AS19355 San Mateo Regional Network, Inc.

SMRN-NET - San Mateo Regional Network, Inc. · registered in the United States

IPv4 addresses4,60810 prefixes · <0.001% of announced IPv4

Rank in United States#4,249largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#14,181of 79,396 networks with IPv4

IPv61 x /32 (65,536 x /48)16 prefixes

CountryUnited States18,679 ASNs registered there

Open AS19355 in ASN lookup Look up an IP in this network (198.180.184.1) All networks in United States

IPv4 prefixes

All 10 prefixes, in address order.

198.180.184.0/24
199.181.122.0/23
209.234.96.0/23
209.234.98.0/23
209.234.100.0/22
209.234.104.0/24
209.234.106.0/23
209.234.108.0/23
209.234.110.0/24
209.234.111.0/24

IPv6 prefixes

All 16 prefixes.

2607:ffa0::/47
2607:ffa0:2::/47
2607:ffa0:4::/46
2607:ffa0:8::/45
2607:ffa0:10::/44
2607:ffa0:20::/43
2607:ffa0:40::/42
2607:ffa0:80::/41
2607:ffa0:100::/40
2607:ffa0:200::/39
2607:ffa0:400::/38
2607:ffa0:800::/37
2607:ffa0:1000::/36
2607:ffa0:2000::/35
2607:ffa0:4000::/34
2607:ffa0:8000::/33

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IP-to-ASN data: iptoasn.com (public domain). Snapshot downloaded 2026-11-11, refreshed daily. Ranges are what each network announces in BGP, not registry allocations. Data sources