[SANOG] Weekly Global IPv4 Routing Table Report
Routing Table Analysis Role Account
cscora at apnic.net
Fri Apr 22 18:02:51 UTC 2022
This is an automated weekly mailing describing the state of the Global
IPv4 Routing Table as seen from APNIC's router in Japan.
The posting is sent to APOPS, NANOG, AfNOG, SANOG, PacNOG, SAFNOG
TZNOG, MENOG, BJNOG, SDNOG, CMNOG, LACNOG and the RIPE Routing WG.
Daily listings are sent to bgp-stats at lists.apnic.net.
For historical data, please see https://thyme.apnic.net.
If you have any comments please contact Philip Smith <pfsinoz at gmail.com>.
IPv4 Routing Table Report 04:00 +10GMT Sat 23 Apr, 2022
BGP Table (Global) as seen in Japan.
Report Website: https://thyme.apnic.net
Detailed Analysis: https://thyme.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 897069
Prefixes after maximum aggregation (per Origin AS): 337713
Deaggregation factor: 2.66
Unique aggregates announced (without unneeded subnets): 430679
Total ASes present in the Internet Routing Table: 73062
Prefixes per ASN: 12.28
Origin-only ASes present in the Internet Routing Table: 62711
Origin ASes announcing only one prefix: 25747
Transit ASes present in the Internet Routing Table: 10351
Transit-only ASes present in the Internet Routing Table: 368
Average AS path length visible in the Internet Routing Table: 4.4
Max AS path length visible: 65
Max AS path prepend of ASN (267602) 58
Prefixes from unregistered ASNs in the Routing Table: 873
Number of instances of unregistered ASNs: 878
Number of 32-bit ASNs allocated by the RIRs: 39171
Number of 32-bit ASNs visible in the Routing Table: 32539
Prefixes from 32-bit ASNs in the Routing Table: 153339
Number of bogon 32-bit ASNs visible in the Routing Table: 21
Special use prefixes present in the Routing Table: 1
Prefixes being announced from unallocated address space: 500
Number of addresses announced to Internet: 3067462272
Equivalent to 182 /8s, 213 /16s and 194 /24s
Percentage of available address space announced: 82.9
Percentage of allocated address space announced: 82.9
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 99.6
Total number of prefixes smaller than registry allocations: 304272
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 235509
Total APNIC prefixes after maximum aggregation: 66616
APNIC Deaggregation factor: 3.54
Prefixes being announced from the APNIC address blocks: 230404
Unique aggregates announced from the APNIC address blocks: 94659
APNIC Region origin ASes present in the Internet Routing Table: 12580
APNIC Prefixes per ASN: 18.32
APNIC Region origin ASes announcing only one prefix: 3578
APNIC Region transit ASes present in the Internet Routing Table: 1726
Average APNIC Region AS path length visible: 4.8
Max APNIC Region AS path length visible: 27
Number of APNIC region 32-bit ASNs visible in the Routing Table: 7780
Number of APNIC addresses announced to Internet: 774164736
Equivalent to 46 /8s, 36 /16s and 209 /24s
APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations) 23552-24575, 37888-38911, 45056-46079, 55296-56319,
58368-59391, 63488-64098, 64297-64395, 131072-151865
APNIC Address Blocks 1/8, 14/8, 27/8, 36/8, 39/8, 42/8, 43/8,
49/8, 58/8, 59/8, 60/8, 61/8, 101/8, 103/8,
106/8, 110/8, 111/8, 112/8, 113/8, 114/8, 115/8,
116/8, 117/8, 118/8, 119/8, 120/8, 121/8, 122/8,
123/8, 124/8, 125/8, 126/8, 133/8, 150/8, 153/8,
163/8, 171/8, 175/8, 180/8, 182/8, 183/8, 202/8,
