IPv4 R&E Routing Table Report 23:05 GMT Sat 31 May, 2025 IPv4 BGP Table (Global) as seen at Singapore. Report Website: https://bgp.nsrc.org/REN Detailed Analysis: https://bgp.nsrc.org/REN/Singapore/ Analysis Summary ---------------- BGP routing table entries examined: 982647 Prefixes after maximum aggregation (per Origin AS): 379418 Deaggregation factor: 2.59 Unique aggregates announced (without unneeded subnets): 482795 Number of IPv4 prefixes with a valid ROA: 547110 Number of IPv4 prefixes with an invalid ROA: 624 Number of IPv4 prefixes with no ROA: 434913 Total ASes present in the Internet Routing Table: 76771 Prefixes per ASN: 12.80 Origin-only ASes present in the Internet Routing Table: 65798 Origin ASes announcing only one prefix: 26907 Transit ASes present in the Internet Routing Table: 10973 Transit-only ASes present in the Internet Routing Table: 544 Paths with bogon ASNs present in the IPv4 Routing Table: 29 Average AS path length visible in the Internet Routing Table: 4.8 Max AS path length visible: 79 Max AS path prepend of ASN ( 37447) 75 Prefixes from unregistered ASNs in the Routing Table: 1067 Number of instances of unregistered ASNs: 1084 Number of 32-bit ASNs allocated by the RIRs: 46546 Number of 32-bit ASNs visible in the Routing Table: 38265 Prefixes from 32-bit ASNs in the Routing Table: 203950 Number of bogon 32-bit ASNs visible in the Routing Table: 44 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 451 Number of addresses announced to Internet: 3109897728 Equivalent to 185 /8s, 93 /16s and 70 /24s Percentage of available address space announced: 84.0 Percentage of allocated address space announced: 84.0 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: 320682 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 258663 Total APNIC prefixes after maximum aggregation: 77210 APNIC Deaggregation factor: 3.35 Prefixes being announced from the APNIC address blocks: 249632 Unique aggregates announced from the APNIC address blocks: 104221 APNIC Region origin ASes present in the Internet Routing Table: 14559 APNIC Prefixes per ASN: 17.15 APNIC Region origin ASes announcing only one prefix: 4415 APNIC Region transit ASes present in the Internet Routing Table: 1961 Average APNIC Region AS path length visible: 4.6 Max APNIC Region AS path length visible: 29 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10108 Number of APNIC addresses announced to Internet: 748643328 Equivalent to 44 /8s, 159 /16s and 100 /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, 131072-155961 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: 289815 Total ARIN prefixes after maximum aggregation: 130959 ARIN Deaggregation factor: 2.21 Prefixes being announced from the ARIN address blocks: 290462 Unique aggregates announced from the ARIN address blocks: 139527 ARIN Region origin ASes present in the Internet Routing Table: 19205 ARIN Prefixes per ASN: 15.12 ARIN Region origin ASes announcing only one prefix: 7039 ARIN Region transit ASes present in the Internet Routing Table: 1923 Average ARIN Region AS path length visible: 4.4 Max ARIN Region AS path length visible: 28 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5213 Number of ARIN addresses announced to Internet: 1352478976 Equivalent to 80 /8s, 157 /16s and 49 /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, 393216-402332 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, 45/8, 47/8, 48/8, 50/8, 52/8, 54/8, 55/8, 56/8, 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: 273954 Total RIPE prefixes after maximum aggregation: 134347 RIPE Deaggregation factor: 2.04 Prefixes being announced from the RIPE address blocks: 272294 Unique aggregates announced from the RIPE address blocks: 175185 RIPE Region origin ASes present in the Internet Routing Table: 28928 RIPE Prefixes per ASN: 9.41 RIPE Region origin ASes announcing only one prefix: 12082 RIPE Region transit ASes present in the Internet Routing Table: 3966 Average RIPE Region AS path length visible: 5.0 Max RIPE Region AS path length visible: 73 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12455 Number of RIPE addresses announced to Internet: 731548160 Equivalent to 43 /8s, 154 /16s and 138 /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 196608-216475 RIPE Address Blocks 2/8, 5/8, 25/8, 31/8, 37/8, 46/8, 51/8, 53/8, 57/8, 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: 123572 Total LACNIC prefixes after maximum aggregation: 29559 LACNIC Deaggregation factor: 4.18 Prefixes being announced from the LACNIC address blocks: 119965 Unique aggregates announced from the LACNIC address blocks: 48980 LACNIC Region origin ASes present in the Internet Routing Table: 11260 LACNIC Prefixes per ASN: 10.65 LACNIC Region origin ASes announcing only one prefix: 2683 LACNIC Region transit ASes present in the Internet Routing Table: 2538 Average LACNIC Region AS path length visible: 5.4 Max LACNIC Region AS path length visible: 74 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9214 Number of LACNIC addresses announced to Internet: 171904512 Equivalent to 10 /8s, 63 /16s and 14 /24s LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247, 61440-61951, 64099-64197, 262144-274844 + 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: 