Domain
book.is
Aggregated from public BGP, CT logs, our scan layer, honeypots and global probes.
Run a live full scan of book.is
On-demand: ports, banners, TLS, tech-stack, subdomains and origin/IP-leak detection. Results are shared publicly for everyone to link to.
Hosting IPs
1
A/AAAA targets
Subdomains
1,263
CT + scan + body
Record Types
—
seen in DNS
Observed Certs
2
in our scans
DNS Records
A
—
AAAA
—
MX
—
NS
—
TXT
—
CNAME
—
CAA
—
WHOIS / Registration
Registration data planned
Registrar, creation/expiry dates and domain status via RDAP. Rolling out gradually — bulk WHOIS is rate-limited, so we resolve on a prioritized cadence.
Subdomains
Every subdomain we know about — harvested from CT-log SANs, scan-observed certs and HTML body references — paired with its current A/AAAA target.
| Subdomain | Resolves to | Last seen |
|---|---|---|
| 00.book.is | 2026-06-15 13:10:14.345 | |
| 00mg703gxrcuo956.book.is | 1970-01-01 00:00:00.000 | |
| 04788557e-frontier.book.is | 1970-01-01 00:00:00.000 | |
| 1-a.book.is | 1970-01-01 00:00:00.000 | |
| 1.book.is | 1970-01-01 00:00:00.000 | |
| 122.book.is | 2026-06-21 08:49:31.844 | |
| 24asc.book.is | 2026-06-22 17:39:17.058 | |
| 33b14a31c-frontier.book.is | 1970-01-01 00:00:00.000 | |
| 42.book.is | 2026-07-26 23:53:41.507 | |
| 4mcenci-bed-and-breakfast-fontana-di-trevi-it.book.is | 2026-06-21 02:52:06.865 | |
| 5.book.is | 2026-06-04 13:20:28.098 | |
| 7100p-lj4250.book.is | 1970-01-01 00:00:00.000 | |
| 77kids.book.is | 1970-01-01 00:00:00.000 | |
| 9809ds1.dfw2-apac.book.is | 1970-01-01 00:00:00.000 | |
| a.dev.book.is | 1970-01-01 00:00:00.000 | |
| abisdocker.book.is | 1970-01-01 00:00:00.000 | |
| account.book.is | 2026-08-01 05:46:37.432 | |
| accounts.book.is | 2026-08-01 05:46:37.432 | |
| accp.apps.book.is | 1970-01-01 00:00:00.000 | |
| acm-support.book.is | 2026-07-17 16:35:40.611 | |
| adcntrljbr01.book.is | 1970-01-01 00:00:00.000 | |
| admin.book.is | 2026-08-01 05:46:37.432 | |
| admin.jacksonvillefloridah.book.is | 1970-01-01 00:00:00.000 | |
| administrator.book.is | 2026-08-01 05:46:37.432 | |
| afi.book.is | 2026-06-18 03:56:05.376 | |
| agriturismo-serra-san-biagio-it.book.is | 2026-06-18 00:37:04.204 | |
| aimsmoodle.book.is | 1970-01-01 00:00:00.000 | |
| alertmanager.book.is | 2026-08-01 05:46:37.432 | |
| allegro.chicago.book.is | 1970-01-01 00:00:00.000 | |
| alpha.book.is | 2026-08-01 05:46:37.432 | |
| also.book.is | 1970-01-01 00:00:00.000 | |
| amazing.book.is | 2026-06-15 12:05:02.093 | |
| and.her.book.is | 1970-01-01 00:00:00.000 | |
| anedwstgfpcorporate.book.is | 2026-07-22 11:45:52.383 | |
| announcements.book.is | 1970-01-01 00:00:00.000 | |
| annualreport2015.book.is | 1970-01-01 00:00:00.000 | |
| annunci.book.is | 2026-07-22 04:10:37.294 | |
| apartament-olczanka-pl.book.is | 1970-01-01 00:00:00.000 | |
| apartamentos-astoria-benidorm-es.book.is | 1970-01-01 00:00:00.000 | |
| api-v1.book.is | 2026-08-01 05:46:37.432 | |
| api-v2.book.is | 2026-08-01 05:46:37.432 | |
| api.book.is | 2026-08-01 05:46:37.432 | |
| api1.book.is | 2026-08-01 05:46:37.432 | |
| api2.book.is | 2026-08-01 05:46:37.432 | |
| app.arafah-guest-house-id.book.is | 2026-06-17 02:10:46.575 | |
| app.book.is | 2026-08-01 05:46:37.432 | |
| apps-ch.compass.book.is | 1970-01-01 00:00:00.000 | |
| apps.book.is | 2026-08-01 05:46:37.432 | |
| aptmcaqhynwww.cikgscoast.book.is | 2026-06-18 02:29:24.119 | |
| aptosmw-sandbox.dope.book.is | 2026-07-16 03:10:13.562 | |
| archive.book.is | 2026-08-01 05:46:37.432 | |
| argocd.book.is | 2026-08-01 05:46:37.432 | |
| artifactory.book.is | 2026-08-01 05:46:37.432 | |
| artists.book.is | 2026-07-19 00:29:15.418 | |
| asc.book.is | 2026-07-28 06:32:03.443 | |
| assets.book.is | 2026-08-01 05:46:37.432 | |
| astoria-ro.book.is | 2026-06-21 02:16:10.046 | |
| atm1.book.is | 2026-07-18 19:38:18.481 | |
| atoz-crosstraining-app.integ.book.is | 1970-01-01 00:00:00.000 | |
| auth-i-pilot.book.is | 1970-01-01 00:00:00.000 | |
| auth.book.is | 2026-08-01 05:46:37.432 | |
| autoconfig.book.is | 2026-08-01 05:46:37.432 | |
| autodiscover.book.is | 2026-08-01 05:46:37.432 | |
