gitbook.io - dns.ninja

`gitbook.io`

DNSSEC	⚠️ Not signed
A	2606:4700:4401::ac40:93d1^{🇺🇸 Cloudflare2606:4700:4401::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2a06:98c1:310d::6812:282f^{🇺🇸 Cloudflare2a06:98c1:310d::/48} ✓ In HTTPS hints
A	104.18.40.47^{Cloudflare104.18.40.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.64.147.209^{🇺🇸 Cloudflare172.64.147.0/24 , 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:c17::1a^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`bl-in-f26.1e100.net`
		A	192.178.155.27^{🇺🇸 Google192.178.155.0/24}
			PTR	`yuiadrs-in-f27.1e100.net`
MX	`alt1.aspmx.l.google.com`⁽²⁰⁾
		A	2800:3f0:4003:c0f::1a^{🇨🇱 Google2800:3f0:4003::/48}
		A	108.177.123.27^{🇺🇸 Google108.177.123.0/24}
			PTR	`lcscld-in-f27.1e100.net`
MX	`alt2.aspmx.l.google.com`⁽²⁰⁾
		A	2a00:1450:400b:c02::1a^{🇮🇪 Google2a00:1450:400b::/48}
			PTR	`dj-in-f26.1e100.net`
		A	172.253.116.26^{🇺🇸 Google172.253.116.0/24}
			PTR	`dj-in-f26.1e100.net`
MX	`aspmx2.googlemail.com`⁽³⁰⁾
		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	`aspmx3.googlemail.com`⁽³⁰⁾
		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`
TXT	`8277640`
TXT	`8lncom12tnn1so22eu2gvaoe9q`
TXT	`google-site-verification=9HmRew5KGY83Wzed-UhP71FdHHbV3qoUKP5h_Jenjeo`
TXT	`google-site-verification=jOO29_Act4pfhfArsLE_txCdET-NuQQyqp1aAG5-H8s`
TXT	`google-site-verification=mAI4k7A4RaCrAbrsgv7m8w6VPx0irEHUO3bHYEPPwdI`
TXT	`openai-domain-verification=dv-5coTbUFl8eIUWr3rQkpd9lw2`
TXT	`v=spf1 a mx include:_spf.google.com include:sendgrid.net include:stspg-custom...`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.18.40.47, 172.64.147.209
		IPv6 hints	2606:4700:4401::ac40:93d1, 2a06:98c1:310d::6812:282f
SOA	`dahlia.ns.cloudflare.com`dns@cloudflare.com serial=2406651386

`io`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a0.nic.io` ⭐
	NS	`a2.nic.io`
	NS	`b0.nic.io`
	NS	`c0.nic.io`
	SOA	`a0.nic.io`hostmaster@donuts.email serial=1783967079

rank #1038 globally
rank #9 in the tld

gitbook.io

gitbook.iois the hosted-documentation subdomain platform operated by GitBook Inc., where teams and developers publish their GitBook documentation spaces publicly on the web.

Key facts

Owner / operator: GitBook Inc.
TLD:.io— ccTLD for British Indian Ocean Territory; widely adopted by tech companies as a de-facto gTLD
Primary purpose: Subdomain-based hosting for user and organization documentation spaces created on the GitBook platform
Status: Active

Notable subdomains or services

GitBook usesgitbook.ioto serve public documentation for any workspace or organization. The subdomain pattern is:

.gitbook.io/— publicly published documentation space belonging to a GitBook organization or user account

The service is analogous to*.github.iofor GitHub Pages: GitBook hosts the content; the reader-facing URL is ongitbook.iorather than on the customer's own domain (unless a custom domain is configured).

Related domains

gitbook.com— main corporate website, login, and workspace dashboard (the canonical home of the product)

