Routing security
AS37133 airtel-tz-as
Unclassified ARIN Cable/DSL/ISP
Announcements
What this network originates
Every prefix observed with AS37133 as its origin, checked against RPKI and the IRR. Problems sort first.
| Prefix | RPKI | IRR | Vantage points |
|---|---|---|---|
| 197.158.192.0/20 | No ROA | IRR other origin | 32 |
| 197.158.208.0/20 | No ROA | IRR other origin | 33 |
| 197.158.224.0/20 | No ROA | IRR other origin | 33 |
| 197.158.245.0/24 | No ROA | No IRR | 6 |
| 197.158.248.0/23 | No ROA | IRR other origin | 33 |
| 197.158.250.0/23 | No ROA | IRR other origin | 33 |
| 197.158.253.0/24 | No ROA | No IRR | 1 |
| 197.158.255.0/24 | No ROA | IRR other origin | 25 |
| 2c0f:f2f8::/32 | No ROA | IRR | 34 |
| 41.75.208.0/20 | No ROA | IRR | 53 |
| 41.75.208.0/23 | No ROA | IRR covering | 53 |
| 41.75.210.0/23 | No ROA | IRR covering | 53 |
| 41.75.212.0/23 | No ROA | IRR covering | 52 |
| 41.75.214.0/23 | No ROA | IRR covering | 53 |
| 41.75.214.0/24 | No ROA | IRR covering | 53 |
| 41.75.216.0/22 | No ROA | IRR covering | 53 |
| 41.75.218.0/24 | No ROA | IRR covering | 53 |
| 41.75.219.0/24 | No ROA | IRR covering | 53 |
| 41.75.220.0/22 | No ROA | IRR covering | 53 |
| 41.75.220.0/24 | No ROA | IRR covering | 53 |
| 41.75.221.0/24 | No ROA | IRR covering | 53 |
| 41.75.222.0/24 | No ROA | IRR covering | 53 |
| 156.156.66.0/24 | No ROA | IRR covering | 53 |
| 156.156.68.0/23 | No ROA | IRR covering | 53 |
| 156.156.70.0/24 | No ROA | IRR covering | 53 |
| 156.156.94.0/24 | No ROA | IRR covering | 53 |
| 156.156.128.0/19 | No ROA | IRR covering | 53 |
| 156.158.0.0/17 | No ROA | IRR covering | 53 |
| 196.46.121.0/24 | No ROA | IRR covering | 53 |
| 196.46.122.0/24 | No ROA | IRR covering | 53 |
| 196.46.123.0/24 | No ROA | IRR covering | 53 |
| 197.186.0.0/24 | No ROA | IRR covering | 53 |
| 197.186.1.0/24 | No ROA | IRR covering | 53 |
| 197.186.2.0/24 | No ROA | IRR covering | 53 |
| 197.186.3.0/24 | No ROA | IRR covering | 53 |
| 197.186.4.0/24 | No ROA | IRR covering | 53 |
| 197.186.5.0/24 | No ROA | IRR covering | 53 |
| 197.186.6.0/23 | No ROA | IRR covering | 51 |
| 197.186.8.0/23 | No ROA | IRR covering | 51 |
| 197.186.10.0/24 | No ROA | IRR covering | 53 |
| 197.186.15.0/24 | No ROA | IRR covering | 53 |
| 197.186.16.0/24 | No ROA | IRR covering | 53 |
| 197.186.17.0/24 | No ROA | IRR covering | 53 |
| 197.186.18.0/24 | No ROA | IRR covering | 53 |
| 197.186.19.0/24 | No ROA | IRR covering | 53 |
| 197.186.25.0/24 | No ROA | IRR covering | 53 |
| 197.186.26.0/23 | No ROA | IRR covering | 51 |
| 197.186.28.0/22 | No ROA | IRR covering | 52 |
| 197.186.32.0/24 | No ROA | IRR covering | 53 |
| 197.186.33.0/24 | No ROA | IRR covering | 53 |
| 197.186.34.0/24 | No ROA | IRR covering | 53 |
| 197.186.37.0/24 | No ROA | IRR covering | 53 |
| 197.186.38.0/24 | No ROA | IRR covering | 53 |
| 197.186.39.0/24 | No ROA | IRR covering | 53 |
| 197.186.40.0/24 | No ROA | IRR covering | 53 |
| 197.186.41.0/24 | No ROA | IRR covering | 53 |
| 197.186.42.0/24 | No ROA | IRR covering | 53 |
| 197.186.43.0/24 | No ROA | IRR covering | 53 |
| 197.186.44.0/24 | No ROA | IRR covering | 53 |
| 197.186.45.0/24 | No ROA | IRR covering | 53 |
| 197.186.46.0/24 | No ROA | IRR covering | 53 |
| 197.186.47.0/24 | No ROA | IRR covering | 53 |
| 197.186.48.0/24 | No ROA | IRR covering | 53 |
| 197.186.52.0/24 | No ROA | IRR covering | 53 |
| 197.186.53.0/24 | No ROA | IRR covering | 53 |
| 197.186.54.0/24 | No ROA | IRR covering | 53 |
| 197.186.55.0/24 | No ROA | IRR covering | 53 |
