https://bandaancha.eu/foros/sitios-web-no-funcionan-1746626

check_traceroute.py

import sys
import json
import urllib.request


if len(sys.argv) != 2:
    print(f"Usage: {sys.argv[0]} TRACEROUTE_ICMP_MEASUREMENT_ID")
    sys.exit(1)


with urllib.request.urlopen(f"https://atlas.ripe.net/api/v2/measurements/{sys.argv[1]}/results/?format=json") as url:
    resultset = json.load(url)


suspected_bogus = set()


# Detect probes with broken connectivity by checking if last hop didn't reply
# then record the previous hop as suspected bogus node.
for result in sorted(resultset, key=lambda x: x["prb_id"]):
    hops = sorted(result["result"], key=lambda x: -x["hop"])

    if all("x" in r for r in hops[0]["result"]):  # and hops[0]["hop"] == 255?
        print(f"Probe {result['prb_id']}... failed!")

        # Search last
        last_good = None
        for hop in hops:
            broken = ["x" in r for r in hop["result"]]

            if not all(broken):
                last_good = hop
                break

        if last_good:
            last_hop = {r['from'] for r in last_good['result'] if 'from' in r}
            suspected_bogus |= last_hop
            print(f"\tLast hop: {last_hop}")
        else:
            print("\tNo last hop found. Traceroute blocked?")


print(f"\nSuspected bogus nodes: {suspected_bogus}\n")


# Check if probes with working connectivity contain the suspected bogus nodes
# anywhere in the trace.
for result in sorted(resultset, key=lambda x: x["prb_id"]):
    hops = sorted(result["result"], key=lambda x: -x["hop"])

    if not all("x" in r for r in hops[0]["result"]):
        print(f"Probe {result['prb_id']}... ok!")

        for hop in hops:
            hop_ips = {r["from"] for r in hop["result"] if "from" in r}

            if any(ip in suspected_bogus for ip in hop_ips):
                print(f"\tHop {hop['hop']} has suspected bogus node but has connectivity: {hop_ips}")