gitbook.com - dns.ninja

`gitbook.com`

DNSSEC	⚠️ Not signed
A	2606:4700:4404::6812:2959^{🇺🇸 Cloudflare2606:4700:4404::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2a06:98c1:310d::ac40:92a7^{🇺🇸 Cloudflare2a06:98c1:310d::/48} ✓ In HTTPS hints
A	104.18.41.89^{Cloudflare104.18.41.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.64.146.167^{🇺🇸 Cloudflare172.64.146.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`dahlia.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3a59^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`dahlia.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c059^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`dahlia.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2059^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`dahlia.ns.cloudflare.com`
		A	108.162.192.89^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`dahlia.ns.cloudflare.com`
		A	172.64.32.89^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`dahlia.ns.cloudflare.com`
		A	173.245.58.89^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`dahlia.ns.cloudflare.com`
NS	`hugh.ns.cloudflare.com`
		A	2606:4700:58::adf5:3b75^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`hugh.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c175^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`hugh.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2175^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`hugh.ns.cloudflare.com`
		A	108.162.193.117^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`hugh.ns.cloudflare.com`
		A	172.64.33.117^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`hugh.ns.cloudflare.com`
		A	173.245.59.117^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`hugh.ns.cloudflare.com`
MX	`aspmx.l.google.com` ⭐
		A	2607:f8b0:4004:c19::1a^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`bk-in-f26.1e100.net`
		A	172.253.63.26^{🇺🇸 Google172.253.63.0/24}
			PTR	`bi-in-f26.1e100.net`
MX	`alt1.aspmx.l.google.com`⁽⁵⁾
		A	2800:3f0:4003:c0f::1a^{🇨🇱 Google2800:3f0:4003::/48}
		A	108.177.123.26^{🇺🇸 Google108.177.123.0/24}
			PTR	`lcscld-in-f26.1e100.net`
MX	`alt2.aspmx.l.google.com`⁽⁵⁾
		A	2a00:1450:400b:c02::1b^{🇮🇪 Google2a00:1450:400b::/48}
			PTR	`dj-in-f27.1e100.net`
		A	172.253.116.26^{🇺🇸 Google172.253.116.0/24}
			PTR	`dj-in-f26.1e100.net`
MX	`alt3.aspmx.l.google.com`⁽¹⁰⁾
		A	2a00:1450:4009:c0f::1a^{🇬🇧 Google2a00:1450:4009::/48}
			PTR	`yulhrs-in-f26.1e100.net`
		A	192.178.223.27^{🇺🇸 Google192.178.223.0/24}
			PTR	`yulhrs-in-f27.1e100.net`
MX	`alt4.aspmx.l.google.com`⁽¹⁰⁾
		A	2a00:1450:400c:c23::1a^{🇧🇪 Google2a00:1450:400c::/48}
			PTR	`yubrupd-in-f26.1e100.net`
		A	172.253.157.26^{🇺🇸 Google172.253.0.0/16}
			PTR	`yubrupd-in-f26.1e100.net`
TXT	`1eimfvl6smqf32ddsbrt935qqq`
TXT	`5c89abfus0pgntcdrib3m156gp`
TXT	`firebase=gitbook-28427`
TXT	`google-site-verification=-MPeja1woOvE2Hs6BcUDgkCeYG9ZaAaCPqEyCMyXYLo`
TXT	`google-site-verification=XTowlLW9jzAGRzz5Y7FkWT7IbJhWFjJuHwj0ex0vI38`
TXT	`google-site-verification=YEfVo29t-jyIdELW1-F_B1XQZBsknBgjKdvVXYsBaXc`
TXT	`google-site-verification=ojxGhAwymkbkr39GFI8VBvWzC9THYX6WQABf9Q9-qyY`
TXT	`google-site-verification=vjg2Tbif0nJQ-Kto4AwyZ5VnSSy6tHvD6vnJ0c5uMvk`
TXT	`openai-domain-verification=dv-LB8QOARyXE6YrjhX64RDyf8U`
TXT	`v=spf1 a mx include:_spf.google.com include:sendgrid.net include:stspg-custom...`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.18.41.89, 172.64.146.167
		IPv6 hints	2606:4700:4404::6812:2959, 2a06:98c1:310d::ac40:92a7
SOA	`dahlia.ns.cloudflare.com`dns@cloudflare.com serial=2406699130

