41.58.0.0/16

Currently announced by AS36923 Swift Networks, in the routed prefix 41.58.0.0/16.

Current ASN: AS36923; Swift Networks
Routed prefix: 41.58.0.0/16; Most specific route covering this prefix
ASNs over time: 1; 1 announcement record
RIR allocation: AFRINIC; Nigeria · 41.58.0.0/16

Routing data · Nov 8, 2026, 10:26 UTC

ASN historyEvery routed prefix covering 41.58.0.0/16

Prefix	ASN	Name	Registered country	First seen (UTC)	Last seen (UTC)	Status
41.58.0.0/16	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing

More specific routes56 total

Prefix	ASN	Name	Registered country	First seen (UTC)	Last seen (UTC)	Status
41.58.40.0/21	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
41.58.48.0/20	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
41.58.64.0/20	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
41.58.80.0/20	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
41.58.96.0/20	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
41.58.112.0/20	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
41.58.112.0/22	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
41.58.116.0/22	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
41.58.120.0/22	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
41.58.124.0/22	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
41.58.128.0/20	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
41.58.129.0/24	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
41.58.130.0/24	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
41.58.131.0/24	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
41.58.133.0/24	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
41.58.142.0/24	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
41.58.144.0/20	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
41.58.151.0/24	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
41.58.153.0/24	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
41.58.156.0/24	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
41.58.159.0/24	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
41.58.160.0/20	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
41.58.160.0/24	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
41.58.162.0/24	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
41.58.163.0/24	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
41.58.164.0/24	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
41.58.170.0/24	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
41.58.175.0/24	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
41.58.176.0/20	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
41.58.176.0/24	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
41.58.177.0/24	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
41.58.178.0/24	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
41.58.179.0/24	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
41.58.180.0/24	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
41.58.182.0/24	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
41.58.185.0/24	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
41.58.187.0/24	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
41.58.188.0/24	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
41.58.189.0/24	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
41.58.190.0/24	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
41.58.191.0/24	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
41.58.192.0/18	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
41.58.192.0/20	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
41.58.208.0/20	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
41.58.212.0/22	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
41.58.220.0/22	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
41.58.224.0/20	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
41.58.224.0/22	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
41.58.228.0/22	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
41.58.232.0/22	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
41.58.236.0/22	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
41.58.240.0/20	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
41.58.240.0/22	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
41.58.244.0/22	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
41.58.248.0/22	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
41.58.252.0/22	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing

Change logAll changes

Detected (UTC)	Prefix	Change	ASN	Name	Previous ASN	Country
2026-11-05 18:22	41.58.0.0/16	WithdrawalAnnounced again	AS36923	Swift Networks	—	Nigeria

Look up another address

RIR allocation record

Registry: AFRINIC
Allocated block: 41.58.0.0/16
Country: Nigeria
Allocation date: 2010-03-08
Status: allocated

From the RIRs’ delegated statistics files. Shows where the addresses are registered, not where they are used.

How monitoring works

Every 2 hours ASNBase takes the bgp.tools global routing table (prefix → origin ASN) and compares it with the previous one. The detected time is the time of that comparison; the actual change can be up to about 2 hours earlier.
Only routes seen by more than 100 bgp.tools peers are listed as changes; routes with less visibility are only kept in the history.
A new announcement counts only if it is still in the next routing table, and a withdrawal only if the prefix is missing from two tables in a row, so short flaps are ignored.
ASNBase has been monitoring since 2026-10-19. “Before monitoring” under “First seen” means the route was already announced when monitoring started; the earlier date is unknown.
Prefixes first seen during the first day of monitoring do not count as new announcements: most of them were simply missing from the table at the moment monitoring started.
Countries and regions follow the ASN’s registration, not the actual location of the IP addresses.