`bookcliffsoftware.com`

DNSSEC	⚠️ Not signed
A	13.226.209.69^{🇺🇸 Amazon13.226.209.0/24 - Cloudfront}
		PTR	`server-13-226-209-69.iad61.r.cloudfront.net`
A	13.226.209.79^{🇺🇸 Amazon13.226.209.0/24 - Cloudfront}
A	13.226.209.120^{🇺🇸 Amazon13.226.209.0/24 - Cloudfront}
A	13.226.209.129^{🇺🇸 Amazon13.226.209.0/24 - Cloudfront}
NS	`ns-831.awsdns-39.net` ⭐
		A	2600:9000:5303:3f00::1^{🇺🇸 Amazon2600:9000:5303::/48 - CloudFront}
			PTR	`ns-831.awsdns-39.net`
		A	205.251.195.63^{🇺🇸 Amazon205.251.195.0/24 prefix}
			PTR	`ns-831.awsdns-39.net`
NS	`ns-1443.awsdns-52.org`
		A	2600:9000:5305:a300::1^{🇺🇸 Amazon2600:9000:5305::/48 - CloudFront}
			PTR	`ns-1443.awsdns-52.org`
		A	205.251.197.163^{🇺🇸 Amazon205.251.197.0/24 prefix}
			PTR	`ns-1443.awsdns-52.org`
NS	`ns-1599.awsdns-07.co.uk`
		A	2600:9000:5306:3f00::1^{🇺🇸 Amazon2600:9000:5306::/48 - CloudFront}
			PTR	`ns-1599.awsdns-07.co.uk`
		A	205.251.198.63^{🇺🇸 Amazon205.251.198.0/24 prefix}
			PTR	`ns-1599.awsdns-07.co.uk`
NS	`ns-420.awsdns-52.com`
		A	2600:9000:5301:a400::1^{🇺🇸 Amazon2600:9000:5301::/48 - CloudFront}
			PTR	`ns-420.awsdns-52.com`
		A	205.251.193.164^{🇺🇸 Amazon205.251.193.0/24 prefix}
			PTR	`ns-420.awsdns-52.com`
MX	`aspmx.l.google.com` ⭐
		A	2607:f8b0:4004:c19::1b^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`bk-in-f27.1e100.net`
		A	172.253.62.27^{🇺🇸 Google172.253.62.0/24}
			PTR	`bc-in-f27.1e100.net`
MX	`alt1.aspmx.l.google.com`⁽⁵⁾
		A	2607:f8b0:4003:c30::1b^{🇺🇸 Google2607:f8b0:4003::/48}
			PTR	`yutulis-in-f27.1e100.net`
		A	74.125.27.26^{🇺🇸 Google74.125.27.0/24}
			PTR	`yutulis-in-f26.1e100.net`
MX	`alt2.aspmx.l.google.com`⁽⁵⁾
		A	2607:f8b0:4001:c70::1a^{🇺🇸 Google2607:f8b0:4001::/48}
			PTR	`yucbful-in-f26.1e100.net`
		A	192.178.209.26^{🇺🇸 Google192.178.209.0/24}
			PTR	`yucbful-in-f26.1e100.net`
MX	`alt3.aspmx.l.google.com`⁽¹⁰⁾
		A	2607:f8b0:4024:c0d::1b^{🇺🇸 Google2607:f8b0::/32}
			PTR	`mj-in-f27.1e100.net`
		A	192.178.152.26^{🇺🇸 Google192.178.152.0/24}
			PTR	`mj-in-f26.1e100.net`
MX	`alt4.aspmx.l.google.com`⁽¹⁰⁾
		A	2607:f8b0:4023:403::1a^{🇺🇸 Google2607:f8b0::/32}
			PTR	`gg-in-f26.1e100.net`
		A	142.250.96.27^{🇺🇸 Google142.250.96.0/24}
			PTR	`gg-in-f27.1e100.net`
TXT	`v=spf1 include:_spf.google.com ~all`
SOA	`ns-831.awsdns-39.net`awsdns-hostmaster@amazon.com serial=1

`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

www.bookcliffsoftware.com

Same first word

bookcliffsoftware.com

DNS History

30 records (13 active, 17 former)

