Country stats for last year of data

For these country-level stats, the most recent test from each client address is examined within aggregated IP blocks (/24 for IPv4 and /40 for IPv6). If the most recent test in an IP block shows spoofing, the IP block is considered to allow spoofing. If ALL clients indicate blocking, the IP block is considered to block spoofing. (It is considered NAT blocking if there are no non-NAT tests found.) If some clients showed spoofing but the most recent tests show blocking (and there's no evidence of a change in blocking policy), then the IP block is considered "inconsistent". On the map, inconsistent results are counted as spoofing for simplicity.

Country	Client IP blocks	Spoofing IP blocks	Blocking IP blocks		Inconsistent IP blocks	Client ASNs	Spoofing ASNs
			Non-NAT	NAT
bra (Brazil)	2423	428 (17.7%)	315 (13.0%)	1662 (68.6%)	18 (0.7%)	475	225 (47.4%)
ind (India)	1367	300 (21.9%)	152 (11.1%)	914 (66.9%)	1 (0.1%)	66	22 (33.3%)
usa (United States)	2570	127 (4.9%)	650 (25.3%)	1792 (69.7%)	1 (0.0%)	314	74 (23.6%)
isr (Israel)	227	71 (31.3%)	73 (32.2%)	83 (36.6%)	0 (0.0%)	14	7 (50.0%)
arg (Argentina)	121	61 (50.4%)	8 (6.6%)	51 (42.1%)	1 (0.8%)	21	8 (38.1%)
egy (Egypt)	143	45 (31.5%)	1 (0.7%)	97 (67.8%)	0 (0.0%)	6	3 (50.0%)
tha (Thailand)	319	37 (11.6%)	15 (4.7%)	267 (83.7%)	0 (0.0%)	24	9 (37.5%)
twn (Taiwan)	203	34 (16.7%)	27 (13.3%)	141 (69.5%)	1 (0.5%)	16	4 (25.0%)
zaf (South Africa)	188	34 (18.1%)	9 (4.8%)	145 (77.1%)	0 (0.0%)	41	12 (29.3%)
are (United Arab Emirates)	63	31 (49.2%)	4 (6.3%)	28 (44.4%)	0 (0.0%)	5	2 (40.0%)
rus (Russian Federation)	273	31 (11.4%)	39 (14.3%)	203 (74.4%)	0 (0.0%)	75	20 (26.7%)
tun (Tunisia)	48	29 (60.4%)	0 (0.0%)	19 (39.6%)	0 (0.0%)	5	1 (20.0%)
ita (Italy)	439	21 (4.8%)	33 (7.5%)	385 (87.7%)	0 (0.0%)	50	14 (28.0%)
pol (Poland)	174	21 (12.1%)	16 (9.2%)	137 (78.7%)	0 (0.0%)	56	14 (25.0%)
vnm (Vietnam)	98	21 (21.4%)	9 (9.2%)	67 (68.4%)	1 (1.0%)	7	4 (57.1%)
tur (Turkey)	611	17 (2.8%)	9 (1.5%)	585 (95.7%)	0 (0.0%)	32	6 (18.8%)
aus (Australia)	470	16 (3.4%)	38 (8.1%)	416 (88.5%)	0 (0.0%)	31	6 (19.4%)
can (Canada)	293	15 (5.1%)	59 (20.1%)	219 (74.7%)	0 (0.0%)	52	11 (21.2%)
nld (Netherlands)	256	15 (5.9%)	77 (30.1%)	163 (63.7%)	1 (0.4%)	64	10 (15.6%)
pak (Pakistan)	82	15 (18.3%)	2 (2.4%)	65 (79.3%)	0 (0.0%)	17	7 (41.2%)
