asn.dev

Routing security

AS33820 REED-ELSEVIER-AS

Unclassified RIPE

RPKI valid 100% 19 of 19 announcements
RPKI invalid 0 none
No ROA 0 not covered by any ROA
IRR registered 100% 0 missing · 0 other origin
ROAs 26 authorising this AS

Announcements

What this network originates

19 observed

Every prefix observed with AS33820 as its origin, checked against RPKI and the IRR. Problems sort first.

PrefixRPKIIRRVantage points
145.36.0.0/20RPKI validIRR57
145.36.16.0/20RPKI validIRR54
145.36.32.0/20RPKI validIRR54
145.36.48.0/24RPKI validIRR53
145.36.49.0/24RPKI validIRR53
145.36.50.0/24RPKI validIRR54
145.36.51.0/24RPKI validIRR54
145.36.52.0/24RPKI validIRR53
145.36.53.0/24RPKI validIRR54
145.36.54.0/24RPKI validIRR53
145.36.55.0/24RPKI validIRR54
145.36.56.0/24RPKI validIRR57
145.36.57.0/24RPKI validIRR57
145.36.58.0/24RPKI validIRR57
145.36.59.0/24RPKI validIRR54
198.176.121.0/24RPKI validIRR57
198.176.123.0/24RPKI validIRR54
198.176.124.0/24RPKI validIRR54
198.176.126.0/24RPKI validIRR54

RPKI · ROAs

Route origin authorisations

26 ROAs

Signed statements by address holders that AS33820 may originate these prefixes, up to the maximum length shown.

PrefixMax lengthTrust anchor
145.36.0.0/20/20RIPENCC
145.36.16.0/20/20RIPENCC
145.36.32.0/20/20RIPENCC
145.36.48.0/24/24RIPENCC
145.36.49.0/24/24RIPENCC
145.36.50.0/24/24RIPENCC
145.36.51.0/24/24RIPENCC
145.36.52.0/24/24RIPENCC
145.36.53.0/24/24RIPENCC
145.36.54.0/24/24RIPENCC
145.36.55.0/24/24RIPENCC
145.36.56.0/24/24RIPENCC
145.36.57.0/24/24RIPENCC
145.36.58.0/24/24RIPENCC
145.36.59.0/24/24RIPENCC
145.36.60.0/24/24RIPENCC
145.36.61.0/24/24RIPENCC
145.36.62.0/24/24RIPENCC
145.36.63.0/24/24RIPENCC
145.36.64.0/19/19RIPENCC
145.36.96.0/19/19RIPENCC
145.36.128.0/17/17RIPENCC
198.176.121.0/24/24ARIN
198.176.123.0/24/24ARIN
198.176.124.0/24/24ARIN
198.176.126.0/24/24ARIN

ROA-based and RPKI-valid-only prefix lists for routers are on asn.ipinfo.app.

RPKI · ASPA

Declared transit providers

No ASPA record This network has not published an ASPA object. ASPA lets a network sign the list of its transit providers, so routers can reject paths that route through anyone else (route leaks). Only a few thousand networks publish one so far, so its absence is normal.

IRR

Registered route objects

38 objects · 0 not announced

Route objects naming AS33820 as origin, across RADb, the RIR registries, ALTDB and NTTCOM. Objects that are registered but not announced come first: a stale object lets anyone who can spoof this origin through an IRR-built filter.

