asn.dev

Routing security

AS18438 BROWNB

Unclassified ARIN

RPKI valid 15% 3 of 20 announcements
RPKI invalid 0 none
No ROA 17 not covered by any ROA
IRR registered 90% 2 missing · 0 other origin
ROAs 3 authorising this AS

Announcements

What this network originates

20 observed

Every prefix observed with AS18438 as its origin, checked against RPKI and the IRR. Problems sort first.

PrefixRPKIIRRVantage points
204.136.16.0/24No ROANo IRR51
204.136.20.0/24No ROANo IRR52
192.200.1.0/24No ROAIRR51
192.200.2.0/24No ROAIRR51
192.200.3.0/24No ROAIRR51
192.200.5.0/24No ROAIRR51
192.200.6.0/24No ROAIRR51
192.200.7.0/24No ROAIRR51
192.200.8.0/24No ROAIRR51
204.136.19.0/24No ROAIRR52
204.136.23.0/24No ROAIRR52
204.136.24.0/24No ROAIRR52
204.136.25.0/24No ROAIRR52
204.136.26.0/24No ROAIRR51
204.136.27.0/24No ROAIRR51
204.136.29.0/24No ROAIRR51
204.136.31.0/24No ROAIRR52
192.200.4.0/24RPKI validIRR51
204.136.28.0/24RPKI validIRR57
204.136.30.0/24RPKI validIRR51

RPKI · ROAs

Route origin authorisations

3 ROAs

Signed statements by address holders that AS18438 may originate these prefixes, up to the maximum length shown.

PrefixMax lengthTrust anchor
192.200.4.0/24/24ARIN
204.136.28.0/24/24ARIN
204.136.30.0/24/24ARIN

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

36 objects · 8 not announced

Route objects naming AS18438 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
192.200.2.0/23RADBPNAP-BSN PNAP-BSN-BROWN-2MAINT-AS18282023-11-13Not announced
192.200.4.0/23RADBPNAP-BSN PNAP-BSN-BROWN-2MAINT-AS18282023-11-13Not announced
192.200.6.0/23RADBPNAP-BSN PNAP-BSN-BROWN-2MAINT-AS18282023-11-13Not announced
204.136.17.0/24RADBPNAP-NYM brown-12MAINT-AS18282023-11-13Not announced
204.136.18.0/24RADBPNAP-NYM brown-12MAINT-AS18282023-11-13Not announced
204.136.24.0/23RADBPNAP-NYCMAINT-AS18282023-11-13Not announced
204.136.26.0/23RADBPNAP-NYCMAINT-AS18282023-11-13Not announced
204.136.28.0/23RADBPNAP-NYCMAINT-AS18282023-11-13Not announced
192.200.1.0/24ARINHarborside Financial CenterMNT-BBH-32026-08-05Announced
192.200.1.0/24RADBBBHC route objectMAINT-AS550022023-11-13Announced
192.200.2.0/24ARINHarborside Financial CenterMNT-BBH-32026-08-05Announced
192.200.2.0/24RADBPNAP-NYCMAINT-AS18282023-11-13Announced
192.200.3.0/24RADBPNAP-NYCMAINT-AS18282023-11-13Announced
192.200.4.0/24ARINHarborside Financial CenterMNT-BBH-32026-06-02Announced
192.200.4.0/24RADBPNAP-NYCMAINT-AS18282023-11-13Announced
192.200.5.0/24ARINHarborside Financial CenterMNT-BBH-32026-08-05Announced
192.200.5.0/24RADBPNAP-NYCMAINT-AS18282023-11-13Announced
192.200.6.0/24RADBPNAP-NYCMAINT-AS18282023-11-13Announced
192.200.7.0/24RADBPNAP-NYCMAINT-AS18282023-11-13Announced
192.200.8.0/24ARINHarborside Financial CenterMNT-BBH-32026-08-05Announced
192.200.8.0/24RADBroute object for Brown Brothers Harriman & Co.MAINT-AS550022023-11-13Announced
204.136.19.0/24ALTDBProxy registration to prevent harm from ARIN-NONAUTH shutdownMAINT-AS70342022-04-04Announced
204.136.23.0/24RADBproxy object for ARIN-NONAUTH customer objectsMAINT-AS82202023-11-13Announced
204.136.24.0/24ARINNYISPMNT-BBH2026-09-21Announced
204.136.24.0/24RADBPNAP-BSN PNAP-BSN-BROWN-2MAINT-AS18282023-11-13Announced
204.136.25.0/24RADBPNAP-BSN PNAP-BSN-BROWN-2MAINT-AS18282023-11-13Announced
204.136.26.0/24ARINHarborside Financial CenterMNT-BBH2026-08-05Announced
204.136.26.0/24RADBPNAP-BSN PNAP-BSN-BROWN-2MAINT-AS18282023-11-13Announced
204.136.27.0/24ARINHarborside Financial CenterMNT-BBH2026-07-02Announced
204.136.27.0/24RADBPNAP-BSN PNAP-BSN-BROWN-2MAINT-AS18282023-11-13Announced
204.136.28.0/24ARINBrown Brothers Harriman & Co.MNT-BBH2025-03-13Announced
204.136.28.0/24RADBPNAP-BSN PNAP-BSN-BROWN-2MAINT-AS18282023-11-13Announced
204.136.29.0/24RADBPNAP-BSN PNAP-BSN-BROWN-2MAINT-AS18282023-11-13Announced
204.136.30.0/24ARINBrown Brothers Harriman & Co.MNT-BBH2025-07-16Announced
204.136.30.0/24RADBPNAP-BSN brown routesMAINT-AS18282023-11-13Announced
204.136.31.0/24RADBPNAP-BSN brown routesMAINT-AS18282023-11-13Announced

IRR

AS-sets

The as-set is what upstreams expand to build this network's customer filter. Sets that list AS18438 directly show who expects to carry it.

AS-setWhereRelationship
AS-BROWNBARINLists AS18438 as a direct member
AS-CCFRADBLists AS18438 as a direct member
AS-CCF-TESTRADBLists AS18438 as a direct member
AS-DEFENSERADBLists AS18438 as a direct member
AS-F5RIPELists AS18438 as a direct member
AS-HURRICANERADBLists AS18438 as a direct member
AS-KDDRADBLists AS18438 as a direct member
AS-PNAPBSNRADBLists AS18438 as a direct member
AS-PNAPNYMRADBLists AS18438 as a direct member
AS-RR-BIZRADBLists AS18438 as a direct member
AS-SUNGARDASNAARINLists AS18438 as a direct member
AS-XO-BARINLists AS18438 as a direct member
AS1221:AS-CUSTOMERSAPNICLists AS18438 as a direct member
AS35280:AS-DEFENSERIPELists AS18438 as a direct member
AS35280:AS-F5RIPELists AS18438 as a direct member
AS54004:AS-CUSTOMERSRADBLists AS18438 as a direct member
AS6128:AS-CUSTOMERSARINLists AS18438 as a direct member
AS8220:AS-COLTUKRIPELists AS18438 as a direct member
AS9141:AS-P4NETRIPELists AS18438 as a direct member

RPKI from rpki-client, validated 2026-10-20 11:55 UTC. IRR from ARIN, RADB, RIPE, ALTDB, APNIC, LACNIC, NTTCOM, AFRINIC, collected 2026-10-20. Cross-check on bgp.he.net.