For a while, it is perfectly fine to just be a customer of bigger networks. You rent servers, buy bandwidth from whichever provider your data center recommends, and let someone else’s ASN show up in every traceroute. But if you are a growing hosting provider, regional ISP, or infra‑heavy startup, there comes a point where that model starts to limit you. That is when the question “how do we get our own ASN?” stops being a nerdy side note and becomes a serious business topic.
An Autonomous System Number (ASN) is essentially your network’s identity card on the Internet. It lets you run BGP under your own name, control how traffic enters and leaves your network, and build direct relationships with IP transit providers and IXPs instead of living entirely behind someone else’s routing decisions.
What an ASN Actually Is (In Plain Language)
On the Internet, traffic does not travel from A to B in one jump. It crosses a sequence of independent networks, called autonomous systems, each with its own policies. An ASN is simply the numeric identifier for one of those systems.
When you do not have your own ASN, you are effectively hiding behind someone else’s. You use their IP space or announce space through them. Their ASN appears as the origin in global routing, and their choice of upstreams and policies determines how your traffic flows. With your own ASN, you announce your prefixes directly, decide which upstreams to use, and can build direct peering relationships. In other words, you move from “we consume connectivity” to “we operate a network.”
When It’s Time to Get Your Own ASN
Not every small operator needs an ASN on day one. But there are clear signals that you are ready to consider it.
The first is when you are effectively acting as a provider yourself. If you resell hosting, VPS, or bare‑metal services, or you run a WISP/FISP or small ISP, you are already presenting yourself as the Internet provider to your customers. Your name is on the invoice, but another network’s identity appears in the routing tables. Owning an ASN lets your network exist as a first‑class citizen, with its own reputation and history.
A second signal is when you are buying bandwidth from more than one upstream. Many growing networks end up with two or more providers “for redundancy,” yet still rely on those providers to handle all the BGP. Without your own ASN, you cannot fully express your own routing policy: which paths to prefer, when to fail over, or how to steer traffic away from congestion.
A third sign is that IP reputation and control are starting to matter. If your business depends on clean address space, for example, for email deliverability, security‑sensitive services, or simply to avoid noisy‑neighbor problems—then owning your own prefixes, announced under your own ASN, gives you far more leverage than renting anonymous slices of someone else’s space.
If you recognize yourself in two or more of these situations, it is a good time to look at how to get your own ASN.
How to Get Your Own ASN: High‑Level Steps
The exact forms and fees depend on your regional Internet registry, but the overall process is similar everywhere.
You start by clarifying your use case and sketching a minimal network plan. You should know where your edge routers will live (which data centers or PoPs), how many upstreams you plan to use at first, and whether you will announce your own IP space or begin by announcing space that a partner allocates to you. You do not need a giant design document, only a clear story about why you need an ASN and where it will be used.
Next, you request the ASN from your regional registry and, often, a block of provider‑independent IP addresses. You create or use an organizational account, submit a justification that typically mentions multi‑homing and independence from any single provider, and supply technical and contact details. This step formalizes your move from “just a customer” to an identifiable network.
Once the ASN is assigned, you need routing hardware capable of running BGP. For smaller networks this might be well‑specced servers running routing software; for larger ones, dedicated routers. Either way, someone on your team must be comfortable configuring BGP, handling prefix filters, and monitoring sessions. Your routers will sit at the edge of your network in one or more data centers.
With routers in place, you sign IP transit agreements and bring up BGP sessions with your chosen upstream providers. They will announce the full Internet routing table to you; you will announce your prefixes (or those delegated to you) to them. At this point, your ASN and prefixes become visible to the outside world. Starting with one upstream is possible, but the real value appears when you have at least two and can begin genuine traffic engineering and failover.
Finally, if you are in facilities that host Internet exchanges, you can connect to one or more IXPs. That allows you to peer directly with other networks, eyeball ISPs, CDNs, clouds over a shared fabric instead of sending all traffic through transit. This step is optional at the beginning but becomes a powerful amplifier of what your ASN can do.
What Changes Once You Have Your Own ASN
When your ASN is visible in global BGP tables, several things change at once.
You gain real control over your routing. You can choose which upstreams to use, adjust preference between them, and add or remove providers without renumbering your entire network. You also become a recognizable entity to others: your ASN and prefixes build a reputation over time, based on how you route, how you handle abuse, and how stable your announcements are.
At the same time, the responsibility level goes up. You now have to think about route security, prefix filtering, and basic hygiene like publishing the right records and responding to abuse reports. In exchange, you have far more room to shape performance, resilience, and cost than you ever did as a pure downstream customer.
Why IP Transit and IXPs Still Matter After You Get an ASN
Getting an ASN is not the end of the story; it is the beginning of a new one. Without good IP transit, a sensible choice of data centers, and eventually some peering, an ASN is mostly a vanity plate.
Clean, well‑connected transit providers give you stable paths and useful tools, such as BGP communities for steering your traffic. Data centers in the right places give you access to multiple carriers and to IXPs. Exchanges allow you to reach many important networks over a single port instead of paying transit for every bit.
Put together, these pieces turn your ASN into a genuine platform: you can deliver better performance to your customers, design real redundancy, and negotiate from a stronger position because connectivity is no longer a single vendor decision.
Getting Help Making the Jump
Moving from “hosting customer” to “network owner” can feel intimidating if you have never done it before. A good partner can smooth that path: helping you think through whether now is the right moment to apply, how big your first deployment should be, and which upstreams and locations make sense for your scale.
If you want to talk through whether getting your own ASN fits your plans, what it would cost, and how to phase it in without disrupting your current setup, you can reach out to sales@shifthosting.com with a short description of your existing network and goals.
