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GTT Communications BYOIP Integration Overview

BYOIP SUPPORTER
ASN 3257
IPv4 support
IPv6 support
LOA support
ROA support
Process Manual
Locations supported
Other: China, India, Malaysia, Philippines, Singapore, South Korea, Thailand, Finland, France, Germany, Italy, Poland, Spain, Canada, United States, Argentina, Australia

This page outlines the technical and procedural information required for integrating Bring Your Own IP (BYOIP) concepts with: GTT’s Tier 1 IP Transit, Dedicated Internet Access (DIA) and IPv4 Address Block Leasing services.

GTT operates a global dual-stack backbone under ASN 3257 and is designed for customers that either bring their own IPv4/IPv6 prefixes and ASN (classic IP Transit / BYOIP model) or consume GTT-assigned and leased address space with BGP and DDoS options.

In practice, BYOIP with GTT is realized in two main ways:

1. Customer-owned prefixes advertised over GTT’s Tier 1 backbone using BGP and communities;

2.IPv4 address leasing, where GTT acts as IP holder and can originate leased /24+ blocks on its backbone or provide LOA/ROA so you can announce them from other networks.

Provider Details

FieldInformation
Provider NameGTT Communications (Tier 1 IP Transit, DIA ; IPv4 Address Leasing)
WebsiteGTT IP Transit (Tier 1 backbone) | Dedicated Internet Access (DIA) | IPv4 Address Block Leasing | BGP communities for IP Transit (AS3257) | Internet
ASN(s) Primary backbone ASN:
AS3257 — GTT-BACKBONE (GTT Communications Inc.), a global Tier 1 network with hundreds of PoPs and thousands of peers/upstreams, carrying a large share of global internet prefixes and offering extensive BGP community control.
Historical / related ASNs may exist for regional entities, but AS3257 is the main public backbone ASN referenced for IP Transit and BGP communities.
Regions Supported GTT’s IP Transit and DIA services are delivered over a global Tier 1 IP backbone that spans hundreds of PoPs worldwide. Public material highlights coverage across:
North America
Europe
Asia
Australia
GTT reaches a very large portion of the global internet routing table and peers at numerous major IXPs, making it suitable for multinational BYOIP, transit and IP leasing scenarios. Specific city and facility availability is determined during design and quotation.
Support Contact GTT Contact ; Sales (quotes, design, commercial enablement) | Customer Support ; NOC (ticket portal) | For BGP and routing policy changes, customers coordinate with GTT NOC and routing teams as indicated in IP Transit documentation; BGP community guides reference dedicated addresses such as noc@gtt.net or bgp-filters@gtt.net for specific filter and community activations.
Tech Article ; Date GTT IP Transit — product description of Tier 1 IP Transit, including global coverage, BGP support, and performance characteristics.
BGP Communities for IP Transit (AS3257) — detailed documentation of customer-controllable BGP communities for traffic engineering and route propagation.
IPv4 Address Block Leasing — explains the IPv4 leasing model, available block sizes (routable /24 or larger), and how blocks can be announced over GTT’s network or other providers, with GTT managing RIR objects, ROAs, rDNS and LOAs.
Dedicated Internet Access — describes DIA delivered across the Tier 1 backbone with real-time reporting via the EnvisionDX portal.
BYOIP Scope GTT’s BYOIP capabilities align with its role as a Tier 1 transit and DIA provider, rather than a cloud or hosting platform:
1) Customer-owned prefixes over IP Transit (classic BYOIP): You bring your own IPv4/IPv6 prefixes (and usually your own ASN) and establish BGP sessions with GTT. Your prefixes are announced over AS3257, benefiting from GTT’s global reach and traffic engineering communities. This is the canonical BYOIP model: your prefixes remain under your ownership and are reachable via GTT as a transit provider.
2) IPv4 Address Block Leasing: If you need additional IPv4 space, GTT can lease routable /24 or larger blocks, predominantly from ARIN and RIPE. These blocks can be announced over GTT’s network (with IP Transit or DIA) and/or over other providers. GTT, as the holder of the space, manages RIR objects, ROAs, rDNS, and LOAs, effectively acting as an IP provider for your infrastructure.
3) GTT-assigned space for DIA and managed services: For sites without their own prefixes, GTT can provide provider-assigned address blocks as part of DIA or managed internet; this is not BYOIP, but is often combined with customer-owned or leased blocks in hybrid designs.
Supported Versions GTT operates a dual-stack backbone with full support for IPv4 and IPv6:
IPv4: Supported for IP Transit, DIA and IPv4 leasing. Leased blocks are available as routable /24 or larger, and customer-owned IPv4 prefixes are accepted via BGP subject to routing policy and standard internet minimums.
IPv6: The backbone is natively dual stack, and IPv6 prefixes from customer ASNs can be advertised via BGP in the same way as IPv4. IPv6 is fully supported for IP Transit and typically for DIA where available.
Exact products (for example IPv6 in leased blocks) should be confirmed with GTT as offerings evolve.
Supported Services BYOIP concepts with GTT apply primarily to:
Tier 1 IP Transit: Customer-owned prefixes and ASNs connecting to AS3257, leveraging BGP communities for granular control of routing and traffic engineering.
Dedicated Internet Access (DIA): Enterprise sites with GTT-assigned or leased IP space, optionally combined with customer prefixes, delivered over diverse access types and the global backbone.
IPv4 Address Block Leasing: GTT as an IP provider, leasing routable /24+ address blocks for use over GTT and/or other networks.
These services can be combined with GTT’s managed security, SD-WAN and other network services for end-to-end connectivity and policy enforcement.

