AS37133 Airtel Tanzania - Airtel Tanzania
🇹🇿Org handle: F3689F5A
AFRINICallocated
Announced Prefixes (BGP)
124total
123 IPv41 IPv6
IPv4 Addresses
Allocated (RIR)4,352
Announced (BGP)96,000
IPv6 Addresses
Allocated (RIR)7.9×10²⁸
Announced (BGP)7.9×10²⁸
Routing hygiene
Score 53/100 · High riskRPKI ROA coverage
0%
no RPKI invalid prefixes
IRR route objects
80.6%
24 prefixes registered for another origin
Hijack signals
0
0 announced against others' ROAs, 0 own announced by others
Upstreams
2
diversity 2/100
- 100% of announced prefixes (124 of 124) have no valid ROA
- 23 prefixes registered in IRR route objects for another active network and not authorized by a ROA
- Routes concentrated on one upstream (99% of routes)
- 19% of announced prefixes (24 of 124) have no IRR route object for this ASN
Based on 124 announced prefixes, updated daily (2026-10-23). How the score works · RPKI explained
Listed on the threat map (2026-10-23)
Large hosting providers appear because attackers rent their servers, not necessarily because of the operator.
Announced Prefixes
(BGP)124|
Prefix | RPKI | IRR | Last Seen |
|---|---|---|---|
| No ROA | AFRINIC | 2026-10-26 | |
| No ROA | - | 2026-10-26 | |
| No ROA | - | 2026-10-26 | |
| No ROA | - | 2026-10-26 | |
| No ROA | - | 2026-10-26 | |
| No ROA | - | 2026-10-26 | |
| No ROA | - | 2026-10-26 | |
| No ROA | - | 2026-10-26 | |
41.75.218.0/24MOAS | No ROA | - | 2026-10-26 |
| No ROA | - | 2026-10-26 |
1-10 of 124
1 / 13
Allocated Prefixes
(RIR)3Prefix | Country | RIR | Status |
|---|---|---|---|
| 41.75.208.0/20 | 🇹🇿 TZ | AFRINIC | allocated |
| 196.46.121.0/24 | 🇹🇿 TZ | AFRINIC | assigned |
| 2c0f:f2f8::/32 | 🇹🇿 TZ | AFRINIC | allocated |
All 124 announced prefixes of AS37133 →
Downstream Customers(1)
| ASN | Name |
|---|---|
| AS14789 | 🇺🇸CLOUDFLARENET - Cloudflare, Inc. |
BGP Neighbours
(seen in AS paths)Upstreams (2)
Networks AS37133 hands its own prefixes to: transit providers, or peers at an exchange.
Downstreams (14)
Networks whose own prefixes AS37133 passes on: usually its customers.
- AS37182Tanzania Education And Research Network Tanzania Education And Research Network33
- AS327795E Government Authority E Government Authority17
- AS32860Cats Net Limited Cats Net Limited5
- AS37349Aptus Solutions Aptus Solutions4
- AS327859Capital Technologies Capital Technologies4
- AS36909Habari Node Public Limited Habari Node Public Limited3
- AS329647SPRINT TANZANIA LIMITED SPRINT TANZANIA LIMITED3
- AS223542
- AS328700Tanzania Internet Service Providers Association TISPA Tanzania Internet Service Providers Association2
- AS14789Cloudflare1
- AS37013Satcom Networks Africa Satcom Networks Africa1
- AS63293Facebook1
- AS328075Gadgetronix.Net1
- AS329677Telxer Enterprise Limited Telxer Enterprise Limited1
External Links
Learn more
- What is an ASN?Autonomous systems, ASN ranges and how they are assigned
- RPKI and route origin validationWhat the RPKI badges on the prefix list mean
- How to run an ASPA checkVerify the upstream providers listed above
- IPv4 transfers in the AFRINIC regionMonthly volume and the latest registry transfers
- ASN data in AI agents and SIEMMCP server and API integrations
API
Open https://api.ipctl.io/v1/asn/37133Returns ASN details, announced prefixes, and BGP routing data.
curl -s "https://api.ipctl.io/v1/asn/37133" | jq