PrefixSourceDescriptionMaintainerChangedRouting
145.36.0.0/20RADBAmazon EC2 PrefixMAINT-AS165092026-03-18Announced
145.36.0.0/20RIPE—UK-ELSEVIERLTD-1-MNT2026-03-19Announced
145.36.16.0/20RADBAmazon EC2 PrefixMAINT-AS165092026-03-18Announced
145.36.16.0/20RIPE—UK-ELSEVIERLTD-1-MNT2026-03-19Announced
145.36.32.0/20RADBAmazon EC2 PrefixMAINT-AS165092026-03-18Announced
145.36.32.0/20RIPE—UK-ELSEVIERLTD-1-MNT2026-03-19Announced
145.36.48.0/24RADBAmazon EC2 PrefixMAINT-AS165092026-03-18Announced
145.36.48.0/24RIPE—UK-ELSEVIERLTD-1-MNT2026-03-19Announced
145.36.49.0/24RADBAmazon EC2 PrefixMAINT-AS165092026-03-18Announced
145.36.49.0/24RIPE—UK-ELSEVIERLTD-1-MNT2026-03-19Announced
145.36.50.0/24RADBAmazon EC2 PrefixMAINT-AS165092026-03-18Announced
145.36.50.0/24RIPE—UK-ELSEVIERLTD-1-MNT2026-03-19Announced
145.36.51.0/24RADBAmazon EC2 PrefixMAINT-AS165092026-03-18Announced
145.36.51.0/24RIPE—UK-ELSEVIERLTD-1-MNT2026-03-19Announced
145.36.52.0/24RADBAmazon EC2 PrefixMAINT-AS165092026-03-18Announced
145.36.52.0/24RIPE—UK-ELSEVIERLTD-1-MNT2026-03-19Announced
145.36.53.0/24RADBAmazon EC2 PrefixMAINT-AS165092026-03-18Announced
145.36.53.0/24RIPE—UK-ELSEVIERLTD-1-MNT2026-03-19Announced
145.36.54.0/24RADBAmazon EC2 PrefixMAINT-AS165092026-03-18Announced
145.36.54.0/24RIPE—UK-ELSEVIERLTD-1-MNT2026-03-19Announced
145.36.55.0/24RADBAmazon EC2 PrefixMAINT-AS165092026-03-18Announced
145.36.55.0/24RIPE—UK-ELSEVIERLTD-1-MNT2026-03-19Announced
145.36.56.0/24RADBAmazon EC2 PrefixMAINT-AS165092026-03-18Announced
145.36.56.0/24RIPE—UK-ELSEVIERLTD-1-MNT2026-03-19Announced
145.36.57.0/24RADBAmazon EC2 PrefixMAINT-AS165092026-03-18Announced
145.36.57.0/24RIPE—UK-ELSEVIERLTD-1-MNT2026-03-19Announced
145.36.58.0/24RADBAmazon EC2 PrefixMAINT-AS165092026-03-18Announced
145.36.58.0/24RIPE—UK-ELSEVIERLTD-1-MNT2026-03-19Announced
145.36.59.0/24RADBAmazon EC2 PrefixMAINT-AS165092026-03-18Announced
145.36.59.0/24RIPE—UK-ELSEVIERLTD-1-MNT2026-03-19Announced
198.176.121.0/24ARINRELX inc.MNT-REEDE-22026-07-09Announced
198.176.121.0/24RADBAmazon EC2 PrefixMAINT-AS165092026-07-13Announced
198.176.123.0/24ARINELSMNT-REEDE-22026-07-09Announced
198.176.123.0/24RADBAmazon EC2 PrefixMAINT-AS165092026-07-10Announced
198.176.124.0/24ARINRELX inc.MNT-REEDE-22026-07-09Announced
198.176.124.0/24RADBAmazon EC2 PrefixMAINT-AS165092026-07-14Announced
198.176.126.0/24ARINRELX inc.MNT-REEDE-22026-07-09Announced
198.176.126.0/24RADBAmazon EC2 PrefixMAINT-AS165092026-07-14Announced

IRR

AS-sets

The as-set is what upstreams expand to build this network's customer filter. Sets that list AS33820 directly show who expects to carry it.

AS-setWhereRelationship
AS-BTGB-CUSTRIPELists AS33820 as a direct member
AS-EXPEREORIPELists AS33820 as a direct member
AS-IIJRADBLists AS33820 as a direct member
AS-KDDCUSTOMER2RADBLists AS33820 as a direct member
AS-TRANSROUTE-SPECRIPELists AS33820 as a direct member
AS-UNITAS-CUSTOMERSRADBLists AS33820 as a direct member
AS16509:AS-AMAZON-BYO-EU-WEST-1ARINLists AS33820 as a direct member
AS2497:AS-IIJRADBLists AS33820 as a direct member
AS8220:AS-COLTNLRIPELists AS33820 as a direct member

RPKI from rpki-client, validated 2026-10-21 12:00 UTC. IRR from ARIN, RADB, RIPE, ALTDB, APNIC, LACNIC, NTTCOM, AFRINIC, collected 2026-10-21. Cross-check on bgp.he.net.