

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
app	ns-tld5.charlestonroadregistry.com, ns-tld3.charlestonroadregistry.com, ns-tld1.charlestonroadregistry.com, ns-tld2.charlestonroadregistry.com...	-
officebook.app	dns2.registrar-servers.com, dns1.registrar-servers.com	-

✅ Authoritative Response

Server:156.154.133.200

NS records: dns2.registrar-servers.com, dns1.registrar-servers.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for officebook.app (unsigned zone)

⏱️ Timing

Total: 597ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`75.2.60.5`
NS	2	`dns1.registrar-servers.com, dns2.registrar-servers.com`
MX	5	`eforward1.registrar-servers.com (pri: 10, eforward2.registrar-servers.com (pri: 10...`
TXT	1	`v=spf1 include:spf.efwd.registrar-server`
SOA	1	`dns1.registrar-servers.com hostmaster.re`

Analysis

Hierarchy

The parent of www.officebook.app is officebook.app.

IP Addresses

officebook.app points to IP number: 75.2.60.5.

Other host names such as homesell.co.nz, deerrunhomesforsale.com, rebelliondefense.com, lascatalinasmall.com and ceritacintaku.com share IPs with officebook.app.

Name Servers

officebook.app is delegated to two name servers: dns1.registrar-servers.com and dns2.registrar-servers.com.

officebook.app shares the same name server setup as gabali.us, a911.com, curtopropiedades.com, (0x736578)valley.net and crqsn.life.

officebook.app at least partially shares name servers with other domains, for instance automlm.com, dexious.com, tech-s.com, johndoesociety.com and tyckle.info.

These name servers are commonly used together with dns3.registrar-servers.com, dns4.registrar-servers.com and dns5.registrar-servers.com.

Host names with two IP numbers: dns1.registrar-servers.com points to: 2610:a1:1024::200 and 156.154.132.200; dns2.registrar-servers.com points to: 2610:a1:1025::200 and 156.154.133.200.

Mail Servers

Five mail servers handle officebook.app: eforward1.registrar-servers.com, eforward2.registrar-servers.com, eforward3.registrar-servers.com, eforward4.registrar-servers.com and eforward5.registrar-servers.com.

officebook.app shares at least partially some mail servers with other domains, including whyscan.net, adrianpeterson.co, noffqaygohcarn.com, 5ac.info and role-up.com.