`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=1781544440

rank #2635 globally
rank #1378 in the tld
WOT: SAFE (79/100)
📈 Tranco rank: #7,079

Subdomains

v2-content.gitbook.com

fonts.gitbook.com

blobscdn.gitbook.com

integrations.gitbook.com

segment-api.gitbook.com

app.gitbook.com

www.gitbook.com

static.gitbook.com

hosting.gitbook.com

channels.gitbook.com

gblobscdn.gitbook.com

blobs.gitbook.com

static-2c.gitbook.com

static-2v.gitbook.com

api.gitbook.com

legacy.gitbook.com

Same first word

gitbook.wtf

gitbook.com

gitbook.space

gitbook.io

gitbook.site

gitbook.me

gitbook.cn

gitbook.org

gitbook.net

gitbook.ai

Similar names

tgibook.com

DNS History

27 records (11 active, 16 former)

●NSdahlia.ns.cloudflare.com2017-02-05 → 2026-06-15 · 3 obs

○ 2016-07-09 21:43:50
● 2017-02-05 11:22:08
● 2026-06-15 17:31:18

●NShugh.ns.cloudflare.com2017-02-05 → 2026-06-15 · 3 obs

○ 2016-07-09 21:43:50
● 2017-02-05 11:22:08
● 2026-06-15 17:31:18

○NSns-cloud-c1.googledomains.com2015-07-16 → 2016-07-09 · 4 obs

● 2015-07-16 01:47:30
● 2016-07-09 21:43:50
○ 2017-02-05 11:22:08
○ 2026-06-15 17:31:18

○NSns-cloud-c2.googledomains.com2015-07-16 → 2016-07-09 · 4 obs

● 2015-07-16 01:47:30
● 2016-07-09 21:43:50
○ 2017-02-05 11:22:08
○ 2026-06-15 17:31:18

○NSns-cloud-c3.googledomains.com2015-07-16 → 2016-07-09 · 4 obs

● 2015-07-16 01:47:30
● 2016-07-09 21:43:50
○ 2017-02-05 11:22:08
○ 2026-06-15 17:31:18

○NSns-cloud-c4.googledomains.com2015-07-16 → 2016-07-09 · 4 obs

● 2015-07-16 01:47:30
● 2016-07-09 21:43:50
○ 2017-02-05 11:22:08
○ 2026-06-15 17:31:18

●MXalt1.aspmx.l.google.com2015-07-16 → 2026-06-15 · 2 obs

● 2015-07-16 01:47:30
● 2026-06-15 17:31:18

●MXalt2.aspmx.l.google.com2015-07-16 → 2026-06-15 · 2 obs

● 2015-07-16 01:47:30
● 2026-06-15 17:31:18

●MXalt3.aspmx.l.google.com2015-07-16 → 2026-06-15 · 2 obs

● 2015-07-16 01:47:30
● 2026-06-15 17:31:18

●MXalt4.aspmx.l.google.com2015-07-16 → 2026-06-15 · 2 obs

● 2015-07-16 01:47:30
● 2026-06-15 17:31:18

●MXaspmx.l.google.com2015-07-16 → 2026-06-15 · 2 obs

● 2015-07-16 01:47:30
● 2026-06-15 17:31:18

●A104.18.41.892026-02-16 → 2026-06-15 · 3 obs

○ 2018-05-25 12:12:40
● 2026-02-16 06:18:48
● 2026-06-15 17:31:18

○A104.25.212.202017-02-05 → 2018-05-25 · 5 obs

○ 2016-07-09 21:43:50
● 2017-02-05 11:22:08
● 2018-05-25 12:12:40
○ 2026-02-16 06:18:48
○ 2026-06-15 17:31:18

