gitbook.com - dns.ninja

`gitbook.com`

DNSSEC	⚠️ Not signed
A	2606:4700:4403::6812:2959^{🇺🇸 Cloudflare2606:4700:4403::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2a06:98c1:3105::ac40:92a7^{🇺🇸 Cloudflare2a06:98c1:3105::/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:c07::1b^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`bc-in-f27.1e100.net`
		A	142.250.31.26^{🇺🇸 Google142.250.31.0/24}
			PTR	`bj-in-f26.1e100.net`
MX	`alt1.aspmx.l.google.com`⁽⁵⁾
		A	2800:3f0:4003:c0f::1b^{🇨🇱 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	172.253.116.27^{🇺🇸 Google172.253.116.0/24}
			PTR	`dj-in-f27.1e100.net`
MX	`alt3.aspmx.l.google.com`⁽¹⁰⁾
		A	2a00:1450:4009:c0f::1b^{🇬🇧 Google2a00:1450:4009::/48}
			PTR	`yulhrs-in-f27.1e100.net`
		A	192.178.223.26^{🇺🇸 Google192.178.223.0/24}
			PTR	`yulhrs-in-f26.1e100.net`
MX	`alt4.aspmx.l.google.com`⁽¹⁰⁾
		A	2a00:1450:400c:c23::1b^{🇧🇪 Google2a00:1450:400c::/48}
			PTR	`yubrupd-in-f27.1e100.net`
		A	172.253.157.27^{🇺🇸 Google172.253.0.0/16}
			PTR	`yubrupd-in-f27.1e100.net`
TXT	`1eimfvl6smqf32ddsbrt935qqq`
TXT	`5c89abfus0pgntcdrib3m156gp`
TXT	`MS=ms60660329`
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	2606:4700:4403::6812:2959, 2a06:98c1:3105::ac40:92a7
SOA	`dahlia.ns.cloudflare.com`dns@cloudflare.com serial=2411209625

`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=1785750922

rank #2687 globally
rank #1407 in the tld
WOT: SAFE (79/100)
📈 Tranco rank: #7,236

Subdomains

v2-content.gitbook.com

fonts.gitbook.com

blobscdn.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

bookitg.com

tgibook.com

DNS History

29 records (11 active, 18 former)

●NSdahlia.ns.cloudflare.com2017-02-05 → 2026-08-03 · 3 obs

○ 2016-07-09 21:43:50
● 2017-02-05 11:22:08
● 2026-08-03 10:25:00

●NShugh.ns.cloudflare.com2017-02-05 → 2026-08-03 · 3 obs

○ 2016-07-09 21:43:50
● 2017-02-05 11:22:08
● 2026-08-03 10:25:00

○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
○ 2026-08-03 10:25:00

○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
○ 2026-08-03 10:25:00

○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
○ 2026-08-03 10:25:00

○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
○ 2026-08-03 10:25:00

●MXalt1.aspmx.l.google.com2015-07-16 → 2026-08-03 · 2 obs

● 2015-07-16 01:47:30
● 2026-08-03 10:25:00

●MXalt2.aspmx.l.google.com2015-07-16 → 2026-08-03 · 2 obs

● 2015-07-16 01:47:30
● 2026-08-03 10:25:00

●MXalt3.aspmx.l.google.com2015-07-16 → 2026-08-03 · 2 obs

● 2015-07-16 01:47:30
● 2026-08-03 10:25:00

●MXalt4.aspmx.l.google.com2015-07-16 → 2026-08-03 · 2 obs

● 2015-07-16 01:47:30
● 2026-08-03 10:25:00

●MXaspmx.l.google.com2015-07-16 → 2026-08-03 · 2 obs

● 2015-07-16 01:47:30
● 2026-08-03 10:25:00

●A104.18.41.892026-02-16 → 2026-08-03 · 3 obs

○ 2018-05-25 12:12:40
● 2026-02-16 06:18:48
● 2026-08-03 10:25:00

○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
○ 2026-08-03 10:25:00

○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
○ 2026-08-03 10:25:00

●A172.64.146.1672026-02-16 → 2026-08-03 · 3 obs

○ 2018-05-25 12:12:40
● 2026-02-16 06:18:48
● 2026-08-03 10:25:00

○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
○ 2026-08-03 10:25:00

○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
○ 2026-08-03 10:25:00

○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
○ 2026-08-03 10:25:00

○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
○ 2026-08-03 10:25:00

○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
○ 2026-08-03 10:25:00

○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
○ 2026-08-03 10:25:00

○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
○ 2026-08-03 10:25:00

○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
○ 2026-08-03 10:25:00

○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
○ 2026-08-03 10:25:00

○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
○ 2026-08-03 10:25:00

●A2606:4700:4403::6812:29592026-06-29 → 2026-08-03 · 3 obs

○ 2026-02-16 06:18:48
● 2026-06-29 22:32:28
● 2026-08-03 10:25:00

○A2606:4700:4404::6812:29592026-02-16 → 2026-02-16 · 4 obs

○ 2018-05-25 12:12:40
● 2026-02-16 06:18:48
○ 2026-06-29 22:32:28
○ 2026-08-03 10:25:00

●A2a06:98c1:3105::ac40:92a72026-06-29 → 2026-08-03 · 3 obs

○ 2026-02-16 06:18:48
● 2026-06-29 22:32:28
● 2026-08-03 10:25:00

○A2a06:98c1:310d::ac40:92a72026-02-16 → 2026-02-16 · 4 obs

○ 2018-05-25 12:12:40
● 2026-02-16 06:18:48
○ 2026-06-29 22:32:28
○ 2026-08-03 10:25:00

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	f.gtld-servers.net, h.gtld-servers.net, i.gtld-servers.net, d.gtld-servers.net...	-
gitbook.com	hugh.ns.cloudflare.com, dahlia.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.193.117

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: 238ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.64.146.167, 104.18.41.89`
AAAA	2	`2a06:98c1:3105::ac40:92a7, 2606:4700:4403::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	11	`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, segment-api.gitbook.com and app.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, 2606:4700:4403::6812:2959 and 2a06:98c1:3105::ac40:92a7.

Among the host names that share IP numbers with gitbook.com are channels.gitbook.com, segment-box.com, gblobscdn.gitbook.com 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, worldwidedestinationguide.biz and two more.

These name servers tend to be used in conjunction with the name servers sullivan.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: 142.250.31.26 and 2607:f8b0:4004:c07::1b.

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

alt2.aspmx.l.google.com has two IP addresses: 172.253.116.27 and 2a00:1450:400b:c02::1b.

alt3.aspmx.l.google.com has two IP addresses: 192.178.223.26 and 2a00:1450:4009:c0f::1b.

alt4.aspmx.l.google.com has two IP addresses: 172.253.157.27 and 2a00:1450:400c:c23::1b.