203/8, 210/8, 211/8, 218/8, 219/8, 220/8, 221/8,
222/8, 223/8,
ARIN Region Analysis Summary
----------------------------
Prefixes being announced by ARIN Region ASes: 261091
Total ARIN prefixes after maximum aggregation: 119889
ARIN Deaggregation factor: 2.18
Prefixes being announced from the ARIN address blocks: 261092
Unique aggregates announced from the ARIN address blocks: 124736
ARIN Region origin ASes present in the Internet Routing Table: 19012
ARIN Prefixes per ASN: 13.73
ARIN Region origin ASes announcing only one prefix: 6900
ARIN Region transit ASes present in the Internet Routing Table: 1949
Average ARIN Region AS path length visible: 3.8
Max ARIN Region AS path length visible: 37
Number of ARIN region 32-bit ASNs visible in the Routing Table: 4459
Number of ARIN addresses announced to Internet: 1295350784
Equivalent to 77 /8s, 53 /16s and 124 /24s
ARIN AS Blocks 1-1876, 1902-2042, 2044-2046, 2048-2106
(pre-ERX allocations) 2138-2584, 2615-2772, 2823-2829, 2880-3153
3354-4607, 4865-5119, 5632-6655, 6912-7466
7723-8191, 10240-12287, 13312-15359, 16384-17407
18432-20479, 21504-23551, 25600-26591,
26624-27647, 29696-30719, 31744-33791
35840-36863, 39936-40959, 46080-47103
53248-55295, 62464-63487, 64198-64296, 393216-401308
ARIN Address Blocks 3/8, 4/8, 6/8, 7/8, 8/8, 9/8, 11/8,
12/8, 13/8, 15/8, 16/8, 17/8, 18/8, 19/8,
20/8, 21/8, 22/8, 23/8, 24/8, 26/8, 28/8,
29/8, 30/8, 32/8, 33/8, 34/8, 35/8, 38/8,
40/8, 44/8, 47/8, 48/8, 50/8, 52/8, 53/8,
54/8, 55/8, 56/8, 57/8, 63/8, 64/8, 65/8,
66/8, 67/8, 68/8, 69/8, 70/8, 71/8, 72/8,
73/8, 74/8, 75/8, 76/8, 96/8, 97/8, 98/8,
99/8, 100/8, 104/8, 107/8, 108/8, 128/8, 129/8,
130/8, 131/8, 132/8, 134/8, 135/8, 136/8, 137/8,
138/8, 139/8, 140/8, 142/8, 143/8, 144/8, 146/8,
147/8, 148/8, 149/8, 152/8, 155/8, 156/8, 157/8,
158/8, 159/8, 160/8, 161/8, 162/8, 164/8, 165/8,
166/8, 167/8, 168/8, 169/8, 170/8, 172/8, 173/8,
174/8, 184/8, 192/8, 198/8, 199/8, 204/8, 205/8,
206/8, 207/8, 208/8, 209/8, 214/8, 215/8, 216/8,
RIPE Region Analysis Summary
----------------------------
Prefixes being announced by RIPE Region ASes: 257187
Total RIPE prefixes after maximum aggregation: 117442
RIPE Deaggregation factor: 2.19
Prefixes being announced from the RIPE address blocks: 254558
Unique aggregates announced from the RIPE address blocks: 150612
RIPE Region origin ASes present in the Internet Routing Table: 28140
RIPE Prefixes per ASN: 9.05
RIPE Region origin ASes announcing only one prefix: 12053
RIPE Region transit ASes present in the Internet Routing Table: 3979
Average RIPE Region AS path length visible: 4.3
Max RIPE Region AS path length visible: 28
Number of RIPE region 32-bit ASNs visible in the Routing Table: 10699
Number of RIPE addresses announced to Internet: 713805952
Equivalent to 42 /8s, 139 /16s and 208 /24s
RIPE AS Blocks 1877-1901, 2043, 2047, 2107-2136, 2585-2614
(pre-ERX allocations) 2773-2822, 2830-2879, 3154-3353, 5377-5631
6656-6911, 8192-9215, 12288-13311, 15360-16383
20480-21503, 24576-25599, 28672-29695
30720-31743, 33792-35839, 38912-39935
40960-45055, 47104-52223, 56320-58367
59392-61439, 61952-62463, 64396-64495
196608-213403
RIPE Address Blocks 2/8, 5/8, 25/8, 31/8, 37/8, 46/8, 51/8,
62/8, 77/8, 78/8, 79/8, 80/8, 81/8, 82/8,
83/8, 84/8, 85/8, 86/8, 87/8, 88/8, 89/8,
90/8, 91/8, 92/8, 93/8, 94/8, 95/8, 109/8,
141/8, 145/8, 151/8, 176/8, 178/8, 185/8, 188/8,
193/8, 194/8, 195/8, 212/8, 213/8, 217/8,