35576 Total AfriNIC prefixes after maximum aggregation: 6690 AfriNIC Deaggregation factor: 5.32 Prefixes being announced from the AfriNIC address blocks: 49843 Unique aggregates announced from the AfriNIC address blocks: 14475 AfriNIC Region origin ASes present in the Internet Routing Table: 1908 AfriNIC Prefixes per ASN: 26.12 AfriNIC Region origin ASes announcing only one prefix: 688 AfriNIC Region transit ASes present in the Internet Routing Table: 379 Average AfriNIC Region AS path length visible: 5.5 Max AfriNIC Region AS path length visible: 79 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1275 Number of AfriNIC addresses announced to Internet: 105117952 Equivalent to 6 /8s, 67 /16s and 249 /24s AfriNIC AS Blocks 36864-37887, 327680-329727 & ERX transfers AfriNIC Address Blocks 41/8, 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 11065 8756 97 CHINAMOBILE-CN China Mobile Communication 7545 6177 844 649 TPG-INTERNET-AP TPG Telecom Limited, AU 18403 4381 347 25 FPT-AS-AP FPT Telecom Company, VN 9498 4370 533 301 BBIL-AP BHARTI Airtel Ltd., IN 7552 3923 1332 26 VIETEL-AS-AP Viettel Group, VN 7713 3694 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3275 1869 103 VNPT-AS-VN VNPT Corp, VN 24560 2878 854 528 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 4755 2178 434 193 TATACOMM-AS TATA Communications formerly 45090 2173 1439 86 TENCENT-NET-AP Shenzhen Tencent Computer Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet-APNIC ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 16509 13586 40828 5185 AMAZON-02, US 11492 4735 314 586 CABLEONE, US 7155 3864 286 85 VIASAT-SP-BACKBONE, US 6327 3631 1320 81 SHAW, CA 174 3451 8747 896 COGENT-174, US 22773 3346 3017 167 ASN-CXA-ALL-CCI-22773-RDC, US 749 3231 54784 2482 DNIC-AS-00749, US 396982 3177 3853 422 GOOGLE-CLOUD-PLATFORM, US 16625 3015 1257 2228 AKAMAI-AS, US 36352 2816 230 852 AS-COLOCROSSING, US Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet-ARIN RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 12479 7716 1714 148 UNI2-AS, ES 39891 4798 293 63 ALJAWWALSTC-AS, SA 20940 3958 3395 123 AKAMAI-ASN1, NL 9009 3896 354 2071 M247, RO 12389 3074 2306 889 ROSTELECOM-AS PJSC Rostelecom. Technical 34984 2391 360 580 TELLCOM-AS, TR 212238 2225 161 1638 CDNEXT, GB 13188 1606 100 34 TRIOLAN, UA 8452 1573 1852 14 TE-AS TE-AS, EG 62240 1424 95 739 CLOUVIDER Clouvider - Global ASN, GB Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet-RIPE LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description 8151 12164 3251 576 UNINET, MX 10620 3499 480 1017 Telmex Colombia S.A., CO 13999 2513 540 362 Mega Cable, S.A. de C.V., MX 11830 1990 369 64 Instituto Costarricense de Electricidad y 28573 1361 2438 262 Claro NXT Telecomunicacoes Ltda, BR 3816 1338 785 210 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1198 371 22 Telefonica del Peru S.A.A., PE 11664 1097 278 33 Techtel LMDS Comunicaciones Interactivas 22884 1061 67 374 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1036 2503 52 TIM SA, BR Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet-LACNIC AfriNIC Region per AS prefix count summary ------------------------------------------ ASN No of nets /20 equiv MaxAgg Description 24835 1780 644 27 RAYA-AS, EG 24863 1651 389 17 LINKdotNET-AS, EG 29571 1611 102 33 ORANGE-COTE-IVOIRE, CI 36992 1431 1519 280 ETISALAT-MISR, EG 36903 1250 554 97 MT-MPLS, MA 37069 1107 1100 18 MOBINIL, EG 36935 1054 523 47 Vodafone-, EG 20011 980 185 285 INTERNET-SOLUTIONS, ZA 36914 551 82 3 KENET-AS, KE 15399 545 57 60 WANANCHI-, KE Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet-AFRINIC Global Per AS prefix count summary ---------------------------------- ASN No of nets /20 equiv MaxAgg Description 16509 13586 40828 5185 AMAZON-02, US 8151 12164 3251 576 UNINET, MX 9808 11065 8756 97 CHINAMOBILE-CN China Mobile Communication 12479 7716 1714 148 UNI2-AS, ES 7545 6177 844 649 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 293 63 ALJAWWALSTC-AS, SA 11492 4735 314 586 CABLEONE, US 18403 4381 347 25 FPT-AS-AP FPT Telecom Company, VN 9498 4370 533 301 BBIL-AP BHARTI Airtel Ltd., IN 20940 3958 3395 123 AKAMAI-ASN1, NL Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 8151 12164 11588 UNINET, MX 9808 11065 10968 CHINAMOBILE-CN China Mobile Communications Grou 12479 7716 7568 UNI2-AS, ES 7545 6177 5528 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 4735 ALJAWWALSTC-AS, SA 18403 4381 4356 FPT-AS-AP FPT Telecom Company, VN 11492 4735 4149 CABLEONE, US 9498 4370 4069 BBIL-AP BHARTI Airtel Ltd., IN 7552 3923 3897 VIETEL-AS-AP Viettel Group, VN 20940 3958 3835 AKAMAI-ASN1, NL Complete listing at https://bgp.nsrc.org/REN/Singapore/data-CIDRnet List of Unregistered Origin ASNs (Global) ----------------------------------------- Bad AS Designation Net Originated Transit AS Transit AS Name 22542 UNALLOCATED 8.7.205.0/24 3356 LEVEL3, US 33123 UNALLOCATED 8.10.69.0/24 174 COGENT-174, US 12169 UNALLOCATED 8.15.207.0/24 32787 PROLEXIC-TECHNOLOGIES-D 46639 UNALLOCATED 8.17.66.0/24 701 UUNET, US 53775 UNALLOCATED 8.20.88.0/24 7029 WINDSTREAM, US 393266 UNALLOCATED 8.23.52.0/24 46887 CROWNCASTLE-AS46887, US 396894 UNALLOCATED 8.28.201.0/24 3356 LEVEL3, US 394936 UNALLOCATED 8.33