Complete Network Mgmt Platform: DNS Zone, Recursion, DHCP, IPAM & NOC Monitoring

DNS Guru is for complete network administration platform with authoritative DNS, recursion and DNS resolver server platform. It edits zones and records in its own database, writes in BIND compatible configuration. It also contains a built-in DHCP server, robust IPAM / DDI functionality, along with fully integrated NOC monitoring platform.

Dashboard

DNS service & cache state, process ID, uptime, listen address, resolver mode, automatic restarts, zone/record counts and the last apply. Start, restart or stop service from here.

DNS zones, records and Apply

Zones holds each zone\'s SOA settings; Records holds each zone\'s records (A, AAAA, CNAME, MX, TXT, PTR, SRV, NS and more). Edits are saved in DNS_guru first and are not live until you open Apply, review the changes and apply them. Apply validates the configuration, writes the zone files and restarts DNS service.

Resolver and cache

Names that are not in your own zones are resolved according to the resolver mode set under Settings (for example forwarding to your upstream servers). The cachepage lists names resolved recently with the time left before they expire, and can dump (text/CSV) or flush the cache.

NOC and monitors

Monitors define ping, TCP, HTTP(S) and DNS checks against your devices. The NOC page shows them as tiles with up/down status, latency and history for a wall screen. Monitors only observe; they never change DNS.

IPAM: subnets, sweep, allocations

Subnets: add an IPv4 subnet (/16 to /30). Network, broadcast and gateway addresses are reserved automatically.

Health monitors include, ping,TCP, HTTP, HTTPS and DNS query

Allocations: define what a range of the subnet is used for. A Static allocation turns every address in its range into an allocated address that shows up, down or not checked. A DHCP allocation is the address pool of that subnet\'s DHCP scope; leased addresses show as DHCP · leased (cyan). Dynamic allocations are saved but reserved for a future programmatic allocator; they do nothing yet.

Undefined (amber): an address answered the sweep but is not inside a Static allocation and has no address entry of its own. Add a Static allocation that covers it, or edit the address, to make it allocated.

Greenfield workflow: + Add subnet → Sweep now → look at the undefined addresses → add a Static allocation for the range in use.

DHCP (1.5.0)

Server: a built-in DHCPv4 server on UDP port 67. Turn it on with the switch on the DHCP page; run Rogue check now first to make sure no router or other server already hands out addresses. Leave the listen address blank to answer on every network card, or enter one IP of this computer.

Scopes: one per IPAM subnet. The pool is the subnet\'s IPAM allocations of type DHCP. Each scope sets lease time (8 h default), router, DNS servers (default: this DNS server), domain name, up to 8 custom options and whether to ping an address before offering it.

Reservations give one MAC address the same IP every time; they are stored as allocated IPAM addresses. Reserve on a lease turns it into a reservation.

Relayed requests from a router\'s DHCP relay (giaddr) are served when a scope exists for that subnet. DNS_guru acting as a relay agent itself is planned for 1.5.1.

DNS registration: with “Register leases in DNS” on, a batch (every 60 s by default) adds A and PTR records for leases with a hostname and removes them when leases end. These records are marked DHCP on the Records page and are read-only. They never replace a manual record; a clash shows “Name in use”. The batch applies DNS changes like the Apply page does, so pending manual edits are applied at the same time.

Without an activated licence after the trial, existing scopes keep serving and renewing, but turning DHCP on and DHCP edits are blocked. Turning it off is always allowed.

Subnet calculator

The Subnet calculator box under Allocations (IPAM page) works out classful A/B/C subnetting in your browser: enter an address (or pick a class for a sample), choose a mask, and it shows the network and broadcast addresses, usable host range, hosts per subnet, how many subnets the classful network splits into, the subnet/host/network bits and the mask in binary, plus the first subnets. /31 is treated as a point-to-point link (RFC 3021, 2 usable) and /32 as a single host. It changes nothing and needs no licence.

CSV import and export

Monitors and IPAM addresses can be exported to CSV and imported back (or from another tool); monitors also accept JSON and a drop folder. Imports report what was created, updated, skipped and why. IPAM can also fill a subnet from the A/PTR records in your zones (Import from DNS).

Settings

DNS listen address and port, resolver mode and forwarders, allowed client networks, the admin site\'s HTTPS port, the admin user name and password, and the license.

Licensing and trial

A new install runs as a full 10-day trial. After the trial, DNS keeps running and everything stays viewable, but changes (zones, records, Apply, imports and IPAM edits) are read-only until an activation code is entered under Settings › Licence.

This software is provided to the licensee for installation and use on computersthe licensee owns or administers. Redistribution, resale, or publication of thesoftware or of its source code requires written permission from the copyrightholder.THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS ORIMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESSFOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE COPYRIGHTHOLDER BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY ARISING FROM THE USEOF THE SOFTWARE, INCLUDING ANY INTERRUPTION OF NAME RESOLUTION ON A NETWORK.
MIT OR Apache-2.0. Copyright (c) 2026