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AS37133

AS37133 is Airtel Tanzania.

Last updated 5 Oct 2026 from DB-IP ASN Lite (2026-10-01) and RIR statistics (27 Oct 2026)

Short answer

AS37133 belongs to Airtel Tanzania. DB-IP Lite attributes 64,512 IPv4 addresses in 13 ranges and 1 IPv6 ranges to it, all or nearly all of the IPv4 space in Tanzania. The number is registered with AFRINIC in Tanzania on 25 Aug 2009.

Facts for AS37133
Operator (DB-IP)Airtel Tanzania
IPv4 addresses64,512
IPv4 ranges13
IPv6 ranges1
RegistryAFRINIC
Registered25 Aug 2009
Registry countryTanzania (TZ)

Does it publish a geofeed?

We haven’t checked this network’s registry records for a geofeed yet. The Truth Check looks for one live for any address you test.

Shared addresses (CGNAT)

Airtel Tanzania hasn’t been documented as using carrier-grade NAT in a source we could check. To see whether your own connection is behind it, compare your router’s address on the CGNAT check.

IPv6

DB-IP lists 1 IPv6 ranges for AS37133, so customers can get IPv6 addresses, which databases place separately from IPv4.

Where its IPv4 space is used, according to DB-IP

TZ100%

Share of the network’s IPv4 addresses by DB-IP Country Lite. IP Geolocation by DB-IP.

IP ranges

RangeAs CIDRAddresses
41.75.208.0 – 41.75.223.25541.75.208.0/204,096
104.22.74.0 – 104.22.74.255104.22.74.0/24256
156.156.66.0 – 156.156.66.255156.156.66.0/24256
156.156.68.0 – 156.156.70.255156.156.68.0/23, 156.156.70.0/24768
156.156.94.0 – 156.156.94.255156.156.94.0/24256
156.156.128.0 – 156.156.159.255156.156.128.0/198,192
156.158.0.0 – 156.158.127.255156.158.0.0/1732,768
196.46.121.0 – 196.46.123.255196.46.121.0/24, 196.46.122.0/23768
197.186.0.0 – 197.186.10.255197.186.0.0/21, 197.186.8.0/23 …2,816
197.186.15.0 – 197.186.19.255197.186.15.0/24, 197.186.16.0/221,280
197.186.25.0 – 197.186.34.255197.186.25.0/24, 197.186.26.0/23 …2,560
197.186.37.0 – 197.186.48.255197.186.37.0/24, 197.186.38.0/23 …3,072
197.186.52.0 – 197.186.80.255197.186.52.0/22, 197.186.56.0/21 …7,424
2c0f:f2f8:: – 2c0f:f2f8:ffff:ffff:ffff:ffff:ffff:ffff2c0f:f2f8::/32IPv6
Showing 13 of 13 IPv4 and 1 of 1 IPv6 ranges All ranges (CSV)

IP Geolocation by DB-IP, ASN Lite, CC BY 4.0.

Using an address from this network? See which sources agree on where it is.

Sources

  1. DB-IP IP to ASN Lite (CC BY 4.0) · checked 5 Oct 2026
  2. NRO RIR delegated-extended statistics · checked 28 Oct 2026