bgd (Bangladesh)	42	14 (33.3%)	4 (9.5%)	24 (57.1%)	0 (0.0%)	23	9 (39.1%)
chn (China)	438	14 (3.2%)	110 (25.1%)	314 (71.7%)	0 (0.0%)	35	10 (28.6%)
cmr (Cameroon)	35	14 (40.0%)	2 (5.7%)	19 (54.3%)	0 (0.0%)	6	5 (83.3%)
kor (South Korea)	247	13 (5.3%)	126 (51.0%)	108 (43.7%)	0 (0.0%)	15	5 (33.3%)
mex (Mexico)	502	12 (2.4%)	30 (6.0%)	459 (91.4%)	1 (0.2%)	26	7 (26.9%)
ago (Angola)	60	11 (18.3%)	1 (1.7%)	48 (80.0%)	0 (0.0%)	6	4 (66.7%)
ken (Kenya)	54	11 (20.4%)	1 (1.9%)	42 (77.8%)	0 (0.0%)	12	7 (58.3%)
swe (Sweden)	135	11 (8.1%)	17 (12.6%)	106 (78.5%)	1 (0.7%)	37	10 (27.0%)
kaz (Kazakhstan)	24	10 (41.7%)	0 (0.0%)	14 (58.3%)	0 (0.0%)	4	1 (25.0%)
uga (Uganda)	21	10 (47.6%)	1 (4.8%)	10 (47.6%)	0 (0.0%)	8	3 (37.5%)
ukr (Ukraine)	64	10 (15.6%)	12 (18.8%)	42 (65.6%)	0 (0.0%)	40	6 (15.0%)
deu (Germany)	1149	9 (0.8%)	262 (22.8%)	878 (76.4%)	0 (0.0%)	76	9 (11.8%)
jpn (Japan)	234	9 (3.8%)	32 (13.7%)	192 (82.1%)	1 (0.4%)	42	9 (21.4%)
bfa (Burkina Faso)	19	8 (42.1%)	2 (10.5%)	9 (47.4%)	0 (0.0%)	5	2 (40.0%)
esp (Spain)	205	8 (3.9%)	17 (8.3%)	180 (87.8%)	0 (0.0%)	29	5 (17.2%)
gbr (United Kingdom)	630	8 (1.3%)	103 (16.3%)	518 (82.2%)	1 (0.2%)	72	7 (9.7%)
idn (Indonesia)	42	8 (19.0%)	6 (14.3%)	28 (66.7%)	0 (0.0%)	18	5 (27.8%)
npl (Nepal)	41	7 (17.1%)	4 (9.8%)	30 (73.2%)	0 (0.0%)	9	3 (33.3%)
hun (Hungary)	155	6 (3.9%)	10 (6.5%)	139 (89.7%)	0 (0.0%)	13	5 (38.5%)
ecu (Ecuador)	43	5 (11.6%)	6 (14.0%)	32 (74.4%)	0 (0.0%)	15	3 (20.0%)
irn (Iran)	183	5 (2.7%)	4 (2.2%)	174 (95.1%)	0 (0.0%)	13	1 (7.7%)
mys (Malaysia)	157	5 (3.2%)	13 (8.3%)	139 (88.5%)	0 (0.0%)	12	4 (33.3%)
phl (Philippines)	137	5 (3.6%)	8 (5.8%)	124 (90.5%)	0 (0.0%)	8	4 (50.0%)
rou (Romania)	108	5 (4.6%)	19 (17.6%)	84 (77.8%)	0 (0.0%)	14	2 (14.3%)
bgr (Bulgaria)	44	4 (9.1%)	3 (6.8%)	37 (84.1%)	0 (0.0%)	19	3 (15.8%)
fra (France)	255	4 (1.6%)	51 (20.0%)	200 (78.4%)	0 (0.0%)	35	3 (8.6%)
hkg (Hong Kong)	93	4 (4.3%)	27 (29.0%)	62 (66.7%)	0 (0.0%)	17	2 (11.8%)
hrv (Croatia)	27	4 (14.8%)	0 (0.0%)	23 (85.2%)	0 (0.0%)	6	3 (50.0%)
ltu (Lithuania)	21	4 (19.0%)	3 (14.3%)	14 (66.7%)	0 (0.0%)	12	4 (33.3%)
mus (Mauritius)	121	4 (3.3%)	3 (2.5%)	114 (94.2%)	0 (0.0%)	13	4 (30.8%)
pry (Paraguay)	8	4 (50.0%)	0 (0.0%)	4 (50.0%)	0 (0.0%)	3	3 (100.0%)
sgp (Singapore)	50	4 (8.0%)	14 (28.0%)	32 (64.0%)	0 (0.0%)	23	4 (17.4%)