●NSns-1443.awsdns-52.org2026-02-15 → 2026-03-07 · 3 obs

○ 2017-09-09 07:31:58
● 2026-02-15 22:16:54
● 2026-03-07 16:03:36

●NSns-1599.awsdns-07.co.uk2026-02-15 → 2026-03-07 · 3 obs

○ 2017-09-09 07:31:58
● 2026-02-15 22:16:54
● 2026-03-07 16:03:36

●NSns-420.awsdns-52.com2026-02-15 → 2026-03-07 · 3 obs

○ 2017-09-09 07:31:58
● 2026-02-15 22:16:54
● 2026-03-07 16:03:36

●NSns-831.awsdns-39.net2026-02-15 → 2026-03-07 · 3 obs

○ 2017-09-09 07:31:58
● 2026-02-15 22:16:54
● 2026-03-07 16:03:36

○NSns71.domaincontrol.com2017-09-09 → 2017-09-09 · 3 obs

● 2017-09-09 07:31:58
○ 2026-02-15 22:16:54
○ 2026-03-07 16:03:36

○NSns72.domaincontrol.com2017-09-09 → 2017-09-09 · 3 obs

● 2017-09-09 07:31:58
○ 2026-02-15 22:16:54
○ 2026-03-07 16:03:36

●MXalt1.aspmx.l.google.com2026-02-15 → 2026-03-07 · 2 obs

● 2026-02-15 22:16:54
● 2026-03-07 16:03:36

●MXalt2.aspmx.l.google.com2026-02-15 → 2026-03-07 · 2 obs

● 2026-02-15 22:16:54
● 2026-03-07 16:03:36

●MXalt3.aspmx.l.google.com2026-02-15 → 2026-03-07 · 2 obs

● 2026-02-15 22:16:54
● 2026-03-07 16:03:36

●MXalt4.aspmx.l.google.com2026-02-15 → 2026-03-07 · 2 obs

● 2026-02-15 22:16:54
● 2026-03-07 16:03:36

●MXaspmx.l.google.com2026-02-15 → 2026-03-07 · 2 obs

● 2026-02-15 22:16:54
● 2026-03-07 16:03:36

●A13.226.209.1202026-02-16 → 2026-03-07 · 79 obs

○ 2026-02-15 22:16:54
○ 2026-02-16 02:34:08
● 2026-02-16 11:42:48
○ 2026-02-16 14:15:44
○ 2026-02-16 22:22:08
● 2026-02-17 00:09:40
○ 2026-02-17 03:22:24
○ 2026-02-17 13:27:56
● 2026-02-17 17:21:50
○ 2026-02-17 17:52:14
○ 2026-02-17 21:53:32
● 2026-02-18 00:10:14
○ 2026-02-18 02:31:32
○ 2026-02-18 22:58:30
● 2026-02-19 00:09:42
○ 2026-02-19 01:47:52
● 2026-02-19 05:26:28
○ 2026-02-19 06:33:08
○ 2026-02-19 20:06:28
● 2026-02-20 00:16:18
● 2026-02-20 03:17:06
○ 2026-02-20 06:43:18
○ 2026-02-21 11:20:24
● 2026-02-21 13:34:50
○ 2026-02-21 14:11:58
○ 2026-02-22 10:52:34
● 2026-02-22 13:43:24
○ 2026-02-22 14:51:54
○ 2026-02-22 17:11:44
● 2026-02-22 18:26:54
○ 2026-02-22 23:56:10
○ 2026-02-23 18:49:10
● 2026-02-23 22:38:54
○ 2026-02-23 23:43:40
○ 2026-02-24 02:19:32
● 2026-02-24 04:32:50
○ 2026-02-24 05:05:28
○ 2026-02-24 22:32:20
● 2026-02-25 00:11:02
○ 2026-02-25 01:49:18
○ 2026-02-25 06:44:30
● 2026-02-25 10:31:58
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○ 2026-02-25 23:36:14
● 2026-02-26 00:10:24
○ 2026-02-26 02:20:56
○ 2026-02-26 23:31:48
● 2026-02-27 00:17:04
○ 2026-02-27 02:28:36
○ 2026-02-27 22:23:38
● 2026-02-28 00:15:24
○ 2026-02-28 05:06:14
○ 2026-02-28 13:10:46
● 2026-02-28 18:06:58
● 2026-03-01 00:54:50
○ 2026-03-01 02:25:22
○ 2026-03-01 04:52:26
● 2026-03-01 05:52:52
○ 2026-03-01 08:07:44
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● 2026-03-01 20:52:56
● 2026-03-01 21:43:18
○ 2026-03-01 22:33:56
○ 2026-03-02 21:40:24
● 2026-03-03 00:14:08
● 2026-03-03 01:34:04
○ 2026-03-03 02:05:08
○ 2026-03-03 21:40:08
● 2026-03-04 00:12:08
○ 2026-03-04 01:31:12
○ 2026-03-06 11:50:54
● 2026-03-06 14:22:04
○ 2026-03-06 16:42:32
○ 2026-03-06 20:22:20
● 2026-03-07 00:11:30
● 2026-03-07 01:02:04
○ 2026-03-07 03:40:44
○ 2026-03-07 13:07:44
● 2026-03-07 16:03:36