LACNIC Region Analysis Summary
------------------------------
Prefixes being announced by LACNIC Region ASes: 114636
Total LACNIC prefixes after maximum aggregation: 27630
LACNIC Deaggregation factor: 4.15
Prefixes being announced from the LACNIC address blocks: 114525
Unique aggregates announced from the LACNIC address blocks: 48486
LACNIC Region origin ASes present in the Internet Routing Table: 10953
LACNIC Prefixes per ASN: 10.46
LACNIC Region origin ASes announcing only one prefix: 2651
LACNIC Region transit ASes present in the Internet Routing Table: 2196
Average LACNIC Region AS path length visible: 4.9
Max LACNIC Region AS path length visible: 65
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 8644
Number of LACNIC addresses announced to Internet: 176417024
Equivalent to 10 /8s, 131 /16s and 233 /24s
LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247,
61440-61951, 64099-64197, 262144-273820 + ERX transfers
LACNIC Address Blocks 177/8, 179/8, 181/8, 186/8, 187/8, 189/8, 190/8,
191/8, 200/8, 201/8,
AfriNIC Region Analysis Summary
-------------------------------
Prefixes being announced by AfriNIC Region ASes: 27773
Total AfriNIC prefixes after maximum aggregation: 5457
AfriNIC Deaggregation factor: 5.09
Prefixes being announced from the AfriNIC address blocks: 35990
Unique aggregates announced from the AfriNIC address blocks: 11753
AfriNIC Region origin ASes present in the Internet Routing Table: 1627
AfriNIC Prefixes per ASN: 22.12
AfriNIC Region origin ASes announcing only one prefix: 565
AfriNIC Region transit ASes present in the Internet Routing Table: 326
Average AfriNIC Region AS path length visible: 5.2
Max AfriNIC Region AS path length visible: 34
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 957
Number of AfriNIC addresses announced to Internet: 107442944
Equivalent to 6 /8s, 103 /16s and 115 /24s
AfriNIC AS Blocks 36864-37887, 327680-329727 & ERX transfers
AfriNIC Address Blocks 41/8, 45/8, 102/8, 105/8, 154/8, 196/8, 197/8,
APNIC Region per AS prefix count summary
----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
9808 9147 8884 44 CHINAMOBILE-CN China Mobile Communicati
7545 5912 789 697 TPG-INTERNET-AP TPG Telecom Limited, AU
4538 4712 4192 75 ERX-CERNET-BKB China Education and Rese
7552 3592 1330 19 VIETEL-AS-AP Viettel Group, VN
7713 3502 1039 53 TELKOMNET-AS-AP PT Telekomunikasi Indon
45899 3427 1880 56 VNPT-AS-VN VNPT Corp, VN
4766 2497 11121 601 KIXS-AS-KR Korea Telecom, KR
9498 2397 491 238 BBIL-AP BHARTI Airtel Ltd., IN
45090 2169 1438 79 TENCENT-NET-AP Shenzhen Tencent Compute
4755 2118 429 197 TATACOMM-AS TATA Communications formerl
Complete listing at https://thyme.apnic.net/current/data-ASnet-APNIC
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
16509 6200 10263 2693 AMAZON-02, US
11492 4474 297 690 CABLEONE, US
22773 3942 3077 365 ASN-CXA-ALL-CCI-22773-RDC, US
7155 3900 264 31 VIASAT-SP-BACKBONE, US
16625 3615 1852 2552 AKAMAI-AS, US
6327 3431 1318 62 SHAW, CA
749 2882 50780 2138 DNIC-AS-00749, US
30036 2617 374 132 MEDIACOM-ENTERPRISE-BUSINESS, US
209 2521 4962 423 CENTURYLINK-US-LEGACY-QWEST, US
20115 2255 3051 492 CHARTER-20115, US
Complete listing at https://thyme.apnic.net/current/data-ASnet-ARIN
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
12479 6787 1730 150 UNI2-AS, ES
9121 6731 1692 17 TTNET, TR
8551 4010 374 39 BEZEQ-INTERNATIONAL-AS Bezeqint Interne
20940 3924 3360 201 AKAMAI-ASN1, NL