Technical Requirements

RequirementDetails
Prefix Size GTT’s BYOIP-related requirements depend on the service model:
Customer-owned prefixes over IP Transit: GTT follows standard global internet routing practice; practically, the minimum advertised size is usually /24 for IPv4 and /48 for IPv6. More specific routes may be filtered or controlled according to GTT policy and best practices.
IPv4 Address Block Leasing: Published minimum size is a routable /24 or larger block. Leased blocks can be announced over GTT’s network as part of IP Transit or DIA, and/or over other providers.
Prefix aggregation and route hygiene are encouraged to minimize routing table impact and improve stability.
ASN Ownership Required For full BYOIP (customer prefixes over IP Transit), it is typical to have your own public ASN:
IP Transit: Customers normally use their own ASN to peer with AS3257 and advertise prefixes via BGP. Some small or specialized scenarios may involve static routing or private ASN usage, but the standard model assumes a public ASN and BGP on the customer side.
DIA with provider-assigned or leased space: A customer ASN is not strictly required; GTT can assign IP space and route it as part of a managed service. If you combine DIA with Transit or use leased space in a multi-homed design, a public ASN is strongly recommended.
GTT and its partners can advise on ASN acquisition and design where needed.
IRR / Route Objects As a Tier 1 provider, GTT expects accurate routing registry data:
– For customer-owned prefixes, you are responsible for creating and maintaining appropriate IRR route objects (for example in RIPE, RADB, ARIN) that reflect your prefixes and origin ASN. GTT may require these objects to be in place before accepting advertisements.
– For leased IPv4 blocks, GTT acts as the holder of record and will ensure that required RIR database objects and ROAs are created and maintained for those prefixes, as well as updating rDNS and LOAs when needed.
Accurate IRR data reduces the risk of filters dropping your routes and improves global routing hygiene.
ROA or LOA RPKI and formal authorization are increasingly important when working with Tier 1 networks:
Customer-owned prefixes: You should create and maintain RPKI ROAs authorizing your own ASN as origin (and any other ASNs you legitimately use) and be prepared to provide Letters of Authorization (LOAs) to GTT if requested as evidence of routing rights.
Leased IPv4 blocks: GTT, as the holder, will create and maintain ROAs and issue LOAs when necessary. This simplifies your onboarding with other providers when you announce leased space outside of GTT.
Misconfigured or expired ROAs can lead to reachability issues; customers are responsible for maintaining ROAs for their own prefixes.
RIR Limitations BYOIP with GTT assumes public, globally routable IPv4/IPv6 space that is properly registered in one of the RIRs (ARIN, RIPE, LACNIC, APNIC, AFRINIC):
– Customer prefixes must be assigned or allocated to your organization according to RIR policies.
– Transfers, sub-allocations or leasing of your own address space must comply with RIR rules; GTT will typically not advertise space that is clearly out of policy or in dispute.
– For leased IPv4 space, GTT will select blocks from its inventory (predominantly ARIN and RIPE), manage RIR records and ROAs, and ensure legality of the lease under applicable RIR policies.
Any regional policy constraints (for example on “stockpiling”, jurisdictional use or reassignment limits) remain the responsibility of the address holder and contracting parties.

