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AS8151

AS8151 is Telmex (Uninet)’s network.

Last updated 3 Nov 2026 from DB-IP ASN Lite (2026-11-01) and RIR statistics (4 Nov 2026)

Short answer

AS8151 belongs to Uninet S.A. de C.V.. DB-IP Lite attributes 13,494,272 IPv4 addresses in 368 ranges and 59 IPv6 ranges to it, all or nearly all of the IPv4 space in Mexico. The number is registered with LACNIC in Mexico on 29 Apr 1997.

Facts for AS8151
Operator (DB-IP)Uninet S.A. de C.V.
KindHome broadband (curated)
IPv4 addresses13,494,272
IPv4 ranges368
IPv6 ranges59
RegistryLACNIC
Registered29 Apr 1997
Registry countryMexico (MX)

Does it publish a geofeed?

Not for the range we sampled (187.144.224.0 – 187.150.255.255): its registry record, and the record above it, link no RFC 8805 geofeed (checked 2 Nov 2026). Without one, location databases have to estimate where these addresses are used, which is a common reason customers of Telmex (Uninet) see the wrong city. Customers can ask Telmex (Uninet) to publish one; the evidence report drafts that request.

Shared addresses (CGNAT)

Telmex (Uninet) 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 59 IPv6 ranges for AS8151, so customers can get IPv6 addresses, which databases place separately from IPv4.

