BYOIP Guides & Insights
Practical guides, provider comparisons and technical explanations for bringing your own IP addresses to cloud and network infrastructure.
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What a BGP Tunnel Filter Actually Does
Import and export prefix filters control which routes cross a GRE or IPsec BGP session. Learn how allow and deny profiles behave, why explicit tunnel prefixes can bypass export filters, and why inbound route limits apply before filtering.
9 min read · Updated 19 October 2026
Read articleWhen a Valid ROA Still Leaves a Hole
A covering ROA with a permissive maxLength can make a forged-origin sub-prefix announcement evaluate as RPKI-valid. See why 16.2% of RPKI-covered IPv4 routes remain exposed and how minimal-length ROAs close the gap.
10 min read · Updated 19 October 2026
Read articleASPA After You Already Publish ROAs
ROAs verify which ASN may originate a prefix, but they cannot detect route leaks or forged upstream paths. Learn how Autonomous System Provider Authorization (ASPA) validates Customer-to-Provider hops and how to prepare your records.
10 min read · Updated 19 October 2026
Read articleWhat Is IP Allowlisting?
IP allowlisting restricts access to approved source addresses. See why NAT, CGNAT and dynamic IPs break naive rules, and what a stable egress address fixes.
6 min read · Updated 18 September 2026
Read articleWhat Is IP Geolocation?
IP geolocation estimates location from an address using external databases. Learn why lookups disagree, what a geofeed corrects, and why BYOIP migrations can show stale locations.
4 min read · Updated 18 September 2026
Read articleAnycast vs Unicast: What's the Difference?
One address, one server versus one address announced from many sites. See how BGP decides which site answers, and why anycast isn't automatic load balancing or failover.
5 min read · Updated 18 September 2026
Read articleWhy Are IPv4 Addresses Running Out?
IPv4 exhaustion limits the supply of additional addresses. Learn why existing connections keep working and what options networks have for growth.
5 min read · Updated 11 September 2026
Read articleWhat Is IPv4 Leasing, and How Does It Work?
IPv4 leasing provides access to address space for an agreed period. Understand the costs, routing setup, and practical checks before choosing a block.
6 min read · Updated 15 September 2026
Read articleLeasing vs Buying IPv4 Addresses: Which Makes Sense?
Should you lease an IPv4 block or acquire it through a transfer? Compare the costs, operational responsibilities, and consequences of each choice.
6 min read · Updated 15 September 2026
Read articleWhat Is IP Address Reputation?
An IP address can carry a history of activity. Learn how reputation checks work, what a blocklist result means, and how to investigate problems.
6 min read · Updated 11 September 2026
Read articleWhat Is Reverse DNS? PTR Records Explained
Reverse DNS looks up a hostname from an IP address. See how PTR records work, how to check them, and why the IP provider usually controls the setup.
6 min read · Updated 11 September 2026
Read articleWhat Is BGP? How Internet Routing Works
BGP tells networks how to reach IP address blocks. Learn what a route announcement means, how paths are selected, and why routing matters for BYOIP.
6 min read · Updated 11 September 2026
Read articleWhat Is a Subnet? A Beginner's Guide
Subnets organize a network into smaller address ranges. Learn how devices, subnet masks, and gateways fit together with a simple office example.
5 min read · Updated 10 September 2026
Read articleWhat Is CIDR Notation? IP Address Ranges Explained
Understand the slash in an IP range, calculate how many addresses a block contains, and recognize the difference between total and usable addresses.
5 min read · Updated 10 September 2026
Read articleWhat Is NAT, and How Does It Work?
Follow two devices through a NAT gateway to see how address translation works, why ports matter, and what NAT does and does not provide.
6 min read · Updated 10 September 2026
Read articleStatic vs Dynamic IP Addresses: What's the Difference?
Understand when an IP address stays fixed, when it can change, and how to choose the right assignment method for your network.
5 min read · Updated 10 September 2026
Read articleDedicated vs Shared IP Addresses: Which Do You Need?
A dedicated IP provides exclusive use within a service. Find out what that changes for hosting, access rules, and email delivery.
5 min read · Updated 10 September 2026
Read articleWhat Is a Reserved IP Address?
Reserved IP can mean a retained cloud address, a fixed DHCP assignment, or special-purpose address space. Here is how to tell the difference.
6 min read · Updated 10 September 2026
Read articleWhat Is an IP Address? A Simple Guide
A beginner-friendly explanation of IP addresses: what they do, how they are assigned, and why one device can use several of them.
5 min read · Updated 9 September 2026
Read articleIPv4 vs IPv6: What's the Difference?
IPv4 and IPv6 do the same basic job, but use different address formats. Compare their capacity, compatibility, and practical differences.
6 min read · Updated 9 September 2026
Read articlePublic vs Private IP Addresses: What's the Difference?
Understand where public and private IP addresses are used, how to recognize private ranges, and why your device and an IP checker can show different addresses.
6 min read · Updated 9 September 2026
Read articleWhat Is RPKI? ROAs, Origin Validation and Your BYOIP Prefix
Learn how Route Origin Authorizations let networks validate a BGP origin, why clouds require them for advertised BYOIP ranges, and how to choose the right ASN and max length.
12 min read · Updated 20 August 2026
Read articleWhat Is an ASN? The Number Behind Every BYOIP Announcement
Learn what an Autonomous System Number identifies, how BGP uses ASNs and AS paths, and why most cloud BYOIP deployments do not require you to obtain your own ASN.
11 min read · Updated 20 August 2026
Read articleWho Actually Owns an IP Address? (And Why It Matters for BYOIP)
IANA, RIRs, registered holders and lessees: learn who controls IP address space, what ownership means in practice, and what you must prove before a cloud can announce your prefix.
10 min read · Updated 20 August 2026
Read articleAutomating BYOIP: From Registry Proof to Cloud Advertisement
Manual BYOIP crosses registries, DNS, PKI, IAM and BGP. See what should be automated, what still needs human control, and how IPXO approaches AWS provisioning.
10 min read · Updated 4 August 2026
Read articleBYOIP on AWS, Google Cloud and Azure: What Actually Differs?
Compare prefix requirements, validation methods, IPv6 support, provisioning timelines, routing controls, service integrations and operational caveats.
12 min read · Updated 4 August 2026
Read articleWhat Is BYOIP? A Practical Guide to Bringing Your Own IP Addresses
Learn how organizations retain their public IP identity across clouds and networks: and where BGP, RPKI, ROAs, ownership validation and address reputation fit.
9 min read · Updated 4 August 2026
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