Step-by-Step BYOIP Process

Estimated Setup Time: Typically from a few days to several weeks, depending on commercial negotiation, provisioning lead times, BGP design complexity (single-homed vs multi-homed, traffic engineering), and RIR/ROA and IRR updates.

Tested By Us: Not yet

A) Customer-owned prefixes over GTT IP Transit (classic BYOIP)

  • Engage GTT sales or a partner to scope an IP Transit service, including required bandwidth, PoP locations, redundancy model (single vs dual-homed), and whether you will leverage additional services such as DDoS mitigation or managed routing.
  • Ensure you have a public ASN and one or more globally routable IPv4/IPv6 prefixes (practically /24 or larger for IPv4, /48 or larger for IPv6). Confirm that RIR records list your organization as the holder and that IRR route objects and RPKI ROAs are in place or can be created promptly.
  • As part of contract and technical onboarding, exchange BGP parameters with GTT (AS3257): peering IP addresses, MD5 keys if used, maximum prefix limits, and any standard BGP communities you intend to use for traffic engineering or restricted propagation.
  • Establish BGP peering in a test or low-risk environment first. Advertise test prefixes or less critical routes, validate reachability, routing symmetry, latency, and the effect of GTT’s BGP communities on path preference and distribution. Adjust local-pref, MED, and communities in coordination with GTT if needed.
  • Gradually migrate production prefixes and traffic to transit via GTT: advertise your primary prefixes, ensure other upstreams reflect the desired policy (for example, preferring GTT in key regions), and update monitoring and alerting so that BGP session health and prefix visibility are continuously tracked.
  • Once stable, document your BYOIP over GTT design (prefix list, ASN, BGP communities, DDoS procedures, escalation paths) and schedule periodic reviews to adjust communities, add or remove prefixes, and integrate any additional leased space or new PoPs as your footprint expands.

B) Using GTT IPv4 Address Block Leasing as an IP provider

  • Determine how much additional IPv4 space you need and for how long (for example one or more /24s for a few years). Identify whether the leased blocks will be announced only via GTT (with IP Transit or DIA), or also via other providers as part of a multi-homed or distributed design.
  • Engage GTT or a marketplace partner offering GTT IPv4 leasing to request a quote. Provide information on your intended use, geography, and routing model so GTT can select appropriate blocks (predominantly from ARIN and RIPE) that meet your needs and geolocation expectations.
  • Complete contractual and validation steps. GTT, as the address holder, will set up or update RIR objects, rDNS, RPKI ROAs and LOAs for the leased space, enabling clean routing and straightforward onboarding with GTT and other providers.
  • If you are taking IP Transit or DIA from GTT, coordinate with GTT to have the leased prefixes originated over AS3257 and attached to your services. If you also use other carriers, present LOAs and coordinate with them to accept and announce the leased prefixes, keeping routing policy and ROAs consistent across providers.
  • Integrate the leased IPv4 blocks into your infrastructure: assign addresses to servers, load balancers, VPN gateways or other endpoints; update DNS entries and external allowlists; and verify that geolocation and reputation behave as expected for your applications.
  • Monitor utilisation, performance and abuse reports for the leased blocks. Coordinate with GTT to handle any required changes to rDNS, RIR data or ROAs, and plan ahead for renewing, expanding or returning leased space as demand evolves.

