IPv4 & IPv6 addresses, BGP & transit
Clean, RIPE-allocated address space from our AS48825 network — from a single /29 to full BGP sessions announcing your own PI prefixes, backed by a UK NOC 24/7.
Addressing
Dual-stack IPv6
Autonomous system
AS48825 · RIPE
AS48825
Our own ASN
IPv4 + IPv6
Dual-stack standard
RPKI
All prefixes signed
24/7
UK NOC support
Everything you need for production IP
From a handful of clean IPv4 addresses to BGP transit with your own ASN — all from one UK provider.
IPv4 Allocations
Clean, RIPE-allocated IPv4 space from /29 single-rack assignments through to larger /24 PI blocks for customers running their own BGP.
Native IPv6
Dual-stack as standard. /64 per VLAN included, with /48 PA assignments available for customers who need to subnet across multiple sites or services.
BGP Sessions
We peer BGP with your edge router or firewall over our AS48825 backbone — IPv4, IPv6, multi-session, MD5 authenticated, with route filtering and prefix limits.
Announce Your Own IPs
Bring your own PI space and we'll announce it for you via AS48825 with a signed LOA. Full BGP communities for traffic engineering and blackholing.
RIPE-Registered
All assignments are correctly documented in the RIPE database with accurate inetnum, inet6num and route objects — essential for clean deliverability.
Reverse DNS
Full forward and reverse DNS delegation on every assignment. Self-service PTR management or we'll host the zones for you.
Clean Address Space
Every block is checked against major RBLs and reputation services before allocation. We monitor continuously and act fast on any abuse reports.
RPKI / ROA Signed
All originated prefixes are RPKI-signed via RIPE, so route-origin validation works end-to-end across the global routing table.
BGP sessions & customer prefix announcements
If you operate your own ASN — or want to — we'll peer BGP with you over our Cambridge backbone and originate your prefixes through AS48825.
- Multi-protocol sessions — IPv4 and IPv6 over the same session, MD5-authenticated, with prefix limits and inbound filtering.
- Full table or default — choose a full BGP table (IPv4 + IPv6) for your edge or a simple default route.
- Communities — AS prepending, selective announcement to specific upstreams/IX, and remote-triggered blackholing.
- Bring-your-own-IP — we'll originate your PI space via AS48825 against a signed LOA, with RIPE route objects and RPKI ROAs.
- Diverse upstreams — multi-homed transit plus peering at LINX, LONAP and IX Manchester.
Example session
! Fast2host BGP peering (AS48825)
router bgp 65000
neighbor 185.x.x.1 remote-as 48825
neighbor 185.x.x.1 password <md5>
neighbor 185.x.x.1 prefix-list F2H-IN in
neighbor 185.x.x.1 prefix-list CUST-OUT out
!
address-family ipv4 unicast
network 192.0.2.0/24
address-family ipv6 unicast
neighbor 2a0a:x::1 activate
network 2001:db8::/32We'll send your exact peering details, prefix-list scaffold, RPKI ROAs and the IRR route objects on request.
Who we provide IP space for
From mail platforms that need impeccable rDNS to ISPs that need a clean upstream — we tailor every allocation.
Hosting & SaaS providers
Per-customer /29 or /28 assignments with clean rDNS for SMTP, plus a /48 IPv6 block per tenant.
Mail platforms
Carefully warmed, RBL-clean IPv4 with proper rDNS / HELO matching — built for senders that need to land in the inbox.
ISPs & network operators
Upstream transit with full BGP table or default route, IPv4 + IPv6, transparent communities and 24/7 NOC contact.
Multi-site & DR
Announce the same PI prefix from your premises and our Cambridge DC for active/active or fail-over.
How to get started
01
Tell us what you need
Number of IPv4 addresses, IPv6 requirement, whether you need BGP, and your intended use. We'll confirm what's available and the RIPE justification we need.
02
We allocate & configure
We assign the addresses from clean ranges, register them in RIPE, configure rDNS delegation and set up BGP sessions where required.
03
Go live & stay supported
Sessions come up, prefixes propagate within minutes. Our UK NOC monitors 24/7 and any abuse or routing issue lands on a real engineer.
12 common questions