svk (Slovak Republic)	28	4 (14.3%)	1 (3.6%)	23 (82.1%)	0 (0.0%)	13	4 (30.8%)
abw (Aruba)	4	3 (75.0%)	1 (25.0%)	0 (0.0%)	0 (0.0%)	2	1 (50.0%)
chl (Chile)	34	3 (8.8%)	3 (8.8%)	28 (82.4%)	0 (0.0%)	12	3 (25.0%)
cri (Costa Rica)	19	3 (15.8%)	0 (0.0%)	16 (84.2%)	0 (0.0%)	10	2 (20.0%)
cze (Czech Republic)	26	3 (11.5%)	0 (0.0%)	23 (88.5%)	0 (0.0%)	19	3 (15.8%)
est (Estonia)	39	3 (7.7%)	6 (15.4%)	30 (76.9%)	0 (0.0%)	10	1 (10.0%)
gha (Ghana)	40	3 (7.5%)	0 (0.0%)	37 (92.5%)	0 (0.0%)	4	2 (50.0%)
hti (Haiti)	7	3 (42.9%)	0 (0.0%)	4 (57.1%)	0 (0.0%)	3	2 (66.7%)
prt (Portugal)	92	3 (3.3%)	15 (16.3%)	74 (80.4%)	0 (0.0%)	11	2 (18.2%)
aut (Austria)	127	2 (1.6%)	8 (6.3%)	117 (92.1%)	0 (0.0%)	20	2 (10.0%)
bih (Bosnia and Herzegovina)	41	2 (4.9%)	2 (4.9%)	37 (90.2%)	0 (0.0%)	4	1 (25.0%)
btn (Bhutan)	11	2 (18.2%)	5 (45.5%)	4 (36.4%)	0 (0.0%)	4	2 (50.0%)
che (Switzerland)	102	2 (2.0%)	18 (17.6%)	82 (80.4%)	0 (0.0%)	27	1 (3.7%)
dnk (Denmark)	28	2 (7.1%)	5 (17.9%)	21 (75.0%)	0 (0.0%)	14	2 (14.3%)
dom (Dominican Republic)	42	2 (4.8%)	0 (0.0%)	40 (95.2%)	0 (0.0%)	6	2 (33.3%)
kwt (Kuwait)	69	2 (2.9%)	2 (2.9%)	65 (94.2%)	0 (0.0%)	4	1 (25.0%)
lux (Luxembourg)	45	2 (4.4%)	6 (13.3%)	37 (82.2%)	0 (0.0%)	3	1 (33.3%)
mda (Moldova, Republic of)	16	2 (12.5%)	0 (0.0%)	14 (87.5%)	0 (0.0%)	6	2 (33.3%)
mdv (Maldives)	14	2 (14.3%)	1 (7.1%)	11 (78.6%)	0 (0.0%)	2	1 (50.0%)
sdn (Sudan)	22	2 (9.1%)	4 (18.2%)	16 (72.7%)	0 (0.0%)	5	1 (20.0%)
tza (Tanzania)	5	2 (40.0%)	0 (0.0%)	3 (60.0%)	0 (0.0%)	4	1 (25.0%)
afg (Afghanistan, Islamic State of)	1	1 (100.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	1	1 (100.0%)
arm (Armenia)	2	1 (50.0%)	0 (0.0%)	1 (50.0%)	0 (0.0%)	2	1 (50.0%)
bel (Belgium)	77	1 (1.3%)	17 (22.1%)	59 (76.6%)	0 (0.0%)	9	1 (11.1%)
ben (Benin)	14	1 (7.1%)	0 (0.0%)	13 (92.9%)	0 (0.0%)	5	1 (20.0%)
bol (Bolivia)	13	1 (7.7%)	3 (23.1%)	9 (69.2%)	0 (0.0%)	2	1 (50.0%)
col (Colombia)	23	1 (4.3%)	2 (8.7%)	20 (87.0%)	0 (0.0%)	14	1 (7.1%)
dza (Algeria)	6	1 (16.7%)	0 (0.0%)	5 (83.3%)	0 (0.0%)	1	1 (100.0%)
gab (Gabon)	1	1 (100.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	1	1 (100.0%)
geo (Georgia)	19	1 (5.3%)	1 (5.3%)	17 (89.5%)	0 (0.0%)	3	1 (33.3%)
gtm (Guatemala)	3	1 (33.3%)	0 (0.0%)	2 (66.7%)	0 (0.0%)	2	1 (50.0%)
irl (Ireland)	42	1 (2.4%)	10 (23.8%)	31 (73.8%)	0 (0.0%)	11	1 (9.1%)
isl (Iceland)	5	1 (20.0%)	2 (40.0%)	2 (40.0%)	0 (0.0%)	3	1 (33.3%)