●A13.226.209.1292026-02-16 → 2026-03-07 · 79 obs

●A13.226.209.692026-02-16 → 2026-03-07 · 79 obs

●A13.226.209.792026-02-16 → 2026-03-07 · 79 obs

○A13.249.126.202026-02-16 → 2026-03-07 · 115 obs

○ 2026-02-16 11:42:48
● 2026-02-16 14:15:44
○ 2026-02-16 22:22:08
○ 2026-02-17 00:09:40
● 2026-02-17 03:22:24
● 2026-02-17 13:27:56
○ 2026-02-17 17:21:50
● 2026-02-17 17:52:14
● 2026-02-17 21:53:32
○ 2026-02-18 00:10:14
● 2026-02-18 02:31:32
○ 2026-02-18 07:53:48
○ 2026-02-18 10:41:52
● 2026-02-18 14:57:52
● 2026-02-18 22:12:48
○ 2026-02-18 22:58:30
○ 2026-02-19 00:09:42
● 2026-02-19 01:47:52
○ 2026-02-19 05:26:28
● 2026-02-19 06:33:08
● 2026-02-19 14:13:06
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○ 2026-02-20 20:41:06
● 2026-02-20 23:51:44
○ 2026-02-21 02:20:54
○ 2026-02-21 13:34:50
● 2026-02-21 14:11:58
● 2026-02-21 23:25:34
○ 2026-02-22 02:22:52
● 2026-02-22 05:41:20
○ 2026-02-22 08:31:24
● 2026-02-22 10:15:38
● 2026-02-22 10:52:34
○ 2026-02-22 13:43:24
○ 2026-02-22 14:51:54
● 2026-02-22 16:39:36
● 2026-02-22 17:11:44
○ 2026-02-22 18:26:54
○ 2026-02-23 04:44:46
● 2026-02-23 06:32:58
○ 2026-02-23 10:54:38
○ 2026-02-23 13:53:00
● 2026-02-23 18:09:34
○ 2026-02-23 18:49:10
○ 2026-02-23 23:43:40
● 2026-02-24 02:19:32
○ 2026-02-24 04:32:50
○ 2026-02-24 07:16:26
● 2026-02-24 11:37:34
○ 2026-02-24 12:51:28
○ 2026-02-24 14:47:28
● 2026-02-24 16:02:52
● 2026-02-24 17:55:36
○ 2026-02-24 22:32:20
○ 2026-02-25 02:24:36
● 2026-02-25 06:44:30
○ 2026-02-25 10:31:58
● 2026-02-25 15:00:52
● 2026-02-25 16:22:48
○ 2026-02-25 21:01:06
○ 2026-02-26 02:20:56
● 2026-02-26 03:51:56
● 2026-02-26 05:19:32
○ 2026-02-26 07:25:12
○ 2026-02-26 11:42:44
● 2026-02-26 13:12:36
● 2026-02-26 18:02:16
○ 2026-02-26 19:08:36
○ 2026-02-27 02:28:36
● 2026-02-27 03:34:08
● 2026-02-27 05:47:12
○ 2026-02-27 08:54:32
○ 2026-02-27 19:18:48
● 2026-02-27 22:23:38
○ 2026-02-28 00:15:24
● 2026-02-28 05:06:14
● 2026-02-28 13:10:46
○ 2026-02-28 18:06:58
○ 2026-03-01 04:13:26
● 2026-03-01 04:52:26
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○ 2026-03-01 10:33:56
● 2026-03-01 11:52:58
● 2026-03-01 14:26:04
○ 2026-03-01 15:25:26
○ 2026-03-01 21:43:18
● 2026-03-01 22:33:56
○ 2026-03-02 00:11:06
○ 2026-03-02 08:48:26
● 2026-03-02 11:24:38
● 2026-03-02 11:55:14
○ 2026-03-02 12:40:50
○ 2026-03-02 17:29:06
● 2026-03-02 20:15:00
● 2026-03-02 21:40:24
○ 2026-03-03 00:14:08
○ 2026-03-03 12:32:56
● 2026-03-03 21:40:08
○ 2026-03-04 00:12:08
○ 2026-03-04 08:49:36
● 2026-03-04 10:28:34
○ 2026-03-04 12:27:46
○ 2026-03-05 07:06:56
● 2026-03-05 08:31:18
○ 2026-03-05 11:09:48
○ 2026-03-05 15:53:08
● 2026-03-05 17:55:32
○ 2026-03-05 19:11:52
○ 2026-03-06 07:21:16
● 2026-03-06 08:02:00
○ 2026-03-06 11:50:54
○ 2026-03-07 09:54:42
● 2026-03-07 11:06:38
○ 2026-03-07 13:07:44
○ 2026-03-07 16:03:36

