197.101.0.0/16

Currently announced by AS3741 NTT DATA, IS, South Africa, in the routed prefix 197.101.0.0/16.

Current ASN: AS3741; NTT DATA, IS, South Africa
Routed prefix: 197.101.0.0/16; Most specific route covering this prefix
ASNs over time: 1; 2 announcement records
RIR allocation: AFRINIC; South Africa · 197.96.0.0/13

Routing data · Nov 1, 2026, 22:23 UTC

ASN historyEvery routed prefix covering 197.101.0.0/16

Prefix	ASN	Name	Registered country	First seen (UTC)	Last seen (UTC)	Status
197.101.0.0/16	AS3741	NTT DATA, IS, South Africa	South Africa	Before monitoring	2026-11-01 22:23	Announcing
197.96.0.0/13	AS3741	NTT DATA, IS, South Africa	South Africa	Before monitoring	2026-11-01 22:23	Announcing

More specific routes20 total

Prefix	ASN	Name	Registered country	First seen (UTC)	Last seen (UTC)	Status
197.101.78.0/23	AS20011	NTT DATA, Broadband, South Africa	South Africa	Before monitoring	2026-11-01 22:23	Announcing
197.101.82.0/23	AS20011	NTT DATA, Broadband, South Africa	South Africa	Before monitoring	2026-11-01 22:23	Announcing
197.101.88.0/22	AS20011	NTT DATA, Broadband, South Africa	South Africa	Before monitoring	2026-11-01 22:23	Announcing
197.101.92.0/22	AS20011	NTT DATA, Broadband, South Africa	South Africa	Before monitoring	2026-11-01 22:23	Announcing
197.101.116.0/22	AS20011	NTT DATA, Broadband, South Africa	South Africa	Before monitoring	2026-11-01 22:23	Announcing
197.101.120.0/22	AS20011	NTT DATA, Broadband, South Africa	South Africa	Before monitoring	2026-11-01 22:23	Announcing
197.101.124.0/22	AS20011	NTT DATA, Broadband, South Africa	South Africa	Before monitoring	2026-11-01 22:23	Announcing
197.101.134.0/23	AS20011	NTT DATA, Broadband, South Africa	South Africa	Before monitoring	2026-11-01 22:23	Announcing
197.101.136.0/21	AS20011	NTT DATA, Broadband, South Africa	South Africa	Before monitoring	2026-11-01 22:23	Announcing
197.101.144.0/21	AS20011	NTT DATA, Broadband, South Africa	South Africa	Before monitoring	2026-11-01 22:23	Announcing
197.101.162.0/23	AS20011	NTT DATA, Broadband, South Africa	South Africa	Before monitoring	2026-11-01 22:23	Announcing
197.101.166.0/23	AS20011	NTT DATA, Broadband, South Africa	South Africa	Before monitoring	2026-11-01 22:23	Announcing
197.101.168.0/23	AS20011	NTT DATA, Broadband, South Africa	South Africa	Before monitoring	2026-11-01 22:23	Announcing
197.101.170.0/23	AS20011	NTT DATA, Broadband, South Africa	South Africa	Before monitoring	2026-11-01 22:23	Announcing
197.101.172.0/22	AS20011	NTT DATA, Broadband, South Africa	South Africa	Before monitoring	2026-11-01 22:23	Announcing
197.101.184.0/22	AS20011	NTT DATA, Broadband, South Africa	South Africa	Before monitoring	2026-11-01 22:23	Announcing
197.101.190.0/23	AS20011	NTT DATA, Broadband, South Africa	South Africa	Before monitoring	2026-11-01 22:23	Announcing
197.101.196.0/22	AS20011	NTT DATA, Broadband, South Africa	South Africa	Before monitoring	2026-11-01 22:23	Announcing
197.101.216.0/22	AS20011	NTT DATA, Broadband, South Africa	South Africa	Before monitoring	2026-11-01 22:23	Announcing
197.101.220.0/22	AS20011	NTT DATA, Broadband, South Africa	South Africa	Before monitoring	2026-11-01 22:23	Announcing

Change logAll changes

The routes covering this address have had no origin changes since ASNBase started monitoring.

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RIR allocation record

Registry: AFRINIC
Allocated block: 197.96.0.0/13
Country: South Africa
Allocation date: 2010-11-30
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.