Generator Labs: Blacklist and Certificate Monitoring for Email and Infrastructure Teams

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Generator Labs provides infrastructure monitoring for teams that need to stay ahead of two specific problems: IP and domain blacklistings that kill email deliverability, and SSL certificates that expire without warning. Both products run in the same portal, so you manage everything in one place.

Blacklist Monitoring

Blacklist monitoring runs continuous checks of your IPv4 addresses, IPv6 addresses, and domains against hundreds of RBL and URIBL data sources. The moment a listing is detected, alerts go out through whatever channels you have configured: email, SMS, Slack, Discord, PagerDuty, or webhooks.

Coverage is the differentiator. Free one-shot tools check a handful of the major lists. Generator Labs checks well over a hundred data sources on a schedule, including 30+ premium sources on Enterprise and Ultimate plans that free tools do not cover. You get notified when something changes; you are not logging in to run a manual check.

Other features worth knowing:

Full IPv6 support. IPv4 and IPv6 addresses are both monitored across all plans. As more mail infrastructure goes dual-stack, IPv6 blacklisting is a real and growing issue that most monitoring tools still treat as secondary.

Shareable public reports. Every monitored host gets a public report URL you can hand to a client, ISP, or manager without giving anyone portal access.

REST API. Full programmatic access to monitoring data and controls, with client libraries for PHP, Node.js, and Python.

Generator Labs RBL Monitoring hosts list

Blacklist Monitoring Pricing

  • Free: 1 host, 48-hour check interval, 100+ data sources. Free forever, no credit card required.
  • Professional: $8/month for 20 hosts at 24-hour intervals.
  • Enterprise: $16/month for 50 hosts at 12-hour intervals, premium data sources, custom run times.
  • Ultimate: $0.005 per check, unlimited hosts, custom intervals, all premium sources.

The Ultimate pay-per-check plan scales cleanly for larger deployments. Running 50 hosts daily against 150 data sources works out to roughly $11/month.

Certificate Monitoring

Certificate monitoring tracks SSL/TLS certificate expirations across your domains and sends alerts before anything expires. Add your domains, set alert thresholds, and the service runs automatically from there.

Both publicly-trusted and private or internal CA certificates are supported, which matters for teams running internal infrastructure that does not go through a public CA. Certificate expiry causes outages that are entirely preventable; automated monitoring removes the spreadsheet tracking and calendar reminders that most teams fall back on.

Generator Labs Certificate Monitoring monitors list

Monitoring profiles let you define reusable alert configurations across multiple monitors. Set custom expiration alert windows (5, 15, 30, 60 days, or any combination you need), choose which failure types trigger alerts, and assign private CAs or internal monitoring agents. One profile can cover dozens of monitors.

Generator Labs Certificate Monitoring add profile dialog

Certificate Monitoring Pricing

Certificate monitoring is priced at $0.01 per host per day, with no fixed tiers. You pay for what you monitor and can add or remove domains at any time.

Who It Is For

  • Email service providers and hosting companies monitoring large IP ranges
  • IT and security teams who need immediate notification when a host gets listed
  • Organizations managing many domains who need certificate expiry visibility without manual tracking
  • Developers who want API access to monitoring data for automation or integration

Get Started

Generator Labs offers continuous blacklist monitoring and certificate monitoring with solid alert coverage and a complete API. The free tier is a real free tier. Sign up at portal.generatorlabs.com to get started, no credit card required.

Net_DNS2 v1.5.0 – Version Bump (requires >= PHP 5.4)

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I’ve released version 1.5.0 of the Net_DNS2 library.

You can add it to your project using composer:

composer require pear/net_dns2

Or you can install it through the command line PEAR installer:

pear install Net_DNS2

Version 1.5.0

  • added the AMTRELAY resource record type (RFC 8777).
  • added Net_DNS2_RR::asArray(), which returns the same values as __toString(), but as an array for easier access.
  • added Net_DNS2::closeSockets(), which lets you close all cached network sockets in the resolver object.
  • added Net_DNS2::getSockets(), which returns the local sockets cache array.
  • added date_created and date_last_used to the Net_DNS2_Socket object, to track usage stats on each socket object.
  • added the SHA256, SHA384, and GOST digest defines to Lookups.php.
  • dropped the Net_DNS2_Socket_Sockets, and switch to just using the streams code. There’s no speed difference anymore.
  • fixed a bug in Net_DNS2_Packet::compress() and Net_DNS2_Packet::expand() related to dot literals in compressed names.
  • fixed a display issue in the IPSECKEY RR when displaying hostname / domain names in the gateway field.
  • fixed a couple inconsistencies in the docs.
  • fixed a PHP 7.4 bug in Sockets.php; accessing a null value as an array throws an exception now.
  • fixed Net_DNS2_RR_DS so it will be able to support other digest definitions without any other changes.
  • the Net_DNS2_RR_NIMLOC class was incorrectly named Net_DNS2_RR_NIMLOCK.
  • Net_DNS2_PrivateKey was using the wrong member variable name for the key_format value.
  • changed all references to array() to [].
  • removed all sorts of license noise from the files.
  • updated the test cases to use PHPUnit v9+.

Net_DNS2 v1.4.4 – Bugfixes and Updates for PHP 7.2

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I’ve released version 1.4.4 of the PEAR Net_DNS2 library- this release is primarily just bug fixes.

You can install it now through the command line PEAR installer:

pear install Net_DNS2

Or, you can also add it to your project using composer:

composer require pear/net_dns2

Version 1.4.4

  • Bugfix when returning an empty bitmap-type in BitMap.php – patch from BugMaster510945.
  • Added the BIND 9 private record RR (TYPE65534) – patch from BugMaster510945.
  • Added DNSSEC algorithms 13-16 (ECDSAP256SHA256, ECDSAP384SHA384, ED25519, and ED448).
  • Added SSHFP algoritm ED25519.
  • Modified Net_DNS2::sendPacket() to use current()/next() rather than the deprecated each() (deprecated in 7.2).

Python SDK for the Generator Labs REST API

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We’re extremely excited to announce the release of the office Generator Labs Python SDK. Developers can us this simple wrapper library to integrate all the features of the Generator Labs API into their existing processes.

Installation

The Python SDK can be installed via the Python package manager:

pip install generatorlabs

Or if you prefer, you can clone the source code from the official GitHub repository.

API Access Token

To authenticate API requests, you must use the Account SID and Access Token, available from the Account -> API Access section of the Generator Labs Portal.

Example Usage

Using the Python SDK only requires a few lines of code. In this example, we’ll request a list of hosts from our account:

import generatorlabs

try:
 client = generatorlabs.Client('Your Account SID', 'Your Auth Token')

data = client.hosts.get();

except generatorlabs.GeneratorLabsException as err:
 print(err)

In this example, we’ll start a manual check process, using the real-time check features of the Generator Labs API:

import generatorlabs

try:
 client = generatorlabs.Client('Your Account SID', 'Your Auth Token')

data = client.check.start({

"host": "10.10.10.11",
 "callback": "https://your.website.com/callback.php",
 "details": 1
 });

except generatorlabs.GeneratorLabsException as err:
 print(err)

See our API Reference for a complete list of all the Python SDK features.

Generator Labs – Updated Two-Factor Authentication

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Your account security is extremely important to us here at Generator Labs. Since our initial inception, we’ve supported two-factor authentication using the Clef application, which provided an easy-to-use two-factor authentication, and single sign-on application.

With the recent news that Clef will be shutting down its services in early June (you can read all about it on the Clef blog), we’ve opted to remove support for it early, and implement an alternative two-factor authentication option using TOTP (Time-Based One-Time Passwords), a standard that won’t be going anywhere anytime soon.

TOTP uses an algorithm to compute a one-time password, based on a shared secret and the current time. One benefit of TOTP, is that the 6-digit authentication token that is generated automatically rolls over with time, which dramatically reduces the susceptibility to phishing schemes.

There are many freely available TOTP clients, but Generator Labs recommends the Google Authenticator application, available for free, for Android, iOS, and Blackberry devices. You can learn more about it here:

https://support.google.com/accounts/answer/1066447?visit_id=1-636261663713116260-4136591499&hl=en&rd=1

Two-factor authentication is available today, and can optionally be enabled on any account on the Generator Labs system. For a complete tutorial on setting up two-factor authentication, see the Setting up Two-Factor Authentication guide.