About Me

I am broadly interested in network measurement research and am actively working on measuring Internet addressing, topology, and connectivity.
Before joining CAIDA in 2019, I completed my Ph.D. in Computer Science from the University of Maryland, where I worked with Neil Spring and Dave Levin. My dissertation focused upon measuring residential Internet connectivity using active probes.

At CAIDA, I am continuing to develop methodologies to detect Internet connectivity outages as part of the IODA project with Alberto Dainotti.

Publications

DynamIPs: Analyzing address assignment practices in IPv4 and IPv6

Ramakrishna Padmanabhan, John P. Rula, Philipp Richter, Stephen D. Strowes, and Alberto Dainotti
In: CoNEXT 2020, Barcelona, Spain (Virtual event)

Trufflehunter: Cache Snooping Rare Domains at Large Public DNS Resolvers

Audrey Randall, Enze Liu, Gautam Akiwate, Ramakrishna Padmanabhan, Geoffrey M. Voelker, Stefan Savage, and Aaron Schulman
In: IMC 2020, Pittsburgh, USA (Virtual event)

Residential Links Under the Weather

Ramakrishna Padmanabhan, Aaron Schulman, Dave Levin, and Neil Spring
In: SIGCOMM 2019, Beijing, China

Geo-locating BGP prefixes

Philipp Winter, Ramakrishna Padmanabhan, Alistair King, and Alberto Dainotti
In: TMA 2019, Paris, France

How to find correlated Internet failures

Ramakrishna Padmanabhan, Aaron Schulman, Alberto Dainotti, Dave Levin, and Neil Spring
In: PAM 2019, Puerto Varas, Chile

Advancing the Art of Internet Edge Outage Detection

Philipp Richter, Ramakrishna Padmanabhan, Neil Spring, Arthur Berger, and David Clark
In: IMC 2018, Boston, USA

Reasons Dynamic Addresses Change

Ramakrishna Padmanabhan, Amogh Dhamdhere, Emile Aben, kc claffy, and Neil Spring
In: IMC 2016, Santa Monica, USA

Timeouts: Beware Surprisingly High Delay

Ramakrishna Padmanabhan, Patrick Owen, Aaron Schulman, and Neil Spring
In: IMC 2015, Tokyo, Japan

UAv6: Alias Resolution in IPv6 Using Unused Addresses

Ramakrishna Padmanabhan, Zhihao Li, Dave Levin, and Neil Spring
In: PAM 2015, New York, USA

Reports and Posters

An analysis of large Internet outages affecting Iranian networks in early 2020

Ramakrishna Padmanabhan, Anant Shah, Nima Fatemi, Alberto Dainotti
Collaborative report, May 2020

Iran’s nation-wide Internet blackout: Measurement data and technical observations

Ramakrishna Padmanabhan, Alberto Dainotti, Nima Fatemi, Arturo Filastò, Maria Xynou, Simone Basso
Collaborative report, Nov 2019

We can find shared IP addresses

Ramakrishna Padmanabhan
APNIC blog, 2018

Reasons Dynamic Addresses Change

Ramakrishna Padmanabhan, Amogh Dhamdhere, Emile Aben, kc claffy, and Neil Spring
RIPE Labs article, 2016

Measuring Last-Mile Internet Reliability During Severe Weather

Ramakrishna Padmanabhan, Ramakrishnan Sundara Raman, Reethika Ramesh, Aaron Schulman, Dave Levin, and Neil Spring
In: IMC 2017, London, UK

Service

  • TPC member, Internet Measurement Conference (2019)

  • TPC member, Passive and Active Measurement Conference (2018, 2019, 2020, 2021)

See Also:

Blog