API requests are limited to one every two seconds.
Automations that send requests more frequently can receive a 429 response and need to control their request rate.
Evidence source ↗
DNSDumpster
DNSDumpster is a web-based reconnaissance service for finding domain-related hosts, DNS records, network details, and service banners. It also offers API access and a restricted offline dataset option.
Editorial overview
Aggregated Overview
Official documentation verifies DNS and infrastructure lookups, banner searches, API access, and tier limits. Public review evidence and independently verified support or performance data were not found, so those scores reflect limited evidence rather than user ratings.
This profile combines documented product information and independent evidence where available. It is not a hands-on test unless TechZella explicitly identifies one.
DNSDumpster Decision Snapshot
A quick way to understand who this product may suit, where its limits matter, and which facts are most relevant before you compare alternatives.
Best suited to
Security practitioners and network defenders who need an initial, browser-based view of a domain’s publicly visible DNS and related infrastructure.
Look elsewhere if
Teams needing broad web scraping, large-scale automated collection, or unrestricted historical DNS research; DNSDumpster is focused on infrastructure reconnaissance and applies request, result, and API rate limits, and should evaluate alternatives such as OWASP Amass or SecurityTrails instead.
Platforms
API, Self-hosted, Web
TechZella assessment
6.7/10
Overview
DNSDumpster is a HackerTarget project for domain and network reconnaissance. It helps security practitioners identify publicly visible hosts, DNS records, and related infrastructure. Despite the requested Web Scraping category, the documented product is a cybersecurity reconnaissance service, not a general-purpose web scraper.
Searches can start with a domain or an IP range in CIDR notation. The service draws on certificate transparency logs, search engines, and Common Crawl for subdomain discovery. Results can support an initial assessment, but the service’s documented membership and API limits matter for larger workloads.
DNSDumpster — What Sets It Apart?
These are the product-specific differences that may matter when deciding whether the software fits your workflow. They are based on documented evidence rather than a universal ranking.
- Combines domain-based DNS and host discovery with CIDR-based service-banner searches.
- Its API can return DNS records, network ownership, netblocks, and banner data as JSON.
- An offline dataset option is offered for certain government and approved corporate customers.
5 key claims verifiedOur editorial team checked this profile against vendor documentation, product documentation, pricing information. Supported by 4 documented sources.
DNSDumpster Pros & Cons
Pros
- Provides domain and CIDR-based reconnaissance in one service.
- Offers a free account with API access to records.
- Publishes API and membership limits in its documentation.
Cons
- Daily request and result limits constrain larger lookups.
- API rate limit may slow automated collection.
- Its focus is DNS and network reconnaissance, not broad web scraping.
DNSDumpster Gotchas & Operational Limits
These are documented constraints or practical friction points that may matter before you adopt the product.
Free and Plus API searches have different result caps, and additional API pages require Plus.
A large domain’s results may be incomplete on a free account or require a paid membership for pagination.
Evidence source ↗Security & Privacy
For security-sensitive software, TechZella focuses on documented architecture, authentication, data handling, deployment and privacy details that can affect a buying decision. This is product research, not an independent security audit.
Security posture at a glance
| API authentication | API key |
|---|---|
| Offline deployment | Self-contained virtual machine option; availability restricted to government and approved corporate customers |
Security claims are presented only when supported by documented sources. The presence of this section does not constitute a penetration test, certification or independent security audit.
DNSDumpster Pricing & Plans
Basic
$0
month
Free account with 50 requests per day, up to 50 subdomains per request, 32 CIDR search results, and API access to records.
Check current pricing →Plus
$49
year
Membership page shows $49 per year as a limited-time price, with $79 per year struck through. Includes 200 daily requests and up to 200 subdomains per request.
Check current pricing →Max
$499
year
Membership page lists 2,500 daily requests and up to 200 subdomains per page.
Check current pricing →Pricing may change. Verify current plans on the vendor's website.
DNSDumpster Competitors & Alternatives
Compare similar products directly, then see which alternatives may make more sense when your requirements differ.
Direct competitors
These products address broadly similar requirements. The descriptions focus on documented reasons a buyer might compare them with DNSDumpster.