References: GTT IP Transit, AS3257 BGP Communities, IPv4 Address Block Leasing, Dedicated Internet Access (DIA), AS3257 on bgp.he.net.

Cost and Limitations

ItemDetails
Fees GTT does not publish a detailed public price list for IP Transit, DIA or IPv4 leasing; pricing is generally bespoke and based on capacity, term and geography:
IP Transit: Typically priced on committed bandwidth (Mbps or Gbps), often with burst options and multi-year terms. Larger commits and longer terms reduce unit cost; separate charges may apply for DDoS mitigation or other managed features.
Dedicated Internet Access: DIA is priced per-site, based on access technology (fiber, Ethernet, etc.), capacity and options such as managed CPE and SLA tiers.
IPv4 Address Block Leasing: Leasing cost depends on block size (/24 and larger), term and market conditions for IPv4; blocks are offered as an add-on to GTT services and can also be used with other providers. All detailed commercial terms are negotiated with GTT or approved resellers.
Bundled or Standalone GTT is primarily a network service provider, not a cloud or hosting platform:
IP Transit and DIA are network connectivity services that inherently support BYOIP through customer-owned prefixes and BGP.
IPv4 Address Block Leasing can be used as an add-on to GTT IP services or in conjunction with other providers; it effectively makes GTT an IP provider for your environment.
BYOIP here is therefore tightly coupled to connectivity (IP Transit/DIA) rather than to virtual machines or cloud workloads.
Traffic/Peering Restrictions – GTT enforces routing and AUP policies typical of Tier 1 networks, including filters for bogon space, malformed routes and excessive deaggregation.
– Customers are expected to honour maximum prefix limits and use BGP communities according to documented behaviour; non-compliant announcements may be dampened or filtered.
– Certain kinds of traffic (for example unsolicited bulk email, open proxies, persistent DDoS sources) may be restricted or require specific mitigation arrangements.
– Route propagation is ultimately controlled by GTT’s policies and upstream/peer relationships; customers can influence, but not fully control, all aspects of global routing beyond their own AS.
Other Limitations – BYOIP with GTT assumes you have (or are ready to operate) BGP and basic routing hygiene, including IRR and RPKI management for your own prefixes.
– IPv4 leasing provides routable address space but does not absolve customers from maintaining good reputation and security practices; persistent abuse can lead to limitations or termination of leases.
– Regional availability, last-mile options and DIA access technologies vary by location and may constrain where and how quickly you can deploy BYOIP-backed services.
– All specifics around minimum commits, maximum number of prefixes, and supported BGP policy options are contract- and design-dependent and must be confirmed directly with GTT.

Automation ; Developer Access

  • Customer Portal: GTT provides the EnvisionDX customer portal for real-time reporting, monitoring and service management for DIA and other services, giving operational visibility into bandwidth usage, latency, faults and ticket status.
  • BGP as the primary control plane: For BYOIP, the main automation interface is BGP itself — you programmatically control which prefixes are advertised, prepended or tagged with communities from your own routers or automation stack (for example via Ansible, NetBox, or internal tooling).
  • APIs and integrations: While GTT emphasises portals and managed services, some customers integrate GTT into broader NMS/OSS systems using standard protocols (SNMP, syslog, NetFlow/IPFIX) and, where available, APIs exposed by GTT platforms. These can be used to track BYOIP route health and performance trends alongside other providers.
  • Professional and managed services: For complex, multi-region BYOIP designs, GTT and its partners can provide engineering assistance, managed routing, and DDoS or security overlay services, offloading some of the operational burden of running a global BYOIP footprint on a Tier 1 backbone.

