`gitbook.guide.inc`

DNSSEC	⚠️ Not signed
A	18.155.21.51^{🇺🇸 Amazon18.155.16.0/21}
		PTR	`server-18-155-21-51.gru3.r.cloudfront.net`
A	18.155.21.76^{🇺🇸 Amazon18.155.16.0/21}
A	18.155.21.91^{🇺🇸 Amazon18.155.16.0/21}
A	18.155.21.110^{🇺🇸 Amazon18.155.16.0/21}

`guide.inc`

	DNSSEC	⚠️ Not signed
	A	13.227.207.65^{🇺🇸 Amazon13.227.200.0/21 - Cloudfront}
	A	13.227.207.67^{🇺🇸 Amazon13.227.200.0/21 - Cloudfront}
	A	13.227.207.81^{🇺🇸 Amazon13.227.200.0/21 - Cloudfront}
	A	13.227.207.84^{🇺🇸 Amazon13.227.200.0/21 - Cloudfront}
	NS	`ns-245.awsdns-30.com` ⭐
	NS	`ns-1373.awsdns-43.org`
	NS	`ns-1677.awsdns-17.co.uk`
	NS	`ns-614.awsdns-12.net`
	MX	`aspmx.l.google.com` ⭐
	MX	`alt1.aspmx.l.google.com`⁽⁵⁾
	MX	`alt2.aspmx.l.google.com`⁽⁵⁾
	MX	`alt3.aspmx.l.google.com`⁽¹⁰⁾
	MX	`alt4.aspmx.l.google.com`⁽¹⁰⁾
	TXT	`MS=ms45832687`
	TXT	`google-site-verification=12aKfzfycryTwOtxQnpI1-kIRIzzWgaphjfcIWT5d9A`
	SOA	`ns-245.awsdns-30.com`awsdns-hostmaster@amazon.com serial=1

Same first word

gitbook.me

gitbook.cn

gitbook.org

gitbook.net

gitbook.ai

gitbook.com

gitbook.io

gitbook.site

Similar names

tgibook.com

DNS History

24 records (4 active, 20 former)

○A13.249.182.1072026-03-17 → 2026-03-17 · 3 obs

● 2026-03-17 16:11:26
○ 2026-03-18 03:00:28
○ 2026-03-29 21:23:00

○A13.249.182.1282026-03-17 → 2026-03-17 · 3 obs

● 2026-03-17 16:11:26
○ 2026-03-18 03:00:28
○ 2026-03-29 21:23:00

○A13.249.182.272026-03-17 → 2026-03-17 · 3 obs

● 2026-03-17 16:11:26
○ 2026-03-18 03:00:28
○ 2026-03-29 21:23:00

○A13.249.182.482026-03-17 → 2026-03-17 · 3 obs

● 2026-03-17 16:11:26
○ 2026-03-18 03:00:28
○ 2026-03-29 21:23:00

○A143.204.68.1022026-03-18 → 2026-03-25 · 8 obs

○ 2026-03-17 16:11:26
● 2026-03-18 03:00:28
● 2026-03-24 02:43:56
○ 2026-03-24 16:18:18
○ 2026-03-25 17:57:34
● 2026-03-25 18:58:00
○ 2026-03-26 08:18:00
○ 2026-03-29 21:23:00

○A143.204.68.1072026-03-18 → 2026-03-25 · 8 obs

○ 2026-03-17 16:11:26
● 2026-03-18 03:00:28
● 2026-03-24 02:43:56
○ 2026-03-24 16:18:18
○ 2026-03-25 17:57:34
● 2026-03-25 18:58:00
○ 2026-03-26 08:18:00
○ 2026-03-29 21:23:00

○A143.204.68.642026-03-18 → 2026-03-25 · 8 obs

○ 2026-03-17 16:11:26
● 2026-03-18 03:00:28
● 2026-03-24 02:43:56
○ 2026-03-24 16:18:18
○ 2026-03-25 17:57:34
● 2026-03-25 18:58:00
○ 2026-03-26 08:18:00
○ 2026-03-29 21:23:00

○A143.204.68.922026-03-18 → 2026-03-25 · 8 obs

○ 2026-03-17 16:11:26
● 2026-03-18 03:00:28
● 2026-03-24 02:43:56
○ 2026-03-24 16:18:18
○ 2026-03-25 17:57:34
● 2026-03-25 18:58:00
○ 2026-03-26 08:18:00
○ 2026-03-29 21:23:00

