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High-performance network and cloud IP address planning utilities built for cloud architects, systems engineers, and DevOps teams. Instant results, RFC 3021 /31 support, permalink state sharing, and full dual-stack IPv4/IPv6 support.
Fundamental CIDR, IPv4/IPv6 subnetting, mask calculation, and VLSM allocation.
CIDR ↔ subnet mask, network/broadcast addresses, usable host range, and wildcard masks with /31 and /32 support.
Full 128-bit IPv6 subnetting, RFC 5952 compression/expansion, prefix ranges, and /64 or /48 block sizing.
Bidirectional converter: expand a CIDR block into an exact IP range, or compute the minimal CIDR set for any IP span.
Real-time 4-way converter between dotted-decimal, 32-bit binary, hexadecimal, and raw integer representations.
Bidirectional conversion between subnet masks and Cisco/OSPF wildcard inverse masks with ACL rule snippets.
Subnet a parent CIDR block across multiple custom departments by required host count with zero waste and free space maps.
Multi-entry conflict auditing and route table supernet summarisation.
Paste 50+ CIDRs or IP ranges to instantly detect overlapping pairs and exact conflict intersections (IPv4 & IPv6).
Compute minimal supernet routes and lossless CIDR aggregations for BGP and internal route table optimization.
Platform-specific reserved-IP planners for Azure, AWS, GCP, and hybrid multi-cloud.
VNet subnet allocation accurately accounting for Microsoft Azure 5 reserved IPs (.0, .1, .2, .3, and .255) with Bicep export.
VPC subnet planning with exact AWS 5 reserved addresses (.0, .1, .2, .3, .255) and multi-AZ Terraform generation.
Google Cloud VPC subnet planning reflecting GCP 4 reserved addresses and secondary alias IP ranges for GKE.
Audit on-premises data centers against Azure, AWS, and GCP networks in one multi-provider conflict matrix.
Persistent enterprise IP address plan, live conflict detection, next-free-subnet, and IaC export.
Named persistent organization IP plan with inline conflict checking, next-free-subnet finder, and Terraform/Bicep export.
Identify the next available, boundary-aligned, non-overlapping subnet within any parent network block.
Every slider adjustment, IP input, and mode change generates a real-time permalink. Share exact calculation snapshots with teammates or bookmark them directly in documentation.
Full 128-bit BigInt calculations with RFC 5952 canonical compression, hextet alignment, and /64 SLAAC host sizing alongside traditional IPv4 CIDR bitmasking.
Unlike generic subnet calculators that assume 2 reserved IPs, our cloud planners accurately account for Azure 5 reserved IPs, AWS 5 reserved addresses, and GCP gateway rules.
Network and cloud architects constantly juggle multiple single-purpose websites for subnet calculation, CIDR range conversion, and cloud VPC reservations. Most competitor sites are ad-ridden, IPv4-only, lack shareable permalinks, and forget calculations upon refresh. AgenorIT Network Toolkit bundles 14 enterprise utilities—covering IPv4, IPv6, Azure, AWS, and GCP—into a high-performance, dark-mode-first engineering app shell with zero gating.
Yes. Our IPv4 Subnet Calculator and VLSM Planner fully comply with RFC 3021. For /31 subnets, both addresses are treated as assignable host interfaces without reserving a dedicated network or broadcast IP, maximizing address space efficiency for router-to-router point-to-point links.
Yes. Every calculator in the toolkit dynamically encodes its active input state into the URL query parameters. Simply click the "Share Calculation" button in the permalink bar to copy a shareable link that recreates the exact subnet, VLSM allocation, or format conversion on reload.
Need this designed for a real production environment?
Consult with Gurinder Singh and vetted cloud specialists for Azure Landing Zones, AWS VPC peering, and hybrid connectivity.