| 197.186.56.0/24 | No ROA | IRR covering | 53 |
| 197.186.57.0/24 | No ROA | IRR covering | 53 |
| 197.186.58.0/24 | No ROA | IRR covering | 53 |
| 197.186.59.0/24 | No ROA | IRR covering | 53 |
| 197.186.60.0/24 | No ROA | IRR covering | 53 |
| 197.186.61.0/24 | No ROA | IRR covering | 53 |
| 197.186.62.0/24 | No ROA | IRR covering | 53 |
| 197.186.63.0/24 | No ROA | IRR covering | 53 |
| 197.186.64.0/24 | No ROA | IRR covering | 53 |
| 197.186.65.0/24 | No ROA | IRR covering | 53 |
| 197.186.66.0/23 | No ROA | IRR covering | 51 |
| 197.186.68.0/22 | No ROA | IRR covering | 51 |
| 197.186.72.0/21 | No ROA | IRR covering | 51 |
| 197.186.80.0/24 | No ROA | IRR covering | 53 |
RPKI · ROAs
Route origin authorisations
Signed statements by address holders that AS37133 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 AS37133 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 |
|---|---|---|---|---|---|
| 105.234.0.0/16 | AFRINIC | Airtel Malawi Prefix | CELTEL-MNT | 2018-07-10 | Not announced |
| 156.156.0.0/14 | AFRINIC | Route to Airtel TZ | CELTEL-MNT | 2018-10-15 | Not announced |
| 196.46.120.0/22 | AFRINIC | Route to Airtel TZ | CELTEL-MNT | 2018-10-15 | Not announced |
| 197.152.0.0/16 | AFRINIC | Route to Airtel TZ | CELTEL-MNT | 2018-10-15 | Not announced |
| 197.186.0.0/15 | AFRINIC | Route to Airtel TZ | CELTEL-MNT | 2018-10-15 | Not announced |
| 41.75.208.0/20 | AFRINIC | Route to Airtel TZ | CELTEL-MNT | 2018-10-15 | Announced |
| 2c0f:f2f8::/32 | AFRINIC | Route to Airtel TZ | CELTEL-MNT | 2018-10-15 | Announced |
IRR
AS-sets
The as-set is what upstreams expand to build this network's customer filter. Sets that list AS37133 directly show who expects to carry it.
| AS-set | Where | Relationship |
|---|---|---|
AS-327708 | AFRINIC | Lists AS37133 as a direct member |
AS-36926 | AFRINIC | Lists AS37133 as a direct member |
AS-37133 | AFRINIC | Lists AS37133 as a direct member |
AS-37133 | RIPE | Lists AS37133 as a direct member |
AS-37662 | AFRINIC | Lists AS37133 as a direct member |
AS-AIRTELAFRICA-OPCO | AFRINIC | Lists AS37133 as a direct member |
AS-AS36926 | AFRINIC | Lists AS37133 as a direct member |
AS-BCS37273 | AFRINIC | Lists AS37133 as a direct member |
AS-BCS37273 | RIPE | Lists AS37133 as a direct member |
AS-GWCOMMS | RIPE | Lists AS37133 as a direct member |
AS-HURRICANE | RADB | Lists AS37133 as a direct member |
AS-HURRICANEV6 | RADB | Lists AS37133 as a direct member |
AS-LIQUID | RIPE | Lists AS37133 as a direct member |
AS-LIQUID-EXT | RIPE | Lists AS37133 as a direct member |
AS-TMNET-CUSTOMERS | RADB | Lists AS37133 as a direct member |
AS-TRANSROUTE-SPEC | RIPE | Lists AS37133 as a direct member |
AS-WANANCHIGROUP | AFRINIC | Lists AS37133 as a direct member |
AS-WIOCC-AIRTEL | AFRINIC | Lists AS37133 as a direct member |
AS198949:AS-SD | RADB | Lists AS37133 as a direct member |
AS33791:AS-TIX-RS-PEERS | AFRINIC | Lists AS37133 as a direct member |
AS37710:AS-AIXP-RS-PEERS | AFRINIC | Lists AS37133 as a direct member |
AS37769:AS-MIXP-RS-PEERS | AFRINIC | Lists AS37133 as a direct member |
AS37777:AS-ZIXP-RS-PEERS | AFRINIC | Lists AS37133 as a direct member |
AS37778:AS-DIXP-RS-PEERS | AFRINIC | Lists AS37133 as a direct member |
AS37779:AS-MBIXP-RS-PEERS | AFRINIC | Lists AS37133 as a direct member |
AS9498:AS-BHARTI-IN | APNIC | Lists AS37133 as a direct member |
RPKI from rpki-client, validated 2026-10-13 12:16 UTC. IRR from ARIN, RADB, RIPE, ALTDB, APNIC, LACNIC, NTTCOM, AFRINIC, collected 2026-10-13. Cross-check on bgp.he.net.