129.18.0.0/16

Currently announced by AS36923 Swift Networks, in the routed prefix 129.18.0.0/16.

Current ASN: AS36923; Swift Networks
Routed prefix: 129.18.0.0/16; Most specific route covering this prefix
ASNs over time: 1; 1 announcement record
RIR allocation: AFRINIC; Nigeria · 129.18.0.0/16

Routing data · Nov 8, 2026, 10:26 UTC

ASN historyEvery routed prefix covering 129.18.0.0/16

Prefix	ASN	Name	Registered country	First seen (UTC)	Last seen (UTC)	Status
129.18.0.0/16	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing

More specific routes63 total

Prefix	ASN	Name	Registered country	First seen (UTC)	Last seen (UTC)	Status
129.18.0.0/18	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
129.18.0.0/24	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
129.18.1.0/24	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
129.18.2.0/24	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
129.18.64.0/18	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
129.18.128.0/18	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
129.18.128.0/20	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
129.18.141.0/24	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
129.18.142.0/24	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
129.18.144.0/20	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
129.18.144.0/24	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
129.18.149.0/24	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
129.18.155.0/24	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
129.18.160.0/20	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
129.18.160.0/24	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
129.18.166.0/24	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
129.18.169.0/24	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
129.18.170.0/24	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
129.18.171.0/24	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
129.18.176.0/20	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
129.18.178.0/24	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
129.18.180.0/24	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
129.18.181.0/24	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
129.18.182.0/24	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
129.18.183.0/24	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
129.18.184.0/24	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
129.18.186.0/24	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
129.18.187.0/24	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
129.18.188.0/24	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
129.18.189.0/24	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
129.18.191.0/24	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
129.18.192.0/18	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
129.18.193.0/24	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
129.18.194.0/24	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
129.18.195.0/24	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
129.18.196.0/24	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
129.18.197.0/24	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
129.18.198.0/24	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
129.18.199.0/24	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
129.18.200.0/24	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
129.18.201.0/24	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
129.18.202.0/24	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
129.18.203.0/24	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
129.18.204.0/24	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
129.18.206.0/24	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
129.18.207.0/24	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
129.18.214.0/24	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
129.18.216.0/24	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
129.18.218.0/24	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
129.18.219.0/24	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
129.18.220.0/24	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
129.18.221.0/24	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
129.18.222.0/24	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
129.18.231.0/24	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
129.18.233.0/24	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
129.18.235.0/24	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
129.18.236.0/24	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
129.18.240.0/20	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
129.18.240.0/22	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
129.18.244.0/22	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
129.18.248.0/22	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
129.18.252.0/22	AS36923	Swift Networks	Nigeria	Before monitoring	2026-11-08 10:26	Announcing
129.18.255.0/24	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	129.18.0.0/16	WithdrawalAnnounced again	AS36923	Swift Networks	—	Nigeria

Look up another address

RIR allocation record

Registry: AFRINIC
Allocated block: 129.18.0.0/16
Country: Nigeria
Allocation date: 2015-09-04
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.