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)	2346	368 (15.7%)	360 (15.3%)	1593 (67.9%)	25 (1.1%)	481	202 (42.0%)
ind (India)	1387	291 (21.0%)	167 (12.0%)	926 (66.8%)	3 (0.2%)	64	20 (31.3%)
usa (United States)	2282	125 (5.5%)	622 (27.3%)	1534 (67.2%)	1 (0.0%)	314	75 (23.9%)
egy (Egypt)	155	100 (64.5%)	0 (0.0%)	55 (35.5%)	0 (0.0%)	5	3 (60.0%)
arg (Argentina)	113	66 (58.4%)	11 (9.7%)	36 (31.9%)	0 (0.0%)	22	9 (40.9%)
zaf (South Africa)	221	33 (14.9%)	11 (5.0%)	177 (80.1%)	0 (0.0%)	42	12 (28.6%)
vnm (Vietnam)	117	27 (23.1%)	14 (12.0%)	75 (64.1%)	1 (0.9%)	10	6 (60.0%)
tha (Thailand)	310	26 (8.4%)	13 (4.2%)	271 (87.4%)	0 (0.0%)	18	9 (50.0%)
tun (Tunisia)	45	26 (57.8%)	0 (0.0%)	19 (42.2%)	0 (0.0%)	5	1 (20.0%)
irn (Iran)	270	24 (8.9%)	12 (4.4%)	234 (86.7%)	0 (0.0%)	22	4 (18.2%)
chn (China)	490	23 (4.7%)	139 (28.4%)	325 (66.3%)	3 (0.6%)	44	16 (36.4%)
rus (Russian Federation)	227	23 (10.1%)	41 (18.1%)	163 (71.8%)	0 (0.0%)	72	14 (19.4%)
bgd (Bangladesh)	54	20 (37.0%)	1 (1.9%)	33 (61.1%)	0 (0.0%)	31	13 (41.9%)
pol (Poland)	245	20 (8.2%)	21 (8.6%)	203 (82.9%)	1 (0.4%)	52	10 (19.2%)
are (United Arab Emirates)	71	19 (26.8%)	5 (7.0%)	47 (66.2%)	0 (0.0%)	6	2 (33.3%)
ita (Italy)	429	19 (4.4%)	19 (4.4%)	391 (91.1%)	0 (0.0%)	40	10 (25.0%)
cmr (Cameroon)	43	18 (41.9%)	2 (4.7%)	23 (53.5%)	0 (0.0%)	8	5 (62.5%)
can (Canada)	272	15 (5.5%)	52 (19.1%)	205 (75.4%)	0 (0.0%)	53	11 (20.8%)
isr (Israel)	110	15 (13.6%)	19 (17.3%)	76 (69.1%)	0 (0.0%)	13	6 (46.2%)
npl (Nepal)	50	13 (26.0%)	5 (10.0%)	31 (62.0%)	1 (2.0%)	11	5 (45.5%)
twn (Taiwan)	171	13 (7.6%)	36 (21.1%)	122 (71.3%)	0 (0.0%)	10	3 (30.0%)
pak (Pakistan)	60	12 (20.0%)	4 (6.7%)	44 (73.3%)	0 (0.0%)	17	7 (41.2%)
ukr (Ukraine)	72	12 (16.7%)	13 (18.1%)	47 (65.3%)	0 (0.0%)	41	5 (12.2%)
ken (Kenya)	63	11 (17.5%)	1 (1.6%)	51 (81.0%)	0 (0.0%)	10	4 (40.0%)
mus (Mauritius)	97	11 (11.3%)	3 (3.1%)	83 (85.6%)	0 (0.0%)	15	6 (40.0%)
deu (Germany)	1386	10 (0.7%)	242 (17.5%)	1134 (81.8%)	0 (0.0%)	71	7 (9.9%)
kor (South Korea)	189	10 (5.3%)	96 (50.8%)	83 (43.9%)	0 (0.0%)	15	3 (20.0%)
mex (Mexico)	475	10 (2.1%)	28 (5.9%)	436 (91.8%)	1 (0.2%)	24	6 (25.0%)
aus (Australia)	477	9 (1.9%)	47 (9.9%)	421 (88.3%)	0 (0.0%)	35	7 (20.0%)
hun (Hungary)	128	9 (7.0%)	10 (7.8%)	109 (85.2%)	0 (0.0%)	13	6 (46.2%)
ago (Angola)	84	8 (9.5%)	1 (1.2%)	75 (89.3%)	0 (0.0%)	6	4 (66.7%)
hkg (Hong Kong)	62	8 (12.9%)	6 (9.7%)	48 (77.4%)	0 (0.0%)	20	4 (20.0%)
nld (Netherlands)	216	8 (3.7%)	82 (38.0%)	124 (57.4%)	2 (0.9%)	62	10 (16.1%)
swe (Sweden)	134	8 (6.0%)	31 (23.1%)	95 (70.9%)	0 (0.0%)	27	7 (25.9%)