○A13.249.126.372026-02-16 → 2026-03-07 · 115 obs

○A13.249.126.482026-02-16 → 2026-03-07 · 115 obs

○A13.249.126.552026-02-16 → 2026-03-07 · 115 obs

○A13.33.153.1082026-02-15 → 2026-02-16 · 8 obs

○ 2017-09-09 07:31:58
● 2026-02-15 22:16:54
● 2026-02-16 02:34:08
○ 2026-02-16 11:42:48
○ 2026-02-16 14:15:44
● 2026-02-16 22:22:08
○ 2026-02-17 00:09:40
○ 2026-03-07 16:03:36

○A13.33.153.152026-02-15 → 2026-02-16 · 8 obs

○ 2017-09-09 07:31:58
● 2026-02-15 22:16:54
● 2026-02-16 02:34:08
○ 2026-02-16 11:42:48
○ 2026-02-16 14:15:44
● 2026-02-16 22:22:08
○ 2026-02-17 00:09:40
○ 2026-03-07 16:03:36

○A13.33.153.62026-02-15 → 2026-02-16 · 8 obs

○ 2017-09-09 07:31:58
● 2026-02-15 22:16:54
● 2026-02-16 02:34:08
○ 2026-02-16 11:42:48
○ 2026-02-16 14:15:44
● 2026-02-16 22:22:08
○ 2026-02-17 00:09:40
○ 2026-03-07 16:03:36

○A13.33.153.72026-02-15 → 2026-02-16 · 8 obs

○ 2017-09-09 07:31:58
● 2026-02-15 22:16:54
● 2026-02-16 02:34:08
○ 2026-02-16 11:42:48
○ 2026-02-16 14:15:44
● 2026-02-16 22:22:08
○ 2026-02-17 00:09:40
○ 2026-03-07 16:03:36

