NEWMonitoreo de dominios desde $29 al mes
Everycheckyourdomainneeds.Onecalmplace.
DNS, email deliverability, SSL, blacklist checks and more. Simple tools for a healthier, more reliable online presence.
Prueba
Built with & supports
Cloudflare PagesCloudflare WorkersCloudflare D1
Astro
ReactDNS over HTTPSAAAAAMXTXTNSSOACAASPFDNS lookup
See your DNS records, clearly.
Check A, AAAA, MX, TXT and more in seconds.
Try DNS LookupDNS records
LIVE PREVIEW- A104.21.48.1
- MXmail.example.com
- TXTv=spf1 include:_spf...
Blacklist check
Make sure you’re not on a blacklist.
Check 7 major blocklists in seconds and protect your reputation.
Try Blacklist checkBlacklist
LIVE PREVIEW- Listed on0 of 7 lists
- CheckSpamhaus, Barracuda...
- ResultClean / Not Listed
SSL
See the bigger picture.
Check the certificate chain, expiry and protocol support.
Try SSL checkerCertificate
LIVE PREVIEW- ChainValid (2 certs)
- Expiry64 days left
- ProtocolsTLS 1.3
Email deliverability
Stronger email deliverability starts here.
Check SPF, DKIM and DMARC, find what is broken and fix it before mail lands in spam.
Check your domainLIVE PREVIEW
Simple, transparent pricing
Tools for everyone.
More power as you grow.
Free
$0
- + All 39 tools, unlimited checks
- + 3 saved domains, daily monitoring
- + 7 days of history
Pro · Popular
$29/month
- + 50 domains, scans every 6 hours or every monitor run
- + Email, Slack, Telegram and webhook alerts
- + 12 months of history and API access
See full pricing and plan comparison →
FREQUENTLY ASKED QUESTIONS
What tools are included?
39 tools: Infrastructure, Domain & Email, Generators (New), Security & Web, Local Utilities.
How accurate are the blacklist checks?
The check queries 7 public DNS blocklists and every result shows its source and what was not tested.
Can I monitor my domain over time?
Yes. The free plan saves 3 domains with daily monitoring. The paid plan covers 50 domains with alerts.
Do I need an account to use the tools?
No. You can run checks without signing in. A free account is for saving domains and monitoring.
Introduction
The Network Tools is a browser‑based suite of utilities for developers, system administrators, and security researchers. It provides straightforward, functional tools for investigating DNS records, IP addresses, email deliverability, and basic network configurations.
- Unified Interface – Access essential lookups from a single dashboard.
- Client-Side and Server-Side execution – Tools run efficiently through your browser or backend APIs.
- Accurate Core Metrics – Reliable responses for DNS, IP, and SSL lookups.
Core Features
1. DNS & Domain Utilities
| Tool | Primary Use‑Case | Typical Output |
|---|---|---|
| DNS Lookup | Resolve standard DNS records (A, AAAA, MX, TXT, NS, CNAME) | Human‑readable list of DNS records |
| Reverse DNS (PTR) | Check IP to hostname resolution | Associated hostname or failure notice |
| WHOIS Lookup | Query domain registration details | Formatted domain WHOIS response |
Why it matters:
- Verifying DNS records is the first step in troubleshooting email deliverability and website connectivity issues.
2. Email & Security Utilities
| Tool | What It Checks | Result Highlights |
|---|---|---|
| DMARC Analyzer | Basic DMARC record syntax and presence | Record string and policy tag |
| Mail Tester | Temporary inbox for test emails | Email receipt status and custom diagnostic analysis |
| Blacklist Checker | Queries a select group of major DNSBL zones | Listed status (Yes/No) across checked zones |
| BIMI Lookup | Queries BIMI TXT records | Extracts logo URL or certificate URL |
Why it matters:
- Validating basic email authentication configurations like DMARC helps in setting up deliverability infrastructure.
3. IP & Network Diagnostics
| Tool | Function | Output Format |
|---|---|---|
| IP Lookup | General IP information | ASN, basic location data |
| Port Checker | Tests common HTTP/HTTPS ports | Connection success or failure |
Why it matters:
- Quickly checking external IP details and verifying if standard web ports are responding is crucial for initial network triage.
4. Web Diagnostics
| Tool | Primary Benefit | Output Format |
|---|---|---|
| SSL/TLS Checker | Checks basic SSL certificate validity | Expiration date, issuer, and validity status |
Frequently Asked Questions (FAQ)
| # | Question | Short Answer |
|---|---|---|
| 1 | What is The Network Tools? | A collection of web-based utilities to help users troubleshoot and verify DNS, IP, email, and SSL configurations. |
| 2 | How does the Blacklist Checker work? | It performs a DNS lookup against a predefined set of DNSBL (Domain Name System Blackhole List) zones. Note that this covers specific IPv4 lists, and passing these checks does not guarantee your IP is clean on all global blocklists. |
| 3 | Does the Mail Tester use SpamAssassin? | No, the Mail Tester provides a custom diagnostic score and analysis of the received test email based on basic headers and delivery status. |
| 4 | What does the Port Checker actually test? | It performs basic connectivity probes primarily aimed at common web ports like 80 (HTTP) and 443 (HTTPS). Unprobed ports are considered untested. |
| 5 | Are the results logged? | Queries are executed to provide immediate results. Please refer to our privacy policy for detailed data handling practices. |
Glossary of Common Network Terms
| Term | Definition |
|---|---|
| DNS (Domain Name System) | Hierarchical system translating domain names to IP addresses. |
| IP (Internet Protocol) Address | Numeric identifier assigned to a network device. |
| ASN (Autonomous System Number) | Identifier for a network operator or ISP. |
| WHOIS | Protocol for querying domain registration data. |
| DMARC | Email authentication protocol that uses SPF and DKIM. |
| SPF (Sender Policy Framework) | DNS record specifying authorized mail-sending IPs. |
| DKIM (DomainKeys Identified Mail) | Cryptographic signature verifying email integrity. |
| SSL/TLS | Cryptographic protocols that secure data in transit (e.g., HTTPS). |
| CNAME | DNS record that aliases one domain name to another. |
| MX (Mail Exchange Record) | DNS record specifying mail servers responsible for receiving email. |
| PTR (Pointer Record) | Reverse DNS record mapping an IP to a hostname. |