WOT: SAFE (68/100)
📈 Tranco rank: #3,298

Subdomains

conbesapprrlogn.gitbook.io

metamaskllloggin.gitbook.io

metemmesk-wallet.gitbook.io

wlletmetamsck.gitbook.io

docs---ap-walletconnectt.gitbook.io

supporthelp-metamsk.gitbook.io

kookon-lgiin.gitbook.io

ceobessaprologinn.gitbook.io

wlltcoinbslogin-us.gitbook.io

walletmataimmask.gitbook.io

coinbaeewprlogin.gitbook.io

ramramram.gitbook.io

ytload.gitbook.io

uphooeldlogin.gitbook.io

gemini-lxiogin.gitbook.io

help-metasmexchrom.gitbook.io

netamsklogini.gitbook.io

ledgerlivllet.gitbook.io

start---walletconnect.gitbook.io

coin-pro-baseop.gitbook.io

help-metmaskchrm.gitbook.io

metama(0x736578)tension-support.gitbook.io

krkenlogon.gitbook.io

logina-trezor.gitbook.io

metaaskewlogin.gitbook.io

metamalkiogin.gitbook.io

help-wall-ledg.gitbook.io

zimrinilog.gitbook.io

mattemaskk-lognn.gitbook.io

metmkenlogiiv.gitbook.io

maskneta-logiin.gitbook.io

wallet-web3-metamask.gitbook.io

kraikenzlogimus.gitbook.io

matemas-kwalllit.gitbook.io

sso-metasmask-exten.gitbook.io

film-complet-en-streaming-3.gitbook.io

metiamusckzlogon.gitbook.io

robinhooldloegins.gitbook.io

rubeinhoodloigeni.gitbook.io

memasktlogi.gitbook.io

wllettconeecct.gitbook.io

phntimwalle.gitbook.io

upholdnxlogin.gitbook.io

metumaskalogin.gitbook.io

metvamask-wvallnet.gitbook.io

help-ledgers-helps.gitbook.io

httpskgminer.gitbook.io

phantiomwallett.gitbook.io

bill-wisehardware-com-1.gitbook.io

appsupport-metamsk.gitbook.io

getstart--walletconnect.gitbook.io

robxhoodlougin.gitbook.io

ndaaeixcoins--a.gitbook.io

kiucouenlogex.gitbook.io

trezzoerwallet.gitbook.io

metiamsk-logiin.gitbook.io

uuelodlin.gitbook.io

mootasmasklugin.gitbook.io

metaskk--connnect.gitbook.io

matamsklogin.gitbook.io

coinbsaeppowrologin.gitbook.io

robnhinhoxdlogin.gitbook.io

matimesk-logio.gitbook.io

mateimasik-login.gitbook.io

connectwaallett.gitbook.io

coin-basepro-login.gitbook.io

mintamask-wallet.gitbook.io

connectwaallettes.gitbook.io

kubbaseprelogin.gitbook.io

docs----waletconnect.gitbook.io

gemnixilogisx.gitbook.io

kuqoinlogieus.gitbook.io

conisbasperlogin.gitbook.io

mitaamask-wallett.gitbook.io

my-robinhoodaccount.gitbook.io

sopport-s--metamask.gitbook.io

doos-brdge-trizr.gitbook.io

filmfree.gitbook.io

conisbiseprologan-1.gitbook.io

mestakasklogyn.gitbook.io

robinhoodlogiins.gitbook.io

ribenhoedlogin.gitbook.io

rrobinihoodlugin.gitbook.io

sso-metamaskchrome.gitbook.io

cbaseproslogeu.gitbook.io

geminiuoilogin-1.gitbook.io

mumtamskilogin.gitbook.io

crypto-auth-link.gitbook.io

coinbaasggnin.gitbook.io

metamisksignnin.gitbook.io

cubasepreologgnn.gitbook.io

krukennlogiien.gitbook.io

pracuinbasecol.gitbook.io

connectmewallet.gitbook.io

waalletconectt.gitbook.io

wallleconnects.gitbook.io

coinbsseprologix.gitbook.io

gemi-nilogin.gitbook.io

help-metiumsk-pages.gitbook.io

metaimsskelogin.gitbook.io

Same first word

gitbook.com

gitbook.space

gitbook.io

gitbook.site

gitbook.me

gitbook.cn

gitbook.org

gitbook.net

gitbook.ai

gitbook.wtf

Similar names

bookitg.com

tgibook.com

DNS History

22 records (11 active, 11 former)

●NSdahlia.ns.cloudflare.com2017-05-25 → 2026-07-13 · 3 obs

○ 2016-03-23 09:40:36
● 2017-05-25 13:59:54
● 2026-07-13 18:45:12

●NShugh.ns.cloudflare.com2017-05-25 → 2026-07-13 · 3 obs

○ 2016-03-23 09:40:36
● 2017-05-25 13:59:54
● 2026-07-13 18:45:12

○NSns1.iwantmyname.net2015-08-08 → 2016-03-23 · 4 obs

● 2015-08-08 08:12:44
● 2016-03-23 09:40:36
○ 2017-05-25 13:59:54
○ 2026-07-13 18:45:12

○NSns2.iwantmyname.net2015-08-08 → 2016-03-23 · 4 obs

● 2015-08-08 08:12:44
● 2016-03-23 09:40:36
○ 2017-05-25 13:59:54
○ 2026-07-13 18:45:12