jor (Jordan)	34	1 (2.9%)	11 (32.4%)	22 (64.7%)	0 (0.0%)	4	1 (25.0%)
mlt (Malta)	3	1 (33.3%)	0 (0.0%)	2 (66.7%)	0 (0.0%)	2	1 (50.0%)
mwi (Malawi)	14	1 (7.1%)	0 (0.0%)	13 (92.9%)	0 (0.0%)	3	1 (33.3%)
nam (Namibia)	10	1 (10.0%)	1 (10.0%)	8 (80.0%)	0 (0.0%)	2	1 (50.0%)
nor (Norway)	39	1 (2.6%)	7 (17.9%)	31 (79.5%)	0 (0.0%)	9	1 (11.1%)
nzl (New Zealand)	118	1 (0.8%)	29 (24.6%)	88 (74.6%)	0 (0.0%)	16	1 (6.3%)
sen (Senegal)	27	1 (3.7%)	0 (0.0%)	26 (96.3%)	0 (0.0%)	2	1 (50.0%)
som (Somalia)	9	1 (11.1%)	1 (11.1%)	6 (66.7%)	1 (11.1%)	3	1 (33.3%)
srb (Serbia)	24	1 (4.2%)	5 (20.8%)	18 (75.0%)	0 (0.0%)	10	1 (10.0%)
tcd (Chad)	6	1 (16.7%)	1 (16.7%)	3 (50.0%)	1 (16.7%)	2	1 (50.0%)
ury (Uruguay)	7	1 (14.3%)	3 (42.9%)	3 (42.9%)	0 (0.0%)	4	1 (25.0%)
alb (Albania)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
and (Andorra, Principality of)	3	0 (0.0%)	1 (33.3%)	2 (66.7%)	0 (0.0%)	3	0 (0.0%)
aze (Azerbaijan)	2	0 (0.0%)	0 (0.0%)	2 (100.0%)	0 (0.0%)	2	0 (0.0%)
bhr (Bahrain)	22	0 (0.0%)	0 (0.0%)	22 (100.0%)	0 (0.0%)	2	0 (0.0%)
blr (Belarus)	46	0 (0.0%)	0 (0.0%)	46 (100.0%)	0 (0.0%)	4	0 (0.0%)
bmu (Bermuda)	3	0 (0.0%)	0 (0.0%)	3 (100.0%)	0 (0.0%)	2	0 (0.0%)
brb (Barbados)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
civ (Ivory Coast (Cote D'Ivoire))	3	0 (0.0%)	0 (0.0%)	3 (100.0%)	0 (0.0%)	2	0 (0.0%)
cod (Congo, The Democratic Republic of the)	3	0 (0.0%)	0 (0.0%)	3 (100.0%)	0 (0.0%)	1	0 (0.0%)
cyp (Cyprus)	17	0 (0.0%)	2 (11.8%)	15 (88.2%)	0 (0.0%)	8	0 (0.0%)
dji (Djibouti)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
eth (Ethiopia)	6	0 (0.0%)	0 (0.0%)	6 (100.0%)	0 (0.0%)	1	0 (0.0%)
fin (Finland)	70	0 (0.0%)	12 (17.1%)	58 (82.9%)	0 (0.0%)	6	0 (0.0%)
gib (Gibraltar)	2	0 (0.0%)	0 (0.0%)	2 (100.0%)	0 (0.0%)	1	0 (0.0%)
gin (Guinea)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
gmb (Gambia)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
grc (Greece)	116	0 (0.0%)	15 (12.9%)	101 (87.1%)	0 (0.0%)	10	0 (0.0%)
gum (Guam [US])	2	0 (0.0%)	0 (0.0%)	2 (100.0%)	0 (0.0%)	1	0 (0.0%)
guy (Guyana)	3	0 (0.0%)	0 (0.0%)	3 (100.0%)	0 (0.0%)	1	0 (0.0%)
imn (Isle of Man)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
irq (Iraq)	25	0 (0.0%)	1 (4.0%)	24 (96.0%)	0 (0.0%)	7	0 (0.0%)
jey (Jersey)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