uga (Uganda)	14	8 (57.1%)	0 (0.0%)	6 (42.9%)	0 (0.0%)	4	2 (50.0%)
phl (Philippines)	185	7 (3.8%)	11 (5.9%)	167 (90.3%)	0 (0.0%)	14	5 (35.7%)
bfa (Burkina Faso)	20	6 (30.0%)	2 (10.0%)	12 (60.0%)	0 (0.0%)	6	2 (33.3%)
cze (Czech Republic)	31	6 (19.4%)	0 (0.0%)	25 (80.6%)	0 (0.0%)	18	3 (16.7%)
idn (Indonesia)	42	6 (14.3%)	3 (7.1%)	33 (78.6%)	0 (0.0%)	19	4 (21.1%)
tur (Turkey)	366	6 (1.6%)	6 (1.6%)	354 (96.7%)	0 (0.0%)	28	5 (17.9%)
jpn (Japan)	198	5 (2.5%)	30 (15.2%)	163 (82.3%)	0 (0.0%)	33	4 (12.1%)
mys (Malaysia)	133	5 (3.8%)	12 (9.0%)	116 (87.2%)	0 (0.0%)	9	4 (44.4%)
chl (Chile)	66	4 (6.1%)	5 (7.6%)	57 (86.4%)	0 (0.0%)	13	4 (30.8%)
dnk (Denmark)	18	4 (22.2%)	4 (22.2%)	10 (55.6%)	0 (0.0%)	10	3 (30.0%)
esp (Spain)	179	4 (2.2%)	21 (11.7%)	154 (86.0%)	0 (0.0%)	25	3 (12.0%)
gbr (United Kingdom)	579	4 (0.7%)	97 (16.8%)	476 (82.2%)	2 (0.3%)	68	5 (7.4%)
pry (Paraguay)	10	4 (40.0%)	0 (0.0%)	6 (60.0%)	0 (0.0%)	3	3 (100.0%)
sgp (Singapore)	45	4 (8.9%)	14 (31.1%)	27 (60.0%)	0 (0.0%)	22	4 (18.2%)
svk (Slovak Republic)	30	4 (13.3%)	1 (3.3%)	25 (83.3%)	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%)
bgr (Bulgaria)	42	3 (7.1%)	5 (11.9%)	34 (81.0%)	0 (0.0%)	16	3 (18.8%)
cri (Costa Rica)	28	3 (10.7%)	2 (7.1%)	23 (82.1%)	0 (0.0%)	13	2 (15.4%)
ecu (Ecuador)	42	3 (7.1%)	6 (14.3%)	33 (78.6%)	0 (0.0%)	13	2 (15.4%)
est (Estonia)	33	3 (9.1%)	4 (12.1%)	26 (78.8%)	0 (0.0%)	9	1 (11.1%)
fra (France)	199	3 (1.5%)	39 (19.6%)	157 (78.9%)	0 (0.0%)	29	3 (10.3%)
hrv (Croatia)	24	3 (12.5%)	0 (0.0%)	21 (87.5%)	0 (0.0%)	3	2 (66.7%)
hti (Haiti)	5	3 (60.0%)	0 (0.0%)	2 (40.0%)	0 (0.0%)	2	2 (100.0%)
irq (Iraq)	26	3 (11.5%)	1 (3.8%)	22 (84.6%)	0 (0.0%)	7	2 (28.6%)
ltu (Lithuania)	23	3 (13.0%)	4 (17.4%)	16 (69.6%)	0 (0.0%)	12	3 (25.0%)
prt (Portugal)	48	3 (6.3%)	10 (20.8%)	35 (72.9%)	0 (0.0%)	8	2 (25.0%)
rou (Romania)	104	3 (2.9%)	21 (20.2%)	80 (76.9%)	0 (0.0%)	12	2 (16.7%)
tza (Tanzania)	10	3 (30.0%)	1 (10.0%)	6 (60.0%)	0 (0.0%)	6	2 (33.3%)
btn (Bhutan)	8	2 (25.0%)	4 (50.0%)	2 (25.0%)	0 (0.0%)	3	2 (66.7%)
cyp (Cyprus)	21	2 (9.5%)	2 (9.5%)	17 (81.0%)	0 (0.0%)	6	2 (33.3%)
gha (Ghana)	36	2 (5.6%)	0 (0.0%)	34 (94.4%)	0 (0.0%)	4	1 (25.0%)
jor (Jordan)	48	2 (4.2%)	13 (27.1%)	33 (68.8%)	0 (0.0%)	6	2 (33.3%)
kwt (Kuwait)	151	2 (1.3%)	2 (1.3%)	147 (97.4%)	0 (0.0%)	5	1 (20.0%)
mdv (Maldives)	15	2 (13.3%)	1 (6.7%)	12 (80.0%)	0 (0.0%)	2	1 (50.0%)
sdn (Sudan)	26	2 (7.7%)	4 (15.4%)	20 (76.9%)	0 (0.0%)	5	1 (20.0%)
srb (Serbia)	16	2 (12.5%)	3 (18.8%)	11 (68.8%)	0 (0.0%)	6	1 (16.7%)