○NSns3.iwantmyname.net2015-08-08 → 2016-03-23 · 4 obs

● 2015-08-08 08:12:44
● 2016-03-23 09:40:36
○ 2017-05-25 13:59:54
○ 2026-07-13 18:45:12

○NSns4.iwantmyname.net2015-08-08 → 2016-03-23 · 4 obs

● 2015-08-08 08:12:44
● 2016-03-23 09:40:36
○ 2017-05-25 13:59:54
○ 2026-07-13 18:45:12

●MXalt1.aspmx.l.google.com2015-08-08 → 2026-07-13 · 5 obs

● 2015-08-08 08:12:44
● 2026-06-05 18:41:16
○ 2026-06-06 01:13:18
● 2026-06-06 06:38:00
● 2026-07-13 18:45:12

●MXalt2.aspmx.l.google.com2015-08-08 → 2026-07-13 · 5 obs

● 2015-08-08 08:12:44
● 2026-06-05 18:41:16
○ 2026-06-06 01:13:18
● 2026-06-06 06:38:00
● 2026-07-13 18:45:12

●MXaspmx.l.google.com2015-08-08 → 2026-07-13 · 5 obs

● 2015-08-08 08:12:44
● 2026-06-05 18:41:16
○ 2026-06-06 01:13:18
● 2026-06-06 06:38:00
● 2026-07-13 18:45:12

●MXaspmx2.googlemail.com2015-08-08 → 2026-07-13 · 5 obs

● 2015-08-08 08:12:44
● 2026-06-05 18:41:16
○ 2026-06-06 01:13:18
● 2026-06-06 06:38:00
● 2026-07-13 18:45:12

●MXaspmx3.googlemail.com2015-08-08 → 2026-07-13 · 5 obs

● 2015-08-08 08:12:44
● 2026-06-05 18:41:16
○ 2026-06-06 01:13:18
● 2026-06-06 06:38:00
● 2026-07-13 18:45:12

●A104.18.40.472026-02-14 → 2026-07-13 · 6 obs

○ 2017-05-25 13:59:54
● 2026-02-14 17:25:38
● 2026-06-05 18:41:16
○ 2026-06-06 01:13:18
● 2026-06-06 06:38:00
● 2026-07-13 18:45:12

○A104.25.212.202017-05-25 → 2017-05-25 · 4 obs

○ 2016-03-23 09:40:36
● 2017-05-25 13:59:54
○ 2026-02-14 17:25:38
○ 2026-07-13 18:45:12

○A104.25.213.202017-05-25 → 2017-05-25 · 4 obs

○ 2016-03-23 09:40:36
● 2017-05-25 13:59:54
○ 2026-02-14 17:25:38
○ 2026-07-13 18:45:12

●A172.64.147.2092026-02-14 → 2026-07-13 · 6 obs

○ 2017-05-25 13:59:54
● 2026-02-14 17:25:38
● 2026-06-05 18:41:16
○ 2026-06-06 01:13:18
● 2026-06-06 06:38:00
● 2026-07-13 18:45:12

○A2400:cb00:2048:1::6819:d4142017-05-25 → 2017-05-25 · 4 obs

○ 2016-03-23 09:40:36
● 2017-05-25 13:59:54
○ 2026-02-14 17:25:38
○ 2026-07-13 18:45:12

○A2400:cb00:2048:1::6819:d5142017-05-25 → 2017-05-25 · 4 obs

○ 2016-03-23 09:40:36
● 2017-05-25 13:59:54
○ 2026-02-14 17:25:38
○ 2026-07-13 18:45:12

●A2606:4700:4401::ac40:93d12026-07-08 → 2026-07-13 · 3 obs

○ 2026-06-06 06:38:00
● 2026-07-08 16:12:52
● 2026-07-13 18:45:12

○A2606:4700:4402::ac40:93d12026-02-14 → 2026-06-06 · 7 obs

○ 2017-05-25 13:59:54
● 2026-02-14 17:25:38
● 2026-06-05 18:41:16
○ 2026-06-06 01:13:18
● 2026-06-06 06:38:00
○ 2026-07-08 16:12:52
○ 2026-07-13 18:45:12

○A2606:4700:4407::6812:282f2026-02-14 → 2026-06-06 · 7 obs

○ 2017-05-25 13:59:54
● 2026-02-14 17:25:38
● 2026-06-05 18:41:16
○ 2026-06-06 01:13:18
● 2026-06-06 06:38:00
○ 2026-07-08 16:12:52
○ 2026-07-13 18:45:12

