I'm trying to find out what the default DHCP ranges are for common routers. Does anyone know?

3 Answers

They will only be within

 10.0.0.0 - 10.255.255.255 (10/8 prefix) 172.16.0.0 - 172.31.255.255 (172.16/12 prefix) 192.168.0.0 - 192.168.255.255 (192.168/16 prefix)

And that's not just the defaults, that's all you can set them to too. Those are the 3 private IP ranges. As specified by RFC 1918

Now, as far as what is common. That could change in future. But from what i've seen, the 192.168/16 range is most common.

Second to that is the 10/8 range. I've seen that too, as you have. It's not uncommon

And I've never seen a router set to use anything on 172.16/12 but they could.

4

The vast majority are set to 192.168.1/24. Additionally, some also default to 192.168.0/24 and then there are a very small number that default to 10.1.1/24 or 10.0.0/24.

(The final octet of the gateway IP {the router's IP address} is almost always .1, although I've seen a few that were defaulted to .254 over the years.)

3

Here is a list which I compiled for

Mostly culled from

 var commonDefaults = { // used by... "cellspot.router": "T-Mobile (ASUS)", "10.0.0.1": "Cisco, D-Link, Sitecom, SMC", "10.0.0.2": "Belkin, Billion, Cisco, D-Link, Siemens, Zoom, Zyxel", "10.0.0.138": "2Wire, Huawei, NetComm, Siemens, SpeedTouch, Zoom, Zyxel", "10.0.1.1": "Apple", // no HTTP "10.0.10.1": "SMC", "10.1.1.1": "Belkin, D-Link", "10.10.1.1": "Asus", "10.90.90.90": "D-Link", "172.16.0.1": "", "172.16.1.1": "", "192.168.0.1": "2Wire, Actiontec, D-Link, Eminent, Huawei, LevelOne, Linksys, Netgear, Planet, Senao, Siemens, Sitecom, SMC, Tenda, Thomson, TP-Link, Trendnet, ZTE, Zyxel", "192.168.0.3": "Sonicwall", "192.168.0.10": "D-Link", "192.168.0.30": "Cisco, D-Link, Trendnet", "192.168.0.50": "Cisco, D-Link", "192.168.0.100": "Trendnet", "192.168.0.101": "D-Link", "192.168.0.277": "Netgear", "192.168.0.254": "TP-Link", "192.168.1.1": "2Wire, 3Com, Actiontec, Airlink, Asus, Aztech, Belkin, Buffalo, Dell, Cisco, D-Link, Eminent, Huawei, Linksys, NetComm, Planet, Repotec, Siemens, SMC, Tenda, TP-Link, Trendnet, USR, Zoom, ZTE, Zyxel, Motorola, Planet, Repotec", "192.168.1.10": "Linksys", "192.168.1.99": "Linksys", "192.168.1.100": "Trendnet", "192.169.1.200": "Hawking", "192.168.1.210": "Linksys", "192.168.1.254": "2Wire, Asus, Aztech, Billion, D-Link, Gigabyte, Hawking, Linksys, Motorola, MSI, Netopia, Planet, Siemens, Sitecom, SpeedTouch, Thomson, Trendnet, Zoom, Zyxel", "192.168.2.1": "Actiontec, Airlink, Airlive, Airties, Asus, Aztech, Belkin, Edimax, Linksys, Microsoft, Siemens, SMC, Trendnet, USR, Zoom, ZTE, Zyxel", "192.168.2.254": "ZTE", "192.168.3.1": "Amped, Huawei", "192.168.4.1": "Zoom, Zyxel", "192.168.8.1": "Eminent, Huawei", "192.168.10.1": "3Com, Motorola, Repotec, Trendnet, Zoom, Zyxel", "192.168.10.10": "Trendnet", "192.168.10.50": "NetComm", "192.168.10.100": "Trendnet", "192.168.11.1": "Buffalo", "192.168.15.1": "D-Link: Linksys: Motorola: Sweex", "192.168.16.1": "Linksys: Repotec", "192.168.20.1": "Motorola: NetComm", "192.168.29.1": "Asus", "192.168.30.1": "Motorola", "192.168.50.1": "Sweex", "192.168.55.1": "Sweex", "192.168.62.1": "Motorola", "192.168.100.1": "Motorola, Huawei, Thomson", "192.168.100.100": "ZTE", "192.168.102.1": "Motorola", "192.168.123.254": "LevelOne, Repotec, Sitecom, USR", "192.168.168.168": "Sonicwall", "192.168.223.100": "Trendnet", "192.168.251.1": "Sweex", "192.168.254.254": "Actiontec, Aztech, D-Link, Siemens, Zyxel" };

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