ury (Uruguay)	39	2 (5.1%)	15 (38.5%)	22 (56.4%)	0 (0.0%)	7	1 (14.3%)
afg (Afghanistan, Islamic State of)	1	1 (100.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	1	1 (100.0%)
arm (Armenia)	1	1 (100.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	1	1 (100.0%)
aut (Austria)	112	1 (0.9%)	8 (7.1%)	103 (92.0%)	0 (0.0%)	18	1 (5.6%)
ben (Benin)	15	1 (6.7%)	0 (0.0%)	14 (93.3%)	0 (0.0%)	5	1 (20.0%)
bih (Bosnia and Herzegovina)	22	1 (4.5%)	1 (4.5%)	20 (90.9%)	0 (0.0%)	3	1 (33.3%)
bol (Bolivia)	12	1 (8.3%)	2 (16.7%)	9 (75.0%)	0 (0.0%)	2	1 (50.0%)
brb (Barbados)	3	1 (33.3%)	0 (0.0%)	2 (66.7%)	0 (0.0%)	2	1 (50.0%)
che (Switzerland)	98	1 (1.0%)	15 (15.3%)	82 (83.7%)	0 (0.0%)	25	1 (4.0%)
col (Colombia)	17	1 (5.9%)	0 (0.0%)	16 (94.1%)	0 (0.0%)	10	1 (10.0%)
dza (Algeria)	27	1 (3.7%)	0 (0.0%)	26 (96.3%)	0 (0.0%)	1	1 (100.0%)
geo (Georgia)	20	1 (5.0%)	2 (10.0%)	17 (85.0%)	0 (0.0%)	3	1 (33.3%)
grc (Greece)	128	1 (0.8%)	18 (14.1%)	109 (85.2%)	0 (0.0%)	12	1 (8.3%)
gtm (Guatemala)	3	1 (33.3%)	1 (33.3%)	1 (33.3%)	0 (0.0%)	2	1 (50.0%)
isl (Iceland)	7	1 (14.3%)	4 (57.1%)	2 (28.6%)	0 (0.0%)	4	1 (25.0%)
khm (Cambodia, Kingdom of)	11	1 (9.1%)	0 (0.0%)	10 (90.9%)	0 (0.0%)	7	1 (14.3%)
lka (Sri Lanka)	21	1 (4.8%)	4 (19.0%)	16 (76.2%)	0 (0.0%)	3	1 (33.3%)
lux (Luxembourg)	30	1 (3.3%)	4 (13.3%)	25 (83.3%)	0 (0.0%)	1	1 (100.0%)
mda (Moldova, Republic of)	5	1 (20.0%)	0 (0.0%)	4 (80.0%)	0 (0.0%)	3	1 (33.3%)
mli (Mali)	45	1 (2.2%)	0 (0.0%)	44 (97.8%)	0 (0.0%)	4	1 (25.0%)
mlt (Malta)	2	1 (50.0%)	0 (0.0%)	1 (50.0%)	0 (0.0%)	1	1 (100.0%)
mwi (Malawi)	20	1 (5.0%)	0 (0.0%)	19 (95.0%)	0 (0.0%)	4	1 (25.0%)
sen (Senegal)	4	1 (25.0%)	0 (0.0%)	3 (75.0%)	0 (0.0%)	2	1 (50.0%)
som (Somalia)	4	1 (25.0%)	1 (25.0%)	1 (25.0%)	1 (25.0%)	2	1 (50.0%)
and (Andorra, Principality of)	2	0 (0.0%)	1 (50.0%)	1 (50.0%)	0 (0.0%)	2	0 (0.0%)
aze (Azerbaijan)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
bel (Belgium)	74	0 (0.0%)	17 (23.0%)	57 (77.0%)	0 (0.0%)	9	0 (0.0%)
bhr (Bahrain)	24	0 (0.0%)	0 (0.0%)	24 (100.0%)	0 (0.0%)	2	0 (0.0%)
blr (Belarus)	33	0 (0.0%)	0 (0.0%)	33 (100.0%)	0 (0.0%)	3	0 (0.0%)
bmu (Bermuda)	3	0 (0.0%)	0 (0.0%)	3 (100.0%)	0 (0.0%)	2	0 (0.0%)
civ (Ivory Coast (Cote D'Ivoire))	4	0 (0.0%)	0 (0.0%)	4 (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%)
cpv (Cape Verde)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
cub (Cuba)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
dom (Dominican Republic)	40	0 (0.0%)	0 (0.0%)	40 (100.0%)	0 (0.0%)	3	0 (0.0%)
eth (Ethiopia)	17	0 (0.0%)	0 (0.0%)	17 (100.0%)	0 (0.0%)	1	0 (0.0%)
