CALCULATE / IP60BPS / MODULE
IPV6 PREFIX SPLIT
Split one IPv6 parent prefix into equal child networks with exact 128-bit browser-local arithmetic.
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COMMON SPLITS
The exact child count can be extremely large. 0bps calculates the full count but renders and exports only the first 256 child prefixes to keep the browser responsive. No live routing test is performed.
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RESULT / EXPLAINED
Exact address math, with operational claims kept separate.
The network-planning tools perform deterministic IPv4/IPv6 arithmetic locally. They describe address-space relationships, not whether a network is deployed correctly.
What is exact
Network boundaries, containment, ranges, prefix lengths, masks and exact aggregation/splitting results come from deterministic address arithmetic.
Canonical output
Normalized network values remove host bits where appropriate. Containment means one calculated address range fully includes another; overlap means ranges intersect.
No live network validation
The browser does not confirm routing tables, VLANs, DHCP, firewall rules, ownership, reachability or whether the calculated prefix is appropriate for your deployment.
Before deployment
Use the arithmetic result as a planning input, then verify it against the real network design, routing/firewall policy and authoritative address allocation.
0BPS SHOWS MEASURED OR CALCULATED FACTS SEPARATELY FROM INTERPRETATION. WHERE A RESULT IS ADVISORY, ESTIMATED OR DESTINATION-SPECIFIC, THE LIMIT IS STATED IN THE TOOL.
REFERENCE / FAQ
COMMON QUESTIONS
What does splitting an IPv6 prefix do?
It increases the prefix length to divide one parent network into equal child prefixes. Every child stays completely inside the parent prefix.
Why are only the first 256 child prefixes rendered?
A broad IPv6 prefix can contain an enormous number of children. 0bps calculates the exact total but caps visible and exported rows to keep the browser responsive.
Does this test live IPv6 routing?
No. The split is exact browser-local prefix math. It does not inspect BGP, reachability, ownership or firewall state.
The child prefix must be equal to or longer than the parent. Each generated child covers the same number of IPv6 addresses.
The exact child count can be enormous, so the interface renders and exports only the first 256 while preserving the true total.
PRACTICAL / EXAMPLES
PUT THE NUMBER IN CONTEXT.
Short examples using the same units and assumptions as this module.
Splitting one /48 to /52 creates 16 equal child prefixes.
A /64 split to /68 creates 16 child prefixes; each child contains 2^60 addresses.