○A104.25.213.202017-02-05 → 2018-05-25 · 5 obs

○ 2016-07-09 21:43:50
● 2017-02-05 11:22:08
● 2018-05-25 12:12:40
○ 2026-02-16 06:18:48
○ 2026-06-15 17:31:18

●A172.64.146.1672026-02-16 → 2026-06-15 · 3 obs

○ 2018-05-25 12:12:40
● 2026-02-16 06:18:48
● 2026-06-15 17:31:18

○A2001:4860:4802:32::152015-07-16 → 2016-07-09 · 4 obs

● 2015-07-16 01:47:30
● 2016-07-09 21:43:50
○ 2017-02-05 11:22:08
○ 2026-06-15 17:31:18

○A2001:4860:4802:34::152015-07-16 → 2016-07-09 · 4 obs

● 2015-07-16 01:47:30
● 2016-07-09 21:43:50
○ 2017-02-05 11:22:08
○ 2026-06-15 17:31:18

○A2001:4860:4802:36::152015-07-16 → 2016-07-09 · 4 obs

● 2015-07-16 01:47:30
● 2016-07-09 21:43:50
○ 2017-02-05 11:22:08
○ 2026-06-15 17:31:18

○A2001:4860:4802:38::152015-07-16 → 2016-07-09 · 4 obs

● 2015-07-16 01:47:30
● 2016-07-09 21:43:50
○ 2017-02-05 11:22:08
○ 2026-06-15 17:31:18

○A216.239.32.212015-07-16 → 2016-07-09 · 4 obs

● 2015-07-16 01:47:30
● 2016-07-09 21:43:50
○ 2017-02-05 11:22:08
○ 2026-06-15 17:31:18

○A216.239.34.212015-07-16 → 2016-07-09 · 4 obs

● 2015-07-16 01:47:30
● 2016-07-09 21:43:50
○ 2017-02-05 11:22:08
○ 2026-06-15 17:31:18

○A216.239.36.212015-07-16 → 2016-07-09 · 4 obs

● 2015-07-16 01:47:30
● 2016-07-09 21:43:50
○ 2017-02-05 11:22:08
○ 2026-06-15 17:31:18

○A216.239.38.212015-07-16 → 2016-07-09 · 4 obs

● 2015-07-16 01:47:30
● 2016-07-09 21:43:50
○ 2017-02-05 11:22:08
○ 2026-06-15 17:31:18

○A2400:cb00:2048:1::6819:d4142017-02-05 → 2018-05-25 · 5 obs

○ 2016-07-09 21:43:50
● 2017-02-05 11:22:08
● 2018-05-25 12:12:40
○ 2026-02-16 06:18:48
○ 2026-06-15 17:31:18

○A2400:cb00:2048:1::6819:d5142017-02-05 → 2018-05-25 · 5 obs

○ 2016-07-09 21:43:50
● 2017-02-05 11:22:08
● 2018-05-25 12:12:40
○ 2026-02-16 06:18:48
○ 2026-06-15 17:31:18

●A2606:4700:4404::6812:29592026-02-16 → 2026-06-15 · 3 obs

○ 2018-05-25 12:12:40
● 2026-02-16 06:18:48
● 2026-06-15 17:31:18

●A2a06:98c1:310d::ac40:92a72026-02-16 → 2026-06-15 · 3 obs

○ 2018-05-25 12:12:40
● 2026-02-16 06:18:48
● 2026-06-15 17:31:18

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	j.gtld-servers.net, e.gtld-servers.net, c.gtld-servers.net, b.gtld-servers.net...	-
gitbook.com	hugh.ns.cloudflare.com, dahlia.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.192.89

