Routing security
AS19512 LYONDELL - Lyondell Chemical Company
Unclassified ARIN
Announcements
What this network originates
Every prefix observed with AS19512 as its origin, checked against RPKI and the IRR. Problems sort first.
| Prefix | RPKI | IRR | Vantage points |
|---|---|---|---|
| 161.16.0.0/24 | No ROA | IRR | 53 |
| 161.16.1.0/24 | No ROA | IRR | 53 |
| 165.249.0.0/24 | No ROA | IRR | 52 |
| 165.249.1.0/24 | No ROA | IRR | 54 |
| 192.84.168.0/24 | No ROA | IRR | 52 |
| 199.91.9.0/24 | No ROA | IRR | 53 |
| 199.91.10.0/24 | No ROA | IRR | 54 |
| 199.91.11.0/24 | No ROA | IRR | 54 |
| 199.91.13.0/24 | No ROA | IRR | 54 |
| 199.91.14.0/24 | No ROA | IRR | 52 |
| 199.102.0.0/24 | No ROA | IRR | 51 |
| 199.102.1.0/24 | No ROA | IRR | 53 |
| 199.102.2.0/24 | No ROA | IRR | 53 |
| 199.102.3.0/24 | No ROA | IRR | 53 |
| 199.102.4.0/24 | No ROA | IRR | 53 |
| 199.102.5.0/24 | No ROA | IRR | 52 |
| 199.102.6.0/24 | No ROA | IRR | 51 |
| 199.102.7.0/24 | No ROA | IRR | 53 |
RPKI · ROAs
Route origin authorisations
Signed statements by address holders that AS19512 may originate these prefixes, up to the maximum length shown.
No ROA names this AS as an authorised origin.
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
Route objects naming AS19512 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.
| Prefix | Source | Description | Maintainer | Changed | Routing |
|---|---|---|---|---|---|
| 12.109.0.0/24 | NTTCOM | Lyondell-Chemical-Company-1 | MAINT-PHONOSCOPE | 2004-12-08 | Not announced |
| 161.16.0.0/21 | NTTCOM | Lyondell-Chemical-Company-2 | MAINT-PHONOSCOPE | 2005-02-23 | Not announced |
| 161.16.0.0/21 | RADB | Lyondell route | MAINT-AS29863 | 2023-11-13 | Not announced |
| 161.16.0.0/23 | RADB | proxy route object for customer SungardAS | MAINT-AS1828 | 2023-11-13 | Not announced |
| 165.249.0.0/21 | NTTCOM | Lyondell-Chemical-Company-3 | MAINT-PHONOSCOPE | 2007-10-15 | Not announced |
| 199.91.8.0/24 | ARIN | 1221 McKinney St | MNT-LYONDE-3 | 2026-01-26 | Not announced |
| 199.91.15.0/24 | RADB | Lyondell | MAINT-AS29863 | 2023-11-13 | Not announced |
| 161.16.0.0/24 | ARIN | 1221 McKinney St | MNT-LYONDE-3 | 2026-03-13 | Announced |
| 161.16.0.0/24 | NTTCOM | Lyondell-Chemical-Company-1 | MAINT-PHONOSCOPE | 2004-12-08 | Announced |
| 161.16.0.0/24 | RADB | AS19512 proxy-registered route by Cogent | MAINT-AS174 | 2023-11-13 | Announced |
| 161.16.1.0/24 | ARIN | 1221 McKinney St | MNT-LYONDE-3 | 2026-03-13 | Announced |
| 165.249.0.0/24 | NTTCOM | Lyondell-Chemical-Company-4 | MAINT-PHONOSCOPE | 2009-12-04 | Announced |
| 165.249.0.0/24 | RADB | Lyondell | MAINT-AS29863 | 2023-11-13 | Announced |
| 165.249.1.0/24 | ARIN | 1221 McKinney St | MNT-LYONDE-3 | 2022-11-16 | Announced |
| 192.84.168.0/24 | NTTCOM | Lyondell-NETWORK-04 | MAINT-PHONOSCOPE | 2010-11-01 | Announced |
| 192.84.168.0/24 | RADB | Lyondell | MAINT-AS29863 | 2023-11-13 | Announced |
| 199.91.9.0/24 | ARIN | ASN and NET owned by Lyondellbasell. | MNT-LYONDE-3 | 2022-04-12 | Announced |
| 199.91.10.0/24 | ARIN | 1221 McKinney St | MNT-LYONDE-3 | 2022-11-16 | Announced |
| 199.91.11.0/24 | ARIN | 1221 McKinney St | MNT-LYONDE-3 | 2022-11-16 | Announced |
| 199.91.13.0/24 | ARIN | 1221 McKinney St | MNT-LYONDE-3 | 2022-11-16 | Announced |
| 199.91.14.0/24 | ARIN | 1221 McKinney St | MNT-LYONDE-3 | 2022-11-16 | Announced |
| 199.91.14.0/24 | RADB | Lyondell | MAINT-AS29863 | 2023-11-13 | Announced |
| 199.102.0.0/24 | ARIN | LyondellBasell | MNT-LYONDE-3 | 2024-10-04 | Announced |
| 199.102.1.0/24 | ARIN | LyondellBasell | MNT-LYONDE-3 | 2024-10-04 | Announced |
| 199.102.2.0/24 | ARIN | ASN and NET owned by Lyondellbasell. | MNT-LYONDE-3 | 2022-04-12 | Announced |
| 199.102.3.0/24 | ARIN | ASN and NET owned by Lyondellbasell. | MNT-LYONDE-3 | 2022-04-12 | Announced |
| 199.102.4.0/24 | RADB | Proxy route | MAINT-AS7545 | 2023-11-13 | Announced |
| 199.102.5.0/24 | RADB | Proxy route | MAINT-AS7545 | 2023-11-13 | Announced |
| 199.102.6.0/24 | ARIN | ASN and NET owned by Lyondellbasell. | MNT-LYONDE-3 | 2022-04-12 | Announced |
| 199.102.7.0/24 | ARIN | ASN and NET owned by Lyondellbasell. | MNT-LYONDE-3 | 2022-04-12 | Announced |
IRR
AS-sets
The as-set is what upstreams expand to build this network's customer filter. Sets that list AS19512 directly show who expects to carry it.
| AS-set | Where | Relationship |
|---|---|---|
AS-DATA393-INV01 | RADB | Lists AS19512 as a direct member |
AS-SGAS-NA-UG | RADB | Lists AS19512 as a direct member |
AS-SUNGARDASNA | ARIN | Lists AS19512 as a direct member |
AS-XO-B | ARIN | Lists AS19512 as a direct member |
AS14127:AS-CUSTOMERS | RADB | Lists AS19512 as a direct member |
AS17762:AS-PEERS | APNIC | Lists AS19512 as a direct member |
AS3491:AS-CUSTOMERS-AP | RADB | Lists AS19512 as a direct member |
AS399589:AS-CONE | RADB | Lists AS19512 as a direct member |
AS7545:AS-TPGN-CUSTOMERS | RADB | Lists AS19512 as a direct member |
AS8220:AS-COLTNL | RIPE | Lists AS19512 as a direct member |
RPKI from rpki-client, validated 2026-11-03 13:02 UTC. IRR from ARIN, RADB, RIPE, ALTDB, APNIC, LACNIC, NTTCOM, AFRINIC, collected 2026-11-03. Cross-check on bgp.he.net.