DNSDumpster Features
Domain and network reconnaissance
- Domain searches for subdomains, DNS records, and associated infrastructure
- CIDR-based service-banner search
- API results can include DNS records, ASN ownership, netblocks, and banner data
API and access
- API key authentication
- JSON response format
- Pagination for additional host records with Plus membership
- API rate limit of one request every two seconds
Deployment
- Browser-based web service
- DNSDumpster Unplugged virtual-machine option for eligible restricted-network customers
Demo & Screenshots
DNSDumpster Specifications
| Product type | Domain and network reconnaissance service |
|---|---|
| Access | Web and API |
| API format | JSON |
| API authentication | API key |
| API rate limit | One request per two seconds |
| Free account limit | 50 requests per day; 50 subdomains per request |
| Offline deployment | Self-contained virtual machine option; availability restricted to government and approved corporate customers |
Deployment & System Footprint
Verified installation, hosting, administration, or environment details that can affect implementation.
| Hosted service | Domain research is available through the DNSDumpster website and API. Source ↗ |
|---|---|
| Restricted-network option | DNSDumpster Unplugged is offered as a self-contained virtual machine with periodically refreshed datasets; availability is limited to government and approved corporate customers. Source ↗ |
Our evidence-based assessment
TechZella Score
A proprietary editorial score based on product capabilities, usability, value, performance, support and user sentiment evidence.
6.7/10Low confidence
Official documentation verifies DNS and infrastructure lookups, banner searches, API access, and tier limits. Public review evidence and independently verified support or performance data were not found, so those scores reflect limited evidence rather than user ratings.
Methodology v1.0. The assessment weighs feature coverage (25%), ease of use (15%), value for money (20%), performance (15%), support (10%) and user sentiment (15%), using researched product evidence and verified review evidence where available. It is a TechZella editorial assessment, not a direct user-review average.
Editorial transparency
Our Review Methodology
Key claims are linked to the sources used to verify them. This evidence record is separate from third-party user ratings.
TechZella evaluates software using documented product capabilities, pricing information, usability and value considerations, independent user evidence where available, and competitive context. The assessment is an editorial review, not a hands-on test unless one is explicitly identified. Our editorial assessment is based on 4 documented sources.
What TechZella adds
- Combines domain-based DNS and host discovery with CIDR-based service-banner searches.
- Its API can return DNS records, network ownership, netblocks, and banner data as JSON.
- An offline dataset option is offered for certain government and approved corporate customers.
Important limitations
- Free and paid memberships have daily request and per-query result limits.
- The API is limited to one request every two seconds.
- The offline dataset option is restricted to government and approved corporate customers.
Evidence-backed claimsDNSDumpster supports domain-based reconnaissance and IP-network banner searches. The API returns DNS and attack-surface information as JSON. The basic membership includes 50 daily requests and API access to records. The service uses certificate transparency logs, search engines, and Common Crawl among its subdomain discovery sources. The product is a HackerTarget project and the membership page gives 2011 as its establishment year.
The FAQ describes searching domains for subdomains, DNS records, and related infrastructure, and searching CIDR ranges for service banners.
View source ↗Verified 2026-10-08The developer page documents a domain endpoint, API-key authentication, and JSON response data including DNS records and network details.
View source ↗Verified 2026-10-08The membership page lists the Basic tier’s daily request limit, per-request subdomain cap, CIDR result cap, and API access.
View source ↗Verified 2026-10-08The FAQ identifies these data sources as inputs used to identify subdomains.
View source ↗Verified 2026-10-08The homepage identifies DNSDumpster as a HackerTarget project; its membership page lists “2011” under “Established.”
View source ↗Verified 2026-10-08Community feedback
Reviews
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FAQ
Does DNSDumpster have an API? Yes. The API uses an API key and returns JSON. The developer documentation specifies a one-request-per-two-seconds rate limit.
Is there a free trial? DNSDumpster lists a free Basic account rather than a separate time-limited trial. Its listed Basic tier includes API access with daily and result caps.
Does it support integrations? The documented integration method is its API, which users can connect to their own tools and workflows. No prebuilt third-party integration catalog was verified.
Is DNSDumpster a web-scraping tool? Its documented purpose is domain and network reconnaissance. The product is not presented as a general-purpose web-scraping platform.
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