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

MX100%
US0.12%

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

IP ranges

RangeAs CIDRAddresses
45.144.224.0 – 45.144.224.25545.144.224.0/24256
148.203.163.0 – 148.203.163.255148.203.163.0/24256
148.207.1.0 – 148.207.2.255148.207.1.0/24, 148.207.2.0/24512
148.207.96.0 – 148.207.98.255148.207.96.0/23, 148.207.98.0/24768
148.207.144.0 – 148.207.148.255148.207.144.0/22, 148.207.148.0/241,280
148.207.158.0 – 148.207.159.255148.207.158.0/23512
148.208.144.0 – 148.208.145.255148.208.144.0/23512
148.212.0.0 – 148.212.255.255148.212.0.0/1665,536
148.217.0.0 – 148.217.255.255148.217.0.0/1665,536
148.219.0.0 – 148.219.255.255148.219.0.0/1665,536
148.221.128.0 – 148.221.159.255148.221.128.0/198,192
148.223.0.0 – 148.223.255.255148.223.0.0/1665,536
148.226.195.0 – 148.226.195.255148.226.195.0/24256
148.233.0.0 – 148.233.95.255148.233.0.0/18, 148.233.64.0/1924,576
148.233.128.0 – 148.233.150.255148.233.128.0/20, 148.233.144.0/22 …5,888
148.233.152.0 – 148.233.255.255148.233.152.0/21, 148.233.160.0/19 …26,624
148.235.0.0 – 148.235.191.255148.235.0.0/17, 148.235.128.0/1849,152
148.249.0.0 – 148.249.0.255148.249.0.0/24256
158.122.0.0 – 158.122.31.255158.122.0.0/198,192
158.122.64.0 – 158.122.87.255158.122.64.0/20, 158.122.80.0/216,144
158.122.92.0 – 158.122.135.255158.122.92.0/22, 158.122.96.0/19 …11,264
158.173.133.0 – 158.173.133.255158.173.133.0/24256
159.16.0.0 – 159.16.3.255159.16.0.0/221,024
168.255.101.0 – 168.255.101.255168.255.101.0/24256
168.255.120.0 – 168.255.122.255168.255.120.0/23, 168.255.122.0/24768
168.255.153.0 – 168.255.153.255168.255.153.0/24256
168.255.201.0 – 168.255.201.255168.255.201.0/24256
168.255.203.0 – 168.255.203.255168.255.203.0/24256
168.255.220.0 – 168.255.220.255168.255.220.0/24256
168.255.251.0 – 168.255.254.255168.255.251.0/24, 168.255.252.0/23 …1,024
187.130.0.0 – 187.132.86.255187.130.0.0/15, 187.132.0.0/18 …153,344
187.132.96.0 – 187.135.113.255187.132.96.0/19, 187.132.128.0/17 …201,216
187.135.128.0 – 187.135.199.255187.135.128.0/18, 187.135.192.0/2118,432
187.135.201.0 – 187.137.125.255187.135.201.0/24, 187.135.202.0/23 …111,872
187.137.128.0 – 187.141.27.255187.137.128.0/17, 187.138.0.0/15 …236,544
187.141.30.0 – 187.141.30.255187.141.30.0/24256
187.141.32.0 – 187.141.41.255187.141.32.0/21, 187.141.40.0/232,560
187.141.43.0 – 187.143.159.255187.141.43.0/24, 187.141.44.0/22 …161,024
187.143.192.0 – 187.150.255.255187.143.192.0/18, 187.144.0.0/14 …475,136
187.151.64.0 – 187.151.75.255187.151.64.0/21, 187.151.72.0/223,072
187.151.96.0 – 187.151.159.255187.151.96.0/19, 187.151.128.0/1916,384
187.152.0.0 – 187.152.31.255187.152.0.0/198,192
187.152.128.0 – 187.153.255.255187.152.128.0/17, 187.153.0.0/1698,304
187.154.96.0 – 187.158.137.255187.154.96.0/19, 187.154.128.0/17 …272,896
187.158.192.0 – 187.158.208.255187.158.192.0/20, 187.158.208.0/244,352
187.158.224.0 – 187.159.15.255187.158.224.0/19, 187.159.0.0/2012,288
187.159.64.0 – 187.159.95.255187.159.64.0/198,192
187.159.128.0 – 187.159.181.255187.159.128.0/19, 187.159.160.0/20 …13,824
187.159.192.0 – 187.159.255.255187.159.192.0/1816,384
187.168.0.0 – 187.172.255.255187.168.0.0/14, 187.172.0.0/16327,680
2001:1208:: – 2001:1208:ffff:ffff:ffff:ffff:ffff:ffff2001:1208::/32IPv6
2801:c4:98:: – 2801:c4:98:ffff:ffff:ffff:ffff:ffff2801:c4:98::/48IPv6
2801:c4:a2:: – 2801:c4:a2:ffff:ffff:ffff:ffff:ffff2801:c4:a2::/48IPv6
2801:c4:a6:: – 2801:c4:a6:ffff:ffff:ffff:ffff:ffff2801:c4:a6::/48IPv6
2801:c4:aa:: – 2801:c4:aa:ffff:ffff:ffff:ffff:ffff2801:c4:aa::/48IPv6
2801:c4:b8:: – 2801:c4:b8:ffff:ffff:ffff:ffff:ffff2801:c4:b8::/48IPv6
2801:c4:235:: – 2801:c4:235:ffff:ffff:ffff:ffff:ffff2801:c4:235::/48IPv6
2806:290:: – 2806:290:ffff:ffff:ffff:ffff:ffff:ffff2806:290::/32IPv6
2806:330:223:: – 2806:330:223:ffff:ffff:ffff:ffff:ffff2806:330:223::/48IPv6
2806:330:1039:: – 2806:330:1039:ffff:ffff:ffff:ffff:ffff2806:330:1039::/48IPv6
2806:1000:: – 2806:1000:ffff:ffff:ffff:ffff:ffff:ffff2806:1000::/32IPv6
2806:1008:: – 2806:1008:ffff:ffff:ffff:ffff:ffff:ffff2806:1008::/32IPv6
2806:1010:: – 2806:1010:ffff:ffff:ffff:ffff:ffff:ffff2806:1010::/32IPv6
2806:1016:: – 2806:1016:ffff:ffff:ffff:ffff:ffff:ffff2806:1016::/32IPv6
2806:1018:: – 2806:1018:ffff:ffff:ffff:ffff:ffff:ffff2806:1018::/32IPv6
2806:101e:: – 2806:101e:ffff:ffff:ffff:ffff:ffff:ffff2806:101e::/32IPv6
2806:1020:: – 2806:1020:1500:ffff:ffff:ffff:ffff:ffff2806:1020::/36IPv6
2806:1020:1502:: – 2806:1020:ffff:ffff:ffff:ffff:ffff:ffff2806:1020:1502::/47IPv6
2806:102e:: – 2806:102e:ffff:ffff:ffff:ffff:ffff:ffff2806:102e::/32IPv6
2806:1030:: – 2806:1030:ffff:ffff:ffff:ffff:ffff:ffff2806:1030::/32IPv6
Showing 50 of 368 IPv4 and 20 of 59 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 3 Nov 2026
  2. NRO RIR delegated-extended statistics · checked 5 Nov 2026