Hostname
testbook.com
Last fetched
testbook.com resolves to 2 IPv4 addresses operated by CLOUDFLARENET - Cloudflare, Inc. in CA. WHOIS lists iana:625 as the registrar.
Nutrition Label
Resolution chain
testbook.com resolves to 2 distinct IPv4 addresses via WhisperGraph DNS data. Each row links to the IP, prefix, and announcing ASN.
| IP | Prefix | ASN | Operator | Country |
|---|---|---|---|---|
| 104.20.17.199 | 104.20.16.0/20 | AS13335 | CLOUDFLARENET - Cloudflare, Inc. | CA |
| 172.66.145.178 | 172.66.144.0/20 | AS13335 | CLOUDFLARENET - Cloudflare, Inc. | CA |
WHOIS identity
- Registrar
- iana:625
- Organization
- dns admin
- Contact emails
Subdomains
59 observed subdomains of testbook.com.
Showing 25 of 59. View all subdomains →
Web-graph footprint
Distinct hostnames that link to or from testbook.com in the public web crawl.
3,026 sites link to this hostname.
Sample inbound links
Threat posture
History
Mail and authentication
MX records
SPF policy
4 SPF mechanisms authorising senders for testbook.com.
| Mechanism | Target |
|---|---|
| SPF_INCLUDE | _spf.google.com |
| SPF_INCLUDE | _spf.mlsend.com |
| SPF_INCLUDE | amazonses.com |
| SPF_INCLUDE | smtp1.uservoice.com |
Related pages
Pivot deeper into the graph from testbook.com.
- IP · 104.20.17.199
- ASN · AS13335CLOUDFLARENET - Cloudflare, Inc.
- Registrar · iana:625
- Country · CA
- Email · testbook.com@protecteddomainservices.com
- TLD · .com
- Browse hostnames · te…
- Glossary · What is a hostname?
- Whisper Internet Directory — home
- Live MOAS conflicts feed
- Threat feed · Spamhaus DROP
- United States internet infrastructure
Cypher and MCP
Reproduce the resolution chain directly against graph.whisper.security:
MATCH (h:HOSTNAME {name: "testbook.com"})-[:RESOLVES_TO]->(ip:IPV4)
-[:ANNOUNCED_BY]->(ap:ANNOUNCED_PREFIX)
-[:ROUTES]->(asn:ASN)-[:HAS_NAME]->(n:ASN_NAME)
RETURN ip.name AS ip, ap.name AS prefix, asn.name AS asn, n.name AS operator
LIMIT 20Or query Whisper from your own LLM workflow via the Whisper MCP server.