39891 3819 220 34 ALJAWWALSTC-AS, SA
12389 2952 2273 908 ROSTELECOM-AS, RU
6849 2907 355 21 UKRTELNET, UA
9009 2473 247 1284 M247, GB
34984 2238 357 632 TELLCOM-AS, TR
47331 2088 328 1598 TTNET, TR
Complete listing at https://thyme.apnic.net/current/data-ASnet-RIPE
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
8151 10587 3392 559 Uninet S.A. de C.V., MX
10620 3469 518 748 Telmex Colombia S.A., CO
11830 2430 369 63 Instituto Costarricense de Electricidad
13999 1757 296 471 Mega Cable, S.A. de C.V., MX
6503 1452 354 523 Axtel, S.A.B. de C.V., MX
28573 1397 2333 253 CLARO S.A., BR
3816 1255 667 147 COLOMBIA TELECOMUNICACIONES S.A. ESP, C
6147 1083 369 21 Telefonica del Peru S.A.A., PE
11664 1023 191 447 Techtel LMDS Comunicaciones Interactiva
11172 961 133 63 Alestra, S. de R.L. de C.V., MX
Complete listing at https://thyme.apnic.net/current/data-ASnet-LACNIC
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
24863 1656 393 21 LINKdotNET-AS, EG
24835 1473 523 33 RAYA-AS, EG
36992 1314 1519 263 ETISALAT-MISR, EG
36903 1199 545 114 MT-MPLS, MA
29571 907 65 59 ORANGE-COTE-IVOIRE, CI
36935 773 520 42 Vodafone-, EG
6713 612 1863 34 IAM-AS, MA
15399 514 51 32 WANANCHI-, KE
37342 468 32 1 MOVITEL, MZ
23889 424 232 16 MauritiusTelecom, MU
Complete listing at https://thyme.apnic.net/current/data-ASnet-AFRINIC
Global Per AS prefix count summary
----------------------------------
ASN No of nets /20 equiv MaxAgg Description
8151 10587 3392 559 Uninet S.A. de C.V., MX
9808 9147 8884 44 CHINAMOBILE-CN China Mobile Communicati
12479 6787 1730 150 UNI2-AS, ES
9121 6731 1692 17 TTNET, TR
16509 6200 10263 2693 AMAZON-02, US
7545 5912 789 697 TPG-INTERNET-AP TPG Telecom Limited, AU
4538 4712 4192 75 ERX-CERNET-BKB China Education and Rese
11492 4474 297 690 CABLEONE, US
8551 4010 374 39 BEZEQ-INTERNATIONAL-AS Bezeqint Interne
22773 3942 3077 365 ASN-CXA-ALL-CCI-22773-RDC, US
Complete listing at https://thyme.apnic.net/current/data-ASnet
Global Per AS Maximum Aggregation summary
-----------------------------------------
ASN No of nets Net Savings Description
9808 9147 9103 CHINAMOBILE-CN China Mobile Communications Grou
9121 6731 6714 TTNET, TR
12479 6787 6637 UNI2-AS, ES
7545 5912 5215 TPG-INTERNET-AP TPG Telecom Limited, AU
4538 4712 4637 ERX-CERNET-BKB China Education and Research Net
8551 4010 3971 BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
7155 3900 3869 VIASAT-SP-BACKBONE, US
39891 3819 3785 ALJAWWALSTC-AS, SA
11492 4474 3784 CABLEONE, US
20940 3924 3723 AKAMAI-ASN1, NL
Complete listing at https://thyme.apnic.net/current/data-CIDRnet
List of Unregistered Origin ASNs (Global)
-----------------------------------------
Bad AS Designation Net Originated Transit AS Transit AS Name
398083 UNALLOCATED 5.133.124.0/24 399587 UT, US
33123 UNALLOCATED 8.10.69.0/24 11168 SCC, US
62828 UNALLOCATED 8.21.130.0/24 3356 LEVEL3, US
393266 UNALLOCATED 8.23.52.0/24 46887 LIGHTOWER, US
18604 UNALLOCATED 8.25.204.0/24 3356 LEVEL3, US
394936 UNALLOCATED 8.33.224.0/24 22442 HOU-PHONOSCOPE, US
54338 UNALLOCATED 8.33.241.0/24 6461 ZAYO-6461, US
395438 UNALLOCATED 8.42.206.0/24 3356 LEVEL3, US
395056 UNALLOCATED 8.45.133.0/24 3356 LEVEL3, US
32306 UNALLOCATED 8.46.80.0/24 33652 CMCS, US
Complete listing at https://thyme.apnic.net/current/data-badAS
Prefixes from the Special Purpose Address Registry (Global)
-----------------------------------------------------------
Prefix Origin AS Description
