HanoiLUG.org

Router admin login, default IP addresses, ISP-specific gateway quirks, and the networking concepts behind them.

Independent reference site on a domain that hosted the Hanoi GNU/Linux Users Group from 2011 to 2016. The current editorial work is carried on under that name out of respect for the community's primary-source-first standards, not as a fiction of affiliation. Coverage spans 40+ router brands, 80+ default gateway IPs, 100+ ISP-specific guides, plus the RFC 1918 and NAT fundamentals that explain why the practical guides work the way they do.

Most searched

192.168.1.1

The single most-deployed default gateway across consumer routers worldwide. Login walkthrough, default credentials by brand (admin / admin for most; Netgear uses admin / password; Cisco RV uses cisco / cisco), troubleshooting matrix for the common failure modes (wrong gateway, blocked by firewall, browser typed it as a search query).

Open the 192.168.1.1 reference →

What this site covers

Router Brands

40+ manufacturers across retail and ISP-supplied hardware. Default IP, admin URL, credentials by firmware generation, brand-specific quirks.

IP Addresses

80+ default gateway addresses in common use. Which brands ship which IP, plus the RFC 1918 background and NAT context.

Login URLs

Branded admin URLs like tplinkwifi.net and routerlogin.net. What they mean, when to use the IP address instead.

How-to Guides

36 step-by-step walkthroughs: change Wi-Fi password, port forwarding, factory reset, fix slow internet, secure your network.

Networking Concepts

33 fundamentals: default gateway, DHCP, NAT, RFC 1918, Wi-Fi standards. Why the practical guides work the way they do.

ISP Guides

TM Unifi, BT, Xfinity, Maxis, Jio, and 100+ providers worldwide. The custom firmware overlay each ISP applies to retail hardware.

WiFi Guides

Public WiFi at airports (JFK, LAX, Heathrow), on airlines (United, Delta, Qatar), and at hotel chains (Marriott, Hilton, IHG). Captive portal walkthroughs and free vs paid tiers.

APN Settings

Mobile data APN settings by carrier and country. APN strings, usernames, passwords, MCC/MNC values for manual setup on iPhone and Android when auto-config fails.

Comparisons

85 side-by-side ISP and mobile carrier comparisons across price, speed, coverage, and network technology. Jio vs Airtel, BT vs Sky, Xfinity vs Verizon.

Network Tools

Subnet calculator, MAC address lookup, DNS lookup, port checker, what-is-my-IP. The diagnostic kit on one page.

Speed Test

Open M-Lab NDT7 protocol. No ads, no proprietary scripts, throughput numbers you can verify.

Common gateway IPs

  • 192.168.1.1 Most-deployed default. TP-Link, Linksys, Netgear, ASUS, Cisco, Mercusys, Ubiquiti.
  • 192.168.0.1 D-Link, Tenda, older TP-Link Archer, Belkin, Sky UK, Virgin Media UK.
  • 10.0.0.1 Comcast Xfinity, AT&T, Apple AirPort. RFC 1918 Class A private block.
  • 192.168.1.254 TM Unifi (Malaysia), BT Smart Hub (UK), AT&T. Conflict-avoidance ISP convention.
  • 192.168.8.1 Huawei 4G/5G CPE, mobile broadband.
  • 192.168.50.1 ASUS ZenWiFi mesh, modern RT-AX series. Deliberate split from .1.x.

Browse all 80+ default gateways →

Editorial standards

Every page is researched from primary sources: manufacturer support documentation, ISP technical specifications, IETF RFCs, and where applicable, physical device verification. The full sourcing process is documented in the methodology. No affiliate links, no sponsored placements, no paid product reviews. See the about page for the longer story and the authors page for editor backgrounds.