fin (Finland)	82	0 (0.0%)	14 (17.1%)	68 (82.9%)	0 (0.0%)	5	0 (0.0%)
fro (Faroe Islands)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	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%)
guf (French Guyana)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
gum (Guam [US])	1	0 (0.0%)	0 (0.0%)	1 (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%)
hnd (Honduras)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
irl (Ireland)	60	0 (0.0%)	12 (20.0%)	48 (80.0%)	0 (0.0%)	14	0 (0.0%)
kaz (Kazakhstan)	3	0 (0.0%)	0 (0.0%)	3 (100.0%)	0 (0.0%)	2	0 (0.0%)
kgz (Kyrgyz Republic (Kyrgyzstan))	3	0 (0.0%)	0 (0.0%)	3 (100.0%)	0 (0.0%)	3	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)	7	0 (0.0%)	4 (57.1%)	3 (42.9%)	0 (0.0%)	2	0 (0.0%)
lva (Latvia)	16	0 (0.0%)	2 (12.5%)	14 (87.5%)	0 (0.0%)	5	0 (0.0%)
mar (Morocco)	57	0 (0.0%)	0 (0.0%)	57 (100.0%)	0 (0.0%)	4	0 (0.0%)
mdg (Madagascar)	29	0 (0.0%)	0 (0.0%)	29 (100.0%)	0 (0.0%)	3	0 (0.0%)
mkd (Macedonia)	27	0 (0.0%)	0 (0.0%)	27 (100.0%)	0 (0.0%)	1	0 (0.0%)
mmr (Myanmar)	4	0 (0.0%)	0 (0.0%)	4 (100.0%)	0 (0.0%)	4	0 (0.0%)
mne (Montenegro)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
mng (Mongolia)	3	0 (0.0%)	0 (0.0%)	3 (100.0%)	0 (0.0%)	2	0 (0.0%)
nam (Namibia)	9	0 (0.0%)	1 (11.1%)	8 (88.9%)	0 (0.0%)	2	0 (0.0%)
nga (Nigeria)	14	0 (0.0%)	0 (0.0%)	14 (100.0%)	0 (0.0%)	6	0 (0.0%)
nor (Norway)	42	0 (0.0%)	10 (23.8%)	32 (76.2%)	0 (0.0%)	8	0 (0.0%)
nzl (New Zealand)	102	0 (0.0%)	22 (21.6%)	80 (78.4%)	0 (0.0%)	15	0 (0.0%)
omn (Oman)	7	0 (0.0%)	0 (0.0%)	7 (100.0%)	0 (0.0%)	2	0 (0.0%)
pan (Panama)	26	0 (0.0%)	4 (15.4%)	22 (84.6%)	0 (0.0%)	7	0 (0.0%)
per (Peru)	9	0 (0.0%)	0 (0.0%)	9 (100.0%)	0 (0.0%)	7	0 (0.0%)
pri (Puerto Rico)	9	0 (0.0%)	0 (0.0%)	9 (100.0%)	0 (0.0%)	3	0 (0.0%)
qat (Qatar)	20	0 (0.0%)	0 (0.0%)	20 (100.0%)	0 (0.0%)	1	0 (0.0%)
reu (Reunion [French])	8	0 (0.0%)	1 (12.5%)	7 (87.5%)	0 (0.0%)	2	0 (0.0%)
sau (Saudi Arabia)	361	0 (0.0%)	33 (9.1%)	328 (90.9%)	0 (0.0%)	5	0 (0.0%)
slb (Solomon Islands)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	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)	12	0 (0.0%)	0 (0.0%)	12 (100.0%)	0 (0.0%)	4	0 (0.0%)
syr (Syria)	3	0 (0.0%)	0 (0.0%)	3 (100.0%)	0 (0.0%)	1	0 (0.0%)
tcd (Chad)	2	0 (0.0%)	2 (100.0%)	0 (0.0%)	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)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
ven (Venezuela)	60	0 (0.0%)	21 (35.0%)	39 (65.0%)	0 (0.0%)	3	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%)