NS records: hugh.ns.cloudflare.com, dahlia.ns.cloudflare.com

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 782ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.64.146.167, 104.18.41.89`
AAAA	2	`2a06:98c1:310d::ac40:92a7, 2606:4700:4404::6812:2959`
NS	2	`dahlia.ns.cloudflare.com, hugh.ns.cloudflare.com`
MX	5	`aspmx.l.google.com (pri: 1), alt3.aspmx.l.google.com (pri: 10)...`
TXT	10	`1eimfvl6smqf32ddsbrt935qqq, 5c89abfus0pgntcdrib3m156gp...`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`dahlia.ns.cloudflare.com dns.cloudflare.`

📌 Glue Records Collected

Total: 12

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

Analysis

Hierarchy

The host names v2-content.gitbook.com, fonts.gitbook.com, blobscdn.gitbook.com, integrations.gitbook.com and segment-api.gitbook.com — among a few others — fall under the parent domain gitbook.com.

IP Addresses

gitbook.com directs to four IP numbers, which are 104.18.41.89, 172.64.146.167, 2606:4700:4404::6812:2959 and 2a06:98c1:310d::ac40:92a7.

Among the host names that share IP numbers with gitbook.com are channels.gitbook.com, segment-box.com, www.dubuy.com.cdn.cloudflare.net and two others.

Name Servers

DNS delegation for gitbook.com points to two name servers: dahlia.ns.cloudflare.com and hugh.ns.cloudflare.com.

gitbook.com has the same name server delegation as a number of other domains, such as tanputas.com, knjiznica-jesenice.si, gitbook-staging.io and two more.

At least some of gitbook.com's name servers are shared with other domains, for example bolarexantio.sbs, textmap.today, vavada-voldemort.top and two more.

These name servers tend to be deployed in combination with the name servers sullivan.ns.cloudflare.com and jaime.ns.cloudflare.com.

Host names resolving to 6 IP numbers:

dahlia.ns.cloudflare.com has IP addresses 108.162.192.89, 172.64.32.89 and 173.245.58.89, plus 3 other.

hugh.ns.cloudflare.com has IP addresses 108.162.193.117, 172.64.33.117 and 173.245.59.117, plus 3 other.

Mail Servers

Five mail servers handle gitbook.com: aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com and two others.

gitbook.com shares at least some of its mail servers with other domains — for example ns500759.ns500758.ns500759.ns500759.ns500736.ns500735.ns500698.ns500698.ns500698.ns500735.ns500698.ns500708.ns500576.ns500686.ns500576.ns500576.trackreceptor.com, ns500754.ns500671.ns500754.ns500688.ns500704.ns500671.ns500671.ns500688.ns500649.ns500649.ns500666.ns500142.lusty(0x736c7574)z.com, ns500758.ns500759.ns500759.ns500759.ns500758.ns500735.ns500698.ns500735.ns500698.ns500736.ns500708.ns500698.ns500576.ns500698.ns500686.ns500652.ns500619.trackreceptor.com and two more.

It is common for these mail servers to co-occur with alt3.aspmx.l.google.com, alt4.aspmx.l.google.com, aspmx2.googlemail.com and aspmx3.googlemail.com as mail servers.

Hosts with two IP numbers each:

aspmx.l.google.com has two IP addresses: 172.253.63.26 and 2607:f8b0:4004:c19::1a.

alt1.aspmx.l.google.com has two IP addresses: 108.177.123.26 and 2800:3f0:4003:c0f::1a.

alt2.aspmx.l.google.com has two IP addresses: 172.253.116.26 and 2a00:1450:400b:c02::1b.

alt3.aspmx.l.google.com has two IP addresses: 192.178.223.27 and 2a00:1450:4009:c0f::1a.

alt4.aspmx.l.google.com has two IP addresses: 172.253.157.26 and 2a00:1450:400c:c23::1a.