51.211.0.0/16

Currently announced by AS25019 Saudi Telecom Company (STC SAUDINET), in the routed prefix 51.211.0.0/16.

Current ASN: AS25019; Saudi Telecom Company (STC SAUDINET)
Routed prefix: 51.211.0.0/16; Most specific route covering this prefix
ASNs over time: 1; 1 announcement record
RIR allocation: RIPENCC; Saudi Arabia · 51.211.0.0/16

Routing data · Nov 8, 2026, 10:26 UTC

ASN historyEvery routed prefix covering 51.211.0.0/16

Prefix	ASN	Name	Registered country	First seen (UTC)	Last seen (UTC)	Status
51.211.0.0/16	AS25019	Saudi Telecom Company (STC SAUDINET)	Saudi Arabia	Before monitoring	2026-11-08 10:26	Announcing

More specific routes30 total

Prefix	ASN	Name	Registered country	First seen (UTC)	Last seen (UTC)	Status
51.211.0.0/20	AS25019	Saudi Telecom Company (STC SAUDINET)	Saudi Arabia	Before monitoring	2026-11-08 10:26	Announcing
51.211.16.0/20	AS25019	Saudi Telecom Company (STC SAUDINET)	Saudi Arabia	Before monitoring	2026-11-08 10:26	Announcing
51.211.32.0/20	AS25019	Saudi Telecom Company (STC SAUDINET)	Saudi Arabia	Before monitoring	2026-11-08 10:26	Announcing
51.211.48.0/20	AS25019	Saudi Telecom Company (STC SAUDINET)	Saudi Arabia	Before monitoring	2026-11-08 10:26	Announcing
51.211.64.0/20	AS25019	Saudi Telecom Company (STC SAUDINET)	Saudi Arabia	Before monitoring	2026-11-08 10:26	Announcing
51.211.80.0/20	AS25019	Saudi Telecom Company (STC SAUDINET)	Saudi Arabia	Before monitoring	2026-11-08 10:26	Announcing
51.211.96.0/20	AS25019	Saudi Telecom Company (STC SAUDINET)	Saudi Arabia	Before monitoring	2026-11-08 10:26	Announcing
51.211.112.0/20	AS25019	Saudi Telecom Company (STC SAUDINET)	Saudi Arabia	Before monitoring	2026-11-08 10:26	Announcing
51.211.128.0/20	AS39891	ALJAWWALSTC-AS	Saudi Arabia	Before monitoring	2026-11-08 10:26	Announcing
51.211.144.0/22	AS39891	ALJAWWALSTC-AS	Saudi Arabia	Before monitoring	2026-11-08 10:26	Announcing
51.211.148.0/22	AS39891	ALJAWWALSTC-AS	Saudi Arabia	Before monitoring	2026-11-08 10:26	Announcing
51.211.152.0/23	AS39891	ALJAWWALSTC-AS	Saudi Arabia	Before monitoring	2026-11-08 10:26	Announcing
51.211.154.0/23	AS39891	ALJAWWALSTC-AS	Saudi Arabia	Before monitoring	2026-11-08 10:26	Announcing
51.211.156.0/22	AS39891	ALJAWWALSTC-AS	Saudi Arabia	Before monitoring	2026-11-08 10:26	Announcing
51.211.160.0/21	AS25019	Saudi Telecom Company (STC SAUDINET)	Saudi Arabia	Before monitoring	2026-11-08 10:26	Announcing
51.211.168.0/21	AS25019	Saudi Telecom Company (STC SAUDINET)	Saudi Arabia	Before monitoring	2026-11-08 10:26	Announcing
51.211.176.0/21	AS25019	Saudi Telecom Company (STC SAUDINET)	Saudi Arabia	Before monitoring	2026-11-08 10:26	Announcing
51.211.184.0/23	AS25019	Saudi Telecom Company (STC SAUDINET)	Saudi Arabia	Before monitoring	2026-11-08 10:26	Announcing
51.211.186.0/23	AS25019	Saudi Telecom Company (STC SAUDINET)	Saudi Arabia	Before monitoring	2026-11-08 10:26	Announcing
51.211.188.0/22	AS25019	Saudi Telecom Company (STC SAUDINET)	Saudi Arabia	Before monitoring	2026-11-08 10:26	Announcing
51.211.192.0/22	AS25019	Saudi Telecom Company (STC SAUDINET)	Saudi Arabia	Before monitoring	2026-11-08 10:26	Announcing
51.211.196.0/22	AS25019	Saudi Telecom Company (STC SAUDINET)	Saudi Arabia	Before monitoring	2026-11-08 10:26	Announcing
51.211.204.0/22	AS25019	Saudi Telecom Company (STC SAUDINET)	Saudi Arabia	Before monitoring	2026-11-08 10:26	Announcing
51.211.208.0/20	AS25019	Saudi Telecom Company (STC SAUDINET)	Saudi Arabia	Before monitoring	2026-11-08 10:26	Announcing
51.211.224.0/24	AS25019	Saudi Telecom Company (STC SAUDINET)	Saudi Arabia	2026-11-03 14:26	2026-11-08 10:26	Announcing
51.211.225.0/24	AS25019	Saudi Telecom Company (STC SAUDINET)	Saudi Arabia	2026-11-04 18:21	2026-11-08 10:26	Announcing
51.211.226.0/24	AS25019	Saudi Telecom Company (STC SAUDINET)	Saudi Arabia	2026-11-04 18:21	2026-11-08 10:26	Announcing
51.211.227.0/24	AS25019	Saudi Telecom Company (STC SAUDINET)	Saudi Arabia	2026-11-04 18:21	2026-11-08 10:26	Announcing
51.211.228.0/24	AS25019	Saudi Telecom Company (STC SAUDINET)	Saudi Arabia	2026-11-07 06:25	2026-11-08 10:26	Announcing
51.211.240.0/20	AS25019	Saudi Telecom Company (STC SAUDINET)	Saudi Arabia	Before monitoring	2026-11-08 10:26	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: RIPENCC
Allocated block: 51.211.0.0/16
Country: Saudi Arabia
Allocation date: 1993-09-01
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.