Hostname
ctbook.cn
Last fetched
ctbook.cn resolves to 1 IPv4 address operated by TENCENT-NET-AP Shenzhen Tencent Computer Systems Company Limited in CN. WHOIS lists registrar:阿里云计算有限公司（万网） as the registrar.
Nutrition Label
Resolution chain
ctbook.cn resolves to 1 distinct IPv4 address via WhisperGraph DNS data. Each row links to the IP, prefix, and announcing ASN.
| IP | Prefix | ASN | Operator | Country |
|---|---|---|---|---|
| 121.4.8.2 | 121.4.8.0/21 | AS45090 | TENCENT-NET-AP Shenzhen Tencent Computer Systems Company Limited | CN |
WHOIS identity
- Registrar
- registrar:阿里云计算有限公司（万网）
- Organization
- 湖南陌上影视有限公司
- Contact emails
Subdomains
8 observed subdomains of ctbook.cn.
Web-graph footprint
Distinct hostnames that link to or from ctbook.cn in the public web crawl.
Sample inbound links
Threat posture
History
Mail and authentication
MX records
SPF policy
1 SPF mechanism authorising senders for ctbook.cn.
| Mechanism | Target |
|---|---|
| SPF_INCLUDE | spf.mail.qq.com |
Related pages
Pivot deeper into the graph from ctbook.cn.
- IP · 121.4.8.2
- ASN · AS45090TENCENT-NET-AP Shenzhen Tencent Computer Systems Company Limited
- Country · CN
- Email · liuxue@iiestar.com
- TLD · .cn
- Browse hostnames · ct…
- 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: "ctbook.cn"})-[: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.