○A160.153.136.32017-09-09 → 2017-09-09 · 3 obs

● 2017-09-09 07:31:58
○ 2026-02-15 22:16:54
○ 2026-03-07 16:03:36

○A182.50.132.2422017-09-09 → 2017-09-09 · 3 obs

● 2017-09-09 07:31:58
○ 2026-02-15 22:16:54
○ 2026-03-07 16:03:36

○A198.71.232.32017-09-09 → 2017-09-09 · 3 obs

● 2017-09-09 07:31:58
○ 2026-02-15 22:16:54
○ 2026-03-07 16:03:36

○A99.86.91.1062026-02-18 → 2026-03-07 · 118 obs

○ 2026-02-18 02:31:32
● 2026-02-18 07:53:48
● 2026-02-18 10:41:52
○ 2026-02-18 14:57:52
○ 2026-02-18 22:12:48
● 2026-02-18 22:58:30
○ 2026-02-19 00:09:42
○ 2026-02-19 14:13:06
● 2026-02-19 15:05:28
● 2026-02-19 20:06:28
○ 2026-02-20 00:16:18
○ 2026-02-20 03:17:06
● 2026-02-20 06:43:18
● 2026-02-20 20:41:06
○ 2026-02-20 23:51:44
● 2026-02-21 02:20:54
● 2026-02-21 11:20:24
○ 2026-02-21 13:34:50
○ 2026-02-21 23:25:34
● 2026-02-22 02:22:52
○ 2026-02-22 05:41:20
● 2026-02-22 08:31:24
○ 2026-02-22 10:15:38
○ 2026-02-22 13:43:24
● 2026-02-22 14:51:54
○ 2026-02-22 16:39:36
○ 2026-02-22 18:26:54
● 2026-02-22 23:56:10
● 2026-02-23 04:44:46
○ 2026-02-23 06:32:58
● 2026-02-23 10:54:38
● 2026-02-23 13:53:00
○ 2026-02-23 18:09:34
● 2026-02-23 18:49:10
○ 2026-02-23 22:38:54
● 2026-02-23 23:43:40
○ 2026-02-24 02:19:32
○ 2026-02-24 04:32:50
● 2026-02-24 05:05:28
● 2026-02-24 07:16:26
○ 2026-02-24 11:37:34
● 2026-02-24 12:51:28
● 2026-02-24 14:47:28
○ 2026-02-24 16:02:52
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● 2026-02-24 22:32:20
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● 2026-02-27 08:54:32
● 2026-02-27 19:18:48
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● 2026-03-01 02:25:22
● 2026-03-01 04:13:26
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● 2026-03-01 08:07:44
● 2026-03-01 10:33:56
○ 2026-03-01 11:52:58
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● 2026-03-01 15:25:26
● 2026-03-01 19:57:00
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● 2026-03-02 00:11:06
● 2026-03-02 08:48:26
○ 2026-03-02 11:24:38
○ 2026-03-02 11:55:14
● 2026-03-02 12:40:50
● 2026-03-02 17:29:06
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○ 2026-03-03 01:34:04
● 2026-03-03 02:05:08
● 2026-03-03 12:32:56
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● 2026-03-04 01:31:12
● 2026-03-04 08:49:36
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● 2026-03-06 07:21:16
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● 2026-03-07 03:40:44
● 2026-03-07 09:54:42
○ 2026-03-07 11:06:38
● 2026-03-07 13:07:44
○ 2026-03-07 16:03:36

○A99.86.91.112026-02-18 → 2026-03-07 · 118 obs

○A99.86.91.292026-02-18 → 2026-03-07 · 118 obs

○A99.86.91.752026-02-18 → 2026-03-07 · 118 obs

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
bookcliffsoftware.com	ns-420.awsdns-52.com, ns-831.awsdns-39.net, ns-1599.awsdns-07.co.uk, ns-1443.awsdns-52.org	1 record

✅ Authoritative Response

Server: 205.251.195.63

NS records: ns-420.awsdns-52.com, ns-831.awsdns-39.net, ns-1599.awsdns-07.co.uk, ns-1443.awsdns-52.org

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for bookcliffsoftware.com (unsigned zone)

⏱️ Timing

Total: 681ms | Queries: -

📄 Records

Type	Count	Sample Data
A	4	`13.226.209.129, 13.226.209.79...`
NS	4	`ns-1443.awsdns-52.org, ns-1599.awsdns-07.co.uk...`
MX	5	`aspmx.l.google.com (pri: 0), alt3.aspmx.l.google.com (pri: 10)...`
TXT	1	`v=spf1 include:_spf.google.com ~all`
SOA	1	`ns-831.awsdns-39.net awsdns-hostmaster.a`