| autodiscover.la-em-casa-bar-e-guest-house-br.book.is | 2026-07-17 10:35:32.134 | |
| avon.book.is | 1970-01-01 00:00:00.000 | |
| awkhjwww.2013.book.is | 1970-01-01 00:00:00.000 | |
| azure-eu-hdx.book.is | 1970-01-01 00:00:00.000 | |
| baan-nork-farmstay-th.book.is | 1970-01-01 00:00:00.000 | |
| backup.book.is | 2026-08-01 05:46:37.432 | |
| backups.book.is | 2026-08-01 05:46:37.432 | |
| balancer.book.is | 2026-08-01 05:46:37.432 | |
| bamboo.book.is | 2026-08-01 05:46:37.432 | |
| bandeirantes-br.book.is | 2026-06-22 04:23:17.744 | |
| bastion.book.is | 2026-08-01 05:46:37.432 | |
| bdpst-central-apartments-keleti-hu.book.is | 2026-07-22 21:08:41.701 | |
| bellsouthcentrexcontrol.book.is | 1970-01-01 00:00:00.000 | |
| beta.book.is | 2026-08-01 05:46:37.432 | |
| billing.book.is | 2026-08-01 05:46:37.432 | |
| bio.book.is | 2026-07-16 03:33:49.812 | |
| bitbucket.book.is | 2026-08-01 05:46:37.432 | |
| bizuteria-zegarki.listings.book.is | 2026-06-01 08:31:04.018 | |
| bjzsjhananoyadofukuya.book.is | 1970-01-01 00:00:00.000 | |
| black.book.is | 1970-01-01 00:00:00.000 | |
| blackfuturesfilm.book.is | 2026-06-17 20:33:09.202 | |
| blog.book.is | 2026-08-01 05:46:37.432 | |
| book.is | 1970-01-01 00:00:00.000 | |
| bounce.book.is | 2026-08-01 05:46:37.432 | |
| buero.shop.book.is | 2026-06-03 20:15:46.527 | |
| build.book.is | 2026-08-01 05:46:37.432 | |
| burgerhaus-monschau-de.book.is | 1970-01-01 00:00:00.000 | |
| buy.book.is | 2026-08-01 05:46:37.432 | |
| cache.book.is | 2026-08-01 05:46:37.432 | |
| cacti.book.is | 2026-08-01 05:46:37.432 | |
| canary.book.is | 2026-08-01 05:46:37.432 | |
| cart.book.is | 2026-08-01 05:46:37.432 | |
| carts-nuget-repository.book.is | 2026-07-15 01:38:58.411 | |
| casa-angebot-inte-int.api.book.is | 1970-01-01 00:00:00.000 | |
| cat.book.is | 2026-06-24 07:39:58.371 | |
| cavkknew.aws.book.is | 1970-01-01 00:00:00.000 | |
| cckxatest.dev.book.is | 1970-01-01 00:00:00.000 | |
| cd.book.is | 2026-08-01 05:46:37.432 | |
| cdn.book.is | 2026-08-01 05:46:37.432 | |
| chat.hostel-denal-ba.book.is | 2026-07-16 16:09:53.171 | |
| check.book.is | 2026-06-16 10:20:56.675 | |
| checkout.book.is | 2026-08-01 05:46:37.432 | |
| chicken.book.is | 2026-06-01 13:45:51.434 | |
| ci.book.is | 2026-08-01 05:46:37.432 | |
| circleci.book.is | 2026-08-01 05:46:37.432 | |
| ckrxowww.b.book.is | 2026-07-28 16:46:46.383 | |
| cloppenburg.book.is | 2026-06-19 00:44:11.069 | |
| cloud.corporativo.book.is | 2026-06-04 12:58:50.681 | |
| cloud.transactions.book.is | 2026-07-28 11:17:57.317 | |
| cms1.csuglab.book.is | 2026-07-26 22:14:49.183 | |
| cn-bz-co1.aisaac.book.is | 1970-01-01 00:00:00.000 | |
| cnoyjguk.book.is | 1970-01-01 00:00:00.000 | |
| cnxkeaddess.book.is | 2026-07-20 17:19:25.721 | |
| cnxkewww.addess.book.is | 1970-01-01 00:00:00.000 | |
| code.book.is | 1970-01-01 00:00:00.000 | |
| coffee.book.is | 2026-06-18 04:29:24.206 | |
| cokeplay.book.is | 2026-06-16 18:33:03.937 |
Tech Stack
Tech detection pending
Wappalyzer-rules detect CMS, frameworks, analytics, JS libs and server-side languages on this domain.
TLS Certificates
Certificate observations pending
TLS certs naming this domain in subject or SANs will appear here as our scan-layer catches them.
IPs Citing This Domain
No citing IPs found yet
As the world-sweep progresses, hosts referencing this domain in their HTML will surface here.
Origin / IP-Leak
USP
When a hostname is served behind a CDN (e.g. Cloudflare), the origin server can sometimes be identified by matching its TLS cert against the protected hostname. Findings shown here are heuristic candidates, not guarantees.
No origin-IP leaks detected (yet)
Either this domain doesn't sit behind a CDN, or we haven't seen a TLS cert from a non-CDN IP matching this hostname. Run a fullscan to refresh the cert→IP cross-reference.
Threat Intelligence
Domain threat-intel pending
Matches in URLhaus, OpenPhish, PhishTank, malware feeds, and Spamhaus DBL.
History
Domain timeline pending
Passive-DNS history accumulates as our forward-DNS crawler observes A/AAAA/MX/NS/TXT records over time.