$ query “AS16637” --type=asn → 1 result(s)

AS16637 — MTNNS-AS

MTN SA

AS16637 is a major transit provider registered to MTN SA, based in South Africa. The network announces an impressive 3.7 million IPv4 addresses, including a /12. Supports IPv6.

  • Top 5% — Top 5% of all autonomous systems by reach and degree
  • #6 in South Africa — Top 10 by reach within country

Basic Information

Country
🇿🇦 South Africa
Category
Internet Service Provider
Network Role
Major Transit
Data Origin
Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
Last Changed
March 04, 2026
Last Seen
March 04, 2026

Prefix Summary

IPv4 Prefixes (raw / aggregated)
140 / 36
IPv6 Prefixes (raw / aggregated)
3 / 3
IPv4 Addresses
3 749 120
Largest IPv4 Prefix
/12 (1 048 576 addresses)
Largest IPv6 Prefix
/32
Geolocated Countries
🇿🇦 ZA (49 IPs), 🇳🇦 NA (1 IPs), 🇧🇼 BW (2 IPs), 🇦🇴 AO, 🇺🇸 US
Prefix Changed
March 04, 2026

Reputation

Reputation
Good — 10 flagged IPs out of 3 749 120 total (0.00%)
Open Proxies
3 known open proxies in this network

Connectivity Summary

Upstream Providers
10 upstream autonomous systems providing transit
Peers
180 autonomous systems exchanging traffic without transit fees
Downstream Customers
52 downstream autonomous systems buying transit
Degree
245 unique BGP neighbors (providers + customers + peers)
Reach
35 182 — customer cone size measuring network influence
Degree Rank
#529
Reach Rank
#152
Country Rank
#6

Upstream Providers (10)

  • AS6939 — HURRICANE
  • AS174 — COGENT-174 (Tier-1 transit)
  • AS3356 — LEVEL3 (Tier-1 transit)
  • AS1299 — TWELVE99 (Tier-1 transit)
  • AS37100 — SEACOM-AS
  • AS3741 — NTT-DATA-INC
  • AS6762 — SEABONE-NET (Tier-1 transit)
  • AS5511 — OPENTRANSIT (Tier-1 transit)
  • AS12956 — TELXIUS (Tier-1 transit)
  • AS19711 — SWAZINET

Prefix Lists

IPv4 Prefixes (140 total)

  • 41.112.0.0/12 (1 048 576 addresses)
  • 105.208.0.0/12 (1 048 576 addresses)
  • 197.64.0.0/12 (1 048 576 addresses)
  • 105.236.0.0/15 (131 072 addresses)
  • 196.30.0.0/15 (131 072 addresses)
  • 41.181.0.0/16 (65 536 addresses)
  • 41.195.0.0/16 (65 536 addresses)
  • 196.7.0.0/16 (65 536 addresses)
  • 66.8.0.0/17 (32 768 addresses)
  • 41.208.0.0/18 (16 384 addresses)
  • 155.235.64.0/18 (16 384 addresses)
  • 196.22.64.0/18 (16 384 addresses)
  • 196.47.0.0/18 (16 384 addresses)
  • 196.41.160.0/19 (8 192 addresses)
  • 196.44.0.0/19 (8 192 addresses)
  • 209.212.96.0/19 (8 192 addresses)
  • 213.193.48.0/20 (4 096 addresses)
  • 155.235.232.0/21 (2 048 addresses)
  • 196.11.232.0/21 (2 048 addresses)
  • 196.61.208.0/21 (2 048 addresses)
  • 213.193.40.0/21 (2 048 addresses)
  • 105.177.0.0/22 (1 024 addresses)
  • 155.235.224.0/22 (1 024 addresses)
  • 155.235.240.0/22 (1 024 addresses)
  • 196.4.88.0/22 (1 024 addresses)
  • 196.13.228.0/22 (1 024 addresses)
  • 102.213.140.0/23 (512 addresses)
  • 105.177.10.0/23 (512 addresses)
  • 105.177.12.0/23 (512 addresses)
  • 105.177.22.0/23 (512 addresses)
  • 105.177.32.0/23 (512 addresses)
  • 196.4.92.0/23 (512 addresses)
  • 196.11.56.0/23 (512 addresses)
  • 165.125.179.0/24 (256 addresses)
  • 196.3.110.0/24 (256 addresses)
  • 196.4.87.0/24 (256 addresses)

IPv6 Prefixes (3 total)

  • 2001:4218::/32
  • 2001:4260::/32
  • 2c0f:fb08::/32