Abuse ; Reputation Management

  • When you advertise your own prefixes over GTT IP Transit, you remain responsible for the long-term reputation and security posture of those prefixes. GTT can provide basic abuse handling, blackhole communities and DDoS services, but spam listings, application-layer abuse and end-user behaviour must be managed by you and your downstream customers.
  • For leased IPv4 blocks, GTT maintains RIR and RPKI records and may assist with rDNS and LOA updates, but you are still accountable for how the space is used. Sustained abuse or failure to remediate incidents can damage the reputation of the leased ranges and may trigger contract enforcement, up to and including withdrawal of announcements or early termination.

GTT Homepage
IP Transit (Tier 1 backbone)
AS3257 BGP Communities
Dedicated Internet Access (DIA)
IPv4 Address Block Leasing
AS3257 – GTT Communications Inc. on bgp.he.net
AS3257 on CAIDA ASRank
AS3257 on Cloudflare Radar
GTT Support ; NOC
Contact GTT

FAQ

BYOIP, or Bring Your Own IP, is a service that enables organizations to bring their own public IP addresses—whether owned outright or leased from an IP provider—into a service provider’s network infrastructure. Instead of relying on IP addresses assigned by the provider, BYOIP allows businesses to retain control over their IP resources. This ensures continuity, particularly for organizations with established IP-based reputations, branding, or dependencies on specific address blocks. IP providers can assist in streamlining this process, making it easy to integrate your IPs into the desired network environment.

BYOIP offers several compelling advantages. By using your own IPs, you can maintain continuity in your network’s identity, reduce the risk of disruptions to email deliverability or service recognition, and avoid reputational concerns associated with shared IPs. Additionally, BYOIP provides enhanced flexibility and control over your IP resources.

BYOIP is ideal for organizations that either own public IP addresses or lease them from a trusted IP provider with explicit BYOIP support. This includes enterprises, cloud providers, content delivery networks (CDNs), and businesses with compliance requirements or IP reputation needs. Working with a reputable IP provider ensures that leased IPs can be seamlessly integrated into another provider’s infrastructure without ownership concerns.

You must either legally own the IP addresses or have explicit authorization from a leasing IP provider to route and manage them. IP providers who offer BYOIP-ready IP addresses simplify this process, providing documentation and support to ensure compliance with regional internet registry (RIR) policies and service provider requirements. This collaboration ensures smooth implementation without any legal or operational issues.

To use BYOIP, you’ll typically need to present documentation verifying your authority over the IP block. This can include official records from a regional internet registry (RIR) such as ARIN, RIPE NCC, or APNIC. If you are leasing IPs, the IP provider should supply proof of their ownership and grant you permission for BYOIP. Providers that specialize in IP leasing often handle this paperwork for you, reducing administrative burden and ensuring compliance.

Yes, BYOIP is designed to be a secure and reliable solution. Reputable service providers and IP providers implement robust safeguards to prevent unauthorized use or hijacking of IP addresses. Security measures include BGP filtering, route validation, and advanced protocols like Resource Public Key Infrastructure (RPKI). By collaborating with a trusted IP provider, businesses can benefit from additional layers of protection, ensuring that only authorized traffic is routed through their IP blocks.

The setup process for BYOIP varies by provider, typically taking anywhere from a few hours to a few days. Factors include the complexity of your network, the verification process for IP ownership or authorization, and the time needed for global BGP route propagation. IP providers often expedite the preparation and validation stages, ensuring a smooth and timely integration into the desired infrastructure.

Absolutely. Many providers, in partnership with IP providers, support routing IPs across multiple data centers or geographic regions. This feature optimizes performance for global businesses by reducing latency and improving service availability. When working with an IP provider, you can also ensure that your leased or owned IPs are aligned with your geographic requirements for compliance and efficiency.

If you choose to discontinue BYOIP with a provider, your IP addresses will be released from their network, and routing will cease. You can then reallocate these IPs for use with a different service provider or project.