Autonomous system
AS1239 SPRINTLINK
Unclassified ARIN
Summary
Sprint (SprintLink), now Cogent Communications
transit legacy
The legacy SPRINTLINK backbone — historically Sprint's global internet transit network — now owned and operated by Cogent Communications.
What it's used for
- A long-haul IP transit backbone. Cogent acquired the former Sprint wireline business (including SprintLink) in 2023.
Notable
- A Tier 1 transit network rather than an eyeball ISP. One of the internet's original backbones.
Interesting
- Registered in 1991, AS1239 is a genuinely early allocation from the commercial internet's formative years, even though its owner has since changed.
This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy. Source, and how to suggest an edit.
Interconnection
Peering at a glance
Internet exchanges
Recorded at 17 exchanges in 10 countries, largest first.
| Exchange | Location | Their address |
|---|---|---|
| DE-CIX Frankfurt | Frankfurt, Germany | 2001:7f8::4d7:0:1 |
| LINX LON1 | London, United Kingdom | 195.66.225.35 |
| AMS-IX Amsterdam | Amsterdam, Netherlands | 80.249.209.214 |
| Equinix Internet Exchange Singapore | Singapore, Singapore | 27.111.230.99 |
| Equinix Internet Exchange Ashburn | Ashburn, United States | 2001:504:0:2::1239:1 |
| Seattle Internet Exchange | Seattle, United States | 206.81.80.232 |
| Equinix Internet Exchange Chicago | Chicago, United States | 208.115.136.11 |
| DE-CIX Madrid | Madrid, Spain | 2001:7f8:a0::4d7:0:1 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-10, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 0 prefixes · 0 addresses IPv6 1 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 1 |
Registry
Allocation record
- Registry
- ARIN
- Registered
- 1991-03-25
- Allocation
- assigned
Routing security
RPKI and IRR
- ROAs
- 629 authorising AS1239
- ASPA
- 1 declared providers
- Route objects
- 986 naming AS1239
Reputation
Classification and threat
Unclassified Not in the curated lists. Most of the ~80,000 allocated ASNs are not.
Spamhaus DROP
Not on ASN-DROP The network as a whole is not listed.
No DROP prefixes None of its announced space is on the DROP prefix list.
Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 431 networks and 1,775 prefixes, as published 2026-10-11. A short, high-confidence list, so a match is worth taking seriously, and absence from it says little on its own.
FBI IC3
No IC3 indicators Nothing from the FBI IC3 feed.
IC3 threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.
Elsewhere