●A18.155.21.1102026-03-28 → 2026-03-29 · 3 obs

○ 2026-03-28 14:51:34
● 2026-03-28 18:29:40
● 2026-03-29 21:23:00

●A18.155.21.512026-03-28 → 2026-03-29 · 3 obs

○ 2026-03-28 14:51:34
● 2026-03-28 18:29:40
● 2026-03-29 21:23:00

●A18.155.21.762026-03-28 → 2026-03-29 · 3 obs

○ 2026-03-28 14:51:34
● 2026-03-28 18:29:40
● 2026-03-29 21:23:00

●A18.155.21.912026-03-28 → 2026-03-29 · 3 obs

○ 2026-03-28 14:51:34
● 2026-03-28 18:29:40
● 2026-03-29 21:23:00

○A3.164.68.1262026-03-24 → 2026-03-27 · 9 obs

○ 2026-03-24 02:43:56
● 2026-03-24 16:18:18
● 2026-03-25 17:57:34
○ 2026-03-25 18:58:00
○ 2026-03-27 01:50:42
● 2026-03-27 06:33:26
● 2026-03-27 07:44:38
○ 2026-03-28 02:11:26
○ 2026-03-29 21:23:00

○A3.164.68.272026-03-24 → 2026-03-27 · 9 obs

○A3.164.68.352026-03-24 → 2026-03-27 · 9 obs

○A3.164.68.372026-03-24 → 2026-03-27 · 9 obs

○A3.170.19.332026-03-26 → 2026-03-26 · 4 obs

○ 2026-03-25 18:58:00
● 2026-03-26 08:18:00
○ 2026-03-27 01:50:42
○ 2026-03-29 21:23:00

○A3.170.19.482026-03-26 → 2026-03-26 · 4 obs

○ 2026-03-25 18:58:00
● 2026-03-26 08:18:00
○ 2026-03-27 01:50:42
○ 2026-03-29 21:23:00

○A3.170.19.652026-03-26 → 2026-03-26 · 4 obs

○ 2026-03-25 18:58:00
● 2026-03-26 08:18:00
○ 2026-03-27 01:50:42
○ 2026-03-29 21:23:00

○A3.170.19.692026-03-26 → 2026-03-26 · 4 obs

○ 2026-03-25 18:58:00
● 2026-03-26 08:18:00
○ 2026-03-27 01:50:42
○ 2026-03-29 21:23:00

○A52.85.47.1102026-03-27 → 2026-03-28 · 8 obs

○ 2026-03-26 08:18:00
● 2026-03-27 01:50:42
○ 2026-03-27 06:33:26
○ 2026-03-27 07:44:38
● 2026-03-28 02:11:26
● 2026-03-28 14:51:34
○ 2026-03-28 18:29:40
○ 2026-03-29 21:23:00

○A52.85.47.1232026-03-27 → 2026-03-28 · 8 obs

○ 2026-03-26 08:18:00
● 2026-03-27 01:50:42
○ 2026-03-27 06:33:26
○ 2026-03-27 07:44:38
● 2026-03-28 02:11:26
● 2026-03-28 14:51:34
○ 2026-03-28 18:29:40
○ 2026-03-29 21:23:00

○A52.85.47.782026-03-27 → 2026-03-28 · 8 obs

○ 2026-03-26 08:18:00
● 2026-03-27 01:50:42
○ 2026-03-27 06:33:26
○ 2026-03-27 07:44:38
● 2026-03-28 02:11:26
● 2026-03-28 14:51:34
○ 2026-03-28 18:29:40
○ 2026-03-29 21:23:00

○A52.85.47.872026-03-27 → 2026-03-28 · 8 obs

○ 2026-03-26 08:18:00
● 2026-03-27 01:50:42
○ 2026-03-27 06:33:26
○ 2026-03-27 07:44:38
● 2026-03-28 02:11:26
● 2026-03-28 14:51:34
○ 2026-03-28 18:29:40
○ 2026-03-29 21:23:00

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
inc	d.nic.inc, a.nic.inc, b.nic.inc, c.nic.inc	8 records
guide.inc	ns-245.awsdns-30.com, ns-614.awsdns-12.net, ns-1373.awsdns-43.org, ns-1677.awsdns-17.co.uk	-

✅ Authoritative Response

Server:205.251.192.245

NS records: ns-245.awsdns-30.com, ns-614.awsdns-12.net, ns-1373.awsdns-43.org, ns-1677.awsdns-17.co.uk

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for guide.inc (unsigned zone)

⏱️ Timing

Total: 495ms | Queries: -

📄 Records

Type	Count	Sample Data
A	4	`18.155.21.76, 18.155.21.110...`

📌 Glue Records Collected

Total: 8

In-bailiwick: 8 (d.nic.inc, c.nic.inc, b.nic.inc...)

Analysis

IP Addresses

gitbook.guide.inc resolves to four IPs: 18.155.21.51, 18.155.21.76, 18.155.21.91 and 18.155.21.110.

Other host names, for instance dywlcextn6pyg.cloudfront.net, k70-b.tlnk.io, g2h.care, d7zlocfnb3ex7.cloudfront.net and acima.com share IP numbers with gitbook.guide.inc.

gitbook.guide.inc - robtex.com