192.88.99.0/24 6939 HURRICANE, US
Complete listing at https://thyme.apnic.net/current/data-spar
Advertised Unallocated Addresses
--------------------------------
Unassigned Network ASN Information AS Name
23.131.185.0/24 Origin: 174 COGENT-174, US
23.131.185.0/24 Transit: 2516 KDDI KDDI CORPORATION, JP
23.135.82.0/24 Origin: 206203 ASHNET-AS, US
23.135.82.0/24 Transit: 20473 AS-CHOOPA, US
23.141.0.0/24 Origin: 395350 UNASSIGNED
23.141.0.0/24 Transit: 11426 TWC-11426-CAROLINAS, US
27.100.7.0/24 Origin: 56096 UNASSIGNED
27.100.7.0/24 Transit: 45455 TH-2S1N-AP Two S One N Co Ltd, Internet
41.57.124.0/22 Origin: 37442 UNASSIGNED
41.57.124.0/22 Transit: 37204 TELONE, ZW
Complete listing at https://thyme.apnic.net/current/data-add-IANA
Number of prefixes announced per prefix length (Global)
-------------------------------------------------------
/1:0 /2:0 /3:0 /4:0 /5:0 /6:0
/7:0 /8:16 /9:13 /10:41 /11:100 /12:303
/13:592 /14:1203 /15:2060 /16:13529 /17:8262 /18:13908
/19:25201 /20:43733 /21:52325 /22:108575 /23:95988 /24:530390
/25:830 /26:0 /27:0 /28:0 /29:0 /30:0
/31:0 /32:0
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
9121 5886 6731 TTNET, TR
12479 5769 6787 UNI2-AS, ES
8151 4243 10587 Uninet S.A. de C.V., MX
8551 3476 4010 BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
11492 3380 4474 CABLEONE, US
6327 3243 3431 SHAW, CA
39891 3131 3819 ALJAWWALSTC-AS, SA
7155 2990 3900 VIASAT-SP-BACKBONE, US
22773 2942 3942 ASN-CXA-ALL-CCI-22773-RDC, US
6849 2758 2907 UKRTELNET, UA
Complete listing at https://thyme.apnic.net/current/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:1942 2:1034 3:155 4:7 5:3790 6:103
7:5 8:1565 9:1 11:172 12:1710 13:298
14:2380 15:192 16:45 17:381 18:156 20:194
21:4 22:188 23:5625 24:2301 25:6 27:2595
29:19 31:2417 32:96 34:1 35:73 36:1755
37:4418 38:2809 39:700 40:153 41:3945 42:1076
43:2194 44:288 45:16013 46:4124 47:336 49:1693
50:1933 51:101 52:1412 54:363 55:716 56:8
57:58 58:1806 59:1204 60:957 61:2268 62:2489
63:1955 64:5511 65:2297 66:4853 67:2973 68:1192
69:4146 70:1338 71:658 72:3050 74:2664 75:1387
76:589 77:2179 78:3905 79:3112 80:1975 81:1738
82:1499 83:1209 84:1367 85:3650 86:708 87:1960
88:2734 89:3274 90:521 91:7627 92:1998 93:2594
94:3508 95:4785 96:1298 97:351 98:991 99:736
100:75 101:1041 102:2052 103:28936 104:4361 105:466
106:858 107:2515 108:836 109:4214 110:2074 111:3288
112:2033 113:1537 114:1489 115:1962 116:1901 117:2518
118:2331 119:1853 120:1690 121:1073 122:2577 123:2125
124:1591 125:2116 128:1228 129:1099 130:966 131:2048
132:766 133:373 134:1926 135:291 136:883 137:859
138:2438 139:1503 140:864 141:1403 142:1292 143:1468
144:1213 145:344 146:1814 147:1496 148:2214 149:1731
150:854 151:1083 152:1855 153:458 154:3570 155:1428
156:1859 157:1227 158:1038 159:2110 160:2471 161:1325
162:3459 163:1253 164:1636 165:1613 166:700 167:1712
168:3805 169:833 170:4452 171:831 172:3140 173:3089
174:1022 175:1127 176:3523 177:4636 178:3506 179:2011
180:2277 181:2973 182:3240 183:1954 184:2390 185:19460
186:4360 187:3703 188:3866 189:3205 190:8897 191:1318
192:10993 193:8618 194:6978 195:4965 196:2974 197:2391
198:6030 199:6036 200:7489 201:5675 202:10489 203:10035
204:4559 205:3406 206:3769 207:3393 208:4067 209:4657
210:4267 211:2453 212:4033 213:3424 214:1153 215:67
216:6439 217:2656 218:1274 219:572 220:1950 221:980
222:843 223:2149
End of report
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