●A2a06:98c1:310d::6812:282f2026-07-08 → 2026-07-13 · 3 obs

○ 2026-06-06 06:38:00
● 2026-07-08 16:12:52
● 2026-07-13 18:45:12

○A62.116.130.82015-08-08 → 2016-03-23 · 4 obs

● 2015-08-08 08:12:44
● 2016-03-23 09:40:36
○ 2017-05-25 13:59:54
○ 2026-07-13 18:45:12

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
io	c0.nic.io, a2.nic.io, a0.nic.io, b0.nic.io	-
gitbook.io	hugh.ns.cloudflare.com, dahlia.ns.cloudflare.com	-

✅ Authoritative Response

Server:173.245.58.89

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for gitbook.io (unsigned zone)

⏱️ Timing

Total: 391ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.64.147.209, 104.18.40.47`
AAAA	2	`2606:4700:4401::ac40:93d1, 2a06:98c1:310d::6812:282f`
NS	2	`dahlia.ns.cloudflare.com, hugh.ns.cloudflare.com`
MX	5	`aspmx.l.google.com (pri: 10), alt1.aspmx.l.google.com (pri: 20)...`
TXT	7	`8277640, 8lncom12tnn1so22eu2gvaoe9q...`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`dahlia.ns.cloudflare.com dns.cloudflare.`

Analysis

Hierarchy

The parent domain gitbook.io covers conbesapprrlogn.gitbook.io, metamaskllloggin.gitbook.io, metemmesk-wallet.gitbook.io, wlletmetamsck.gitbook.io, docs---ap-walletconnectt.gitbook.io and several thousand other host names.

IP Addresses

gitbook.io resolves to four IP addresses: 104.18.40.47, 172.64.147.209, 2606:4700:4401::ac40:93d1 and 2a06:98c1:310d::6812:282f.

Two other host names, along with 0xffff.com, robinhod-logix.gitbook.io and kuakinlogni.gitbook.io, also share IP numbers with gitbook.io.

Name Servers

Two name servers handle the delegation for gitbook.io: dahlia.ns.cloudflare.com and hugh.ns.cloudflare.com.

gitbook.io shares its NS records with other domains, for example vea(0x706f726e)o.com, rishi.ca, app2china.com and two others.

gitbook.io shares at least some of its name servers with other domains, including radiantwoodstay.life, guidespdf.com, dursoboutique.com and two others.

These name servers are frequently paired with the name servers sullivan.ns.cloudflare.com and chan.ns.cloudflare.com.

DNS names with 6 IP addresses:

dahlia.ns.cloudflare.com resolves to 108.162.192.89, 172.64.32.89 and 173.245.58.89 among others, with 3 other IP addresses in total.

hugh.ns.cloudflare.com resolves to 108.162.193.117, 172.64.33.117 and 173.245.59.117 among others, with 3 other IP addresses in total.

Mail Servers

gitbook.io is handled by five mail servers: aspmx2.googlemail.com, aspmx3.googlemail.com, aspmx.l.google.com and two others.

There is at least a partial MX overlap between gitbook.io and other domains, including ns500671.ns500731.ns500742.ns500754.ns500731.ns500742.ns500671.ns500705.ns500705.ns500666.lustychickser.com, ns500758.ns500759.ns500758.ns500698.ns500735.ns500735.ns500576.ns500576.ns500698.ns500576.ns500652.ns500576.trackreceptor.com, ns500731.ns500671.ns500671.ns500731.ns500704.ns500731.ns500705.ns500678.ns500688.ns500131.lustychickser.com and two others.

These mail servers tend to appear in combination with mail servers alt1.aspmx.l.google.com, alt2.aspmx.l.google.com, alt3.aspmx.l.google.com and 3 others.

Host names that have two IP addresses:

aspmx2.googlemail.com resolves to two addresses: 108.177.123.26 and 2800:3f0:4003:c0f::1b.

aspmx3.googlemail.com resolves to two addresses: 172.253.116.26 and 2a00:1450:400b:c02::1b.

aspmx.l.google.com resolves to two addresses: 192.178.155.27 and 2607:f8b0:4004:c17::1a.

alt1.aspmx.l.google.com resolves to two addresses: 108.177.123.27 and 2800:3f0:4003:c0f::1a.

alt2.aspmx.l.google.com resolves to two addresses: 172.253.116.26 and 2a00:1450:400b:c02::1a.

aspmx3.googlemail.com along with alt2.aspmx.l.google.com each resolve to 172.253.116.26 IP addresses.