`captionbook.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3030::ac43:dc16^{🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3037::6815:264d^{🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.38.77^{Cloudflare104.21.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.220.22^{🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`burt.ns.cloudflare.com` ⭐
		A	2606:4700:58::adf5:3b4f^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`burt.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c14f^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`burt.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:214f^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`burt.ns.cloudflare.com`
		A	108.162.193.79^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`burt.ns.cloudflare.com`
		A	172.64.33.79^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`burt.ns.cloudflare.com`
		A	173.245.59.79^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`burt.ns.cloudflare.com`
NS	`emily.ns.cloudflare.com`
		A	2606:4700:50::adf5:3a9b^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`emily.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c09b^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`emily.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:209b^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`emily.ns.cloudflare.com`
		A	108.162.192.155^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`emily.ns.cloudflare.com`
		A	172.64.32.155^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`emily.ns.cloudflare.com`
		A	173.245.58.155^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`emily.ns.cloudflare.com`
MX	`_dc-mx.61ae2b8b11b2.captionbook.com` ⭐
		A	104.152.168.202^{🇨🇦 CROCWEB-1104.152.168.0/22 CrocWeb}
			PTR	`drh1.hostwhitelabel.com`
TXT	`v=spf1 a mx ip4:104.152.168.202 include:spf.hostwhitelabel.com ~all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4	104.21.38.77, 172.67.220.22
		IPv6	2606:4700:3030::ac43:dc16, 2606:4700:3037::6815:264d
SOA	`burt.ns.cloudflare.com`dns@cloudflare.com serial=2399071229

`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=1774535142

Same first word

captionbook.com

DNS History

12 records (7 active, 5 former)

●NSburt.ns.cloudflare.com2026-02-21 → 2026-03-26 · 3 obs

○ 2017-05-15 03:16:34
● 2026-02-21 23:36:52
● 2026-03-26 14:35:36

●NSemily.ns.cloudflare.com2026-02-21 → 2026-03-26 · 3 obs

○ 2017-05-15 03:16:34
● 2026-02-21 23:36:52
● 2026-03-26 14:35:36

○NSns1.yourhostingaccount.com2015-06-09 → 2017-05-15 · 4 obs

● 2015-06-09 03:18:28
● 2017-05-15 03:16:34
○ 2026-02-21 23:36:52
○ 2026-03-26 14:35:36

○NSns2.yourhostingaccount.com2015-06-09 → 2017-05-15 · 4 obs

● 2015-06-09 03:18:28
● 2017-05-15 03:16:34
○ 2026-02-21 23:36:52
○ 2026-03-26 14:35:36

●MX_dc-mx.61ae2b8b11b2.captionbook.com2026-02-21 → 2026-03-26 · 3 obs

○ 2017-05-15 03:16:34
● 2026-02-21 23:36:52
● 2026-03-26 14:35:36

○MXmx.captionbook.com2015-06-09 → 2017-05-15 · 4 obs

● 2015-06-09 03:18:28
● 2017-05-15 03:16:34
○ 2026-02-21 23:36:52
○ 2026-03-26 14:35:36

●A104.21.38.772026-02-21 → 2026-03-26 · 3 obs

○ 2017-05-15 03:16:34
● 2026-02-21 23:36:52
● 2026-03-26 14:35:36

●A172.67.220.222026-02-21 → 2026-03-26 · 3 obs

○ 2017-05-15 03:16:34
● 2026-02-21 23:36:52
● 2026-03-26 14:35:36

●A2606:4700:3030::ac43:dc162026-02-21 → 2026-03-26 · 3 obs

○ 2017-05-15 03:16:34
● 2026-02-21 23:36:52
● 2026-03-26 14:35:36

●A2606:4700:3037::6815:264d2026-02-21 → 2026-03-26 · 3 obs

○ 2017-05-15 03:16:34
● 2026-02-21 23:36:52
● 2026-03-26 14:35:36

○A66.96.149.322016-04-07 → 2017-05-15 · 5 obs

○ 2016-01-16 04:20:30
● 2016-04-07 03:00:26
● 2017-05-15 03:16:34
○ 2026-02-21 23:36:52
○ 2026-03-26 14:35:36

○A66.96.161.1532015-06-09 → 2016-01-16 · 4 obs

● 2015-06-09 03:18:28
● 2016-01-16 04:20:30
○ 2016-04-07 03:00:26
○ 2026-03-26 14:35:36

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	d.gtld-servers.net, i.gtld-servers.net, a.gtld-servers.net, f.gtld-servers.net...	-
captionbook.com	emily.ns.cloudflare.com, burt.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.192.155

NS records: emily.ns.cloudflare.com, burt.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for captionbook.com (unsigned zone)

⏱️ Timing

Total: 243ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.38.77, 172.67.220.22`
AAAA	2	`2606:4700:3030::ac43:dc16, 2606:4700:3037::6815:264d`
NS	2	`burt.ns.cloudflare.com, emily.ns.cloudflare.com`
MX	1	`_dc-mx.61ae2b8b11b2.captionbook.com (pri`
TXT	1	`v=spf1 a mx ip4:104.152.168.202 include:`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`burt.ns.cloudflare.com dns.cloudflare.co`

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

captionbook.com resolves to four IP numbers: 2606:4700:3030::ac43:dc16, 2606:4700:3037::6815:264d, 104.21.38.77 and 172.67.220.22.

other host names for instance kerajaanslotmega.com, tausendkraut.com, mixw.net, www.proxi.tn and lashonimi.co.il share IP numbers with captionbook.com.

Name Servers

captionbook.com is delegated to two name servers: burt.ns.cloudflare.com and emily.ns.cloudflare.com.

captionbook.com shares the same name server setup as other domains, for example sss-lb.com, reflectionsprojections.org, lebanesefoodbank.org, toybarnstorage.com and aiso-intl.com.

captionbook.com at least partially shares name servers with other domains, for instance hrushikesh.net, spbharill.com, klikindomaret.com, as1403.net and diefs.com.br.

Host names with six IP numbers:

burt.ns.cloudflare.com points to: 2606:4700:58::adf5:3b4f, 2803:f800:50::6ca2:c14f, 2a06:98c1:50::ac40:214f, 108.162.193.79, 172.64.33.79 and 173.245.59.79; emily.ns.cloudflare.com points to: 2606:4700:50::adf5:3a9b, 2803:f800:50::6ca2:c09b, 2a06:98c1:50::ac40:209b, 108.162.192.155, 172.64.32.155 and 173.245.58.155.

Mail Servers

captionbook.com is handled by a single mail server, _dc-mx.61ae2b8b11b2.captionbook.com.

Host name _dc-mx.61ae2b8b11b2.captionbook.com points to IP address 104.152.168.202.

captionbook.com - robtex.com

captionbook.com

com

Same first word

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

📌 Glue Records Collected

Analysis

IP Addresses

Name Servers

Mail Servers

`captionbook.com`

`com`