kgz (Kyrgyz Republic (Kyrgyzstan))	3	0 (0.0%)	0 (0.0%)	3 (100.0%)	0 (0.0%)	3	0 (0.0%)
khm (Cambodia, Kingdom of)	5	0 (0.0%)	0 (0.0%)	5 (100.0%)	0 (0.0%)	4	0 (0.0%)
lca (Saint Lucia)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
lie (Liechtenstein)	2	0 (0.0%)	0 (0.0%)	2 (100.0%)	0 (0.0%)	2	0 (0.0%)
lka (Sri Lanka)	52	0 (0.0%)	8 (15.4%)	44 (84.6%)	0 (0.0%)	3	0 (0.0%)
lva (Latvia)	8	0 (0.0%)	2 (25.0%)	6 (75.0%)	0 (0.0%)	6	0 (0.0%)
mar (Morocco)	80	0 (0.0%)	0 (0.0%)	80 (100.0%)	0 (0.0%)	3	0 (0.0%)
mco (Monaco)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
mdg (Madagascar)	32	0 (0.0%)	0 (0.0%)	32 (100.0%)	0 (0.0%)	3	0 (0.0%)
mkd (Macedonia)	11	0 (0.0%)	0 (0.0%)	11 (100.0%)	0 (0.0%)	2	0 (0.0%)
mli (Mali)	19	0 (0.0%)	0 (0.0%)	19 (100.0%)	0 (0.0%)	4	0 (0.0%)
mmr (Myanmar)	4	0 (0.0%)	0 (0.0%)	4 (100.0%)	0 (0.0%)	4	0 (0.0%)
mne (Montenegro)	2	0 (0.0%)	0 (0.0%)	2 (100.0%)	0 (0.0%)	2	0 (0.0%)
mng (Mongolia)	2	0 (0.0%)	0 (0.0%)	2 (100.0%)	0 (0.0%)	1	0 (0.0%)
ncl (New Caledonia [French])	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
nga (Nigeria)	13	0 (0.0%)	0 (0.0%)	13 (100.0%)	0 (0.0%)	7	0 (0.0%)
omn (Oman)	8	0 (0.0%)	0 (0.0%)	8 (100.0%)	0 (0.0%)	3	0 (0.0%)
pan (Panama)	33	0 (0.0%)	3 (9.1%)	30 (90.9%)	0 (0.0%)	8	0 (0.0%)
per (Peru)	11	0 (0.0%)	0 (0.0%)	11 (100.0%)	0 (0.0%)	7	0 (0.0%)
pri (Puerto Rico)	6	0 (0.0%)	0 (0.0%)	6 (100.0%)	0 (0.0%)	3	0 (0.0%)
qat (Qatar)	17	0 (0.0%)	0 (0.0%)	17 (100.0%)	0 (0.0%)	2	0 (0.0%)
reu (Reunion [French])	5	0 (0.0%)	1 (20.0%)	4 (80.0%)	0 (0.0%)	2	0 (0.0%)
sau (Saudi Arabia)	352	0 (0.0%)	35 (9.9%)	317 (90.1%)	0 (0.0%)	5	0 (0.0%)
ssd (South Sudan)	2	0 (0.0%)	0 (0.0%)	2 (100.0%)	0 (0.0%)	1	0 (0.0%)
svn (Slovenia)	14	0 (0.0%)	0 (0.0%)	14 (100.0%)	0 (0.0%)	4	0 (0.0%)
syr (Syria)	9	0 (0.0%)	0 (0.0%)	9 (100.0%)	0 (0.0%)	1	0 (0.0%)
tgo (Togo)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
tto (Trinidad and Tobago)	2	0 (0.0%)	0 (0.0%)	2 (100.0%)	0 (0.0%)	2	0 (0.0%)
ven (Venezuela)	146	0 (0.0%)	102 (69.9%)	44 (30.1%)	0 (0.0%)	4	0 (0.0%)
vgb (British Virgin Islands)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
vir (Virgin Islands [US])	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
yem (Yemen)	2	0 (0.0%)	0 (0.0%)	2 (100.0%)	0 (0.0%)	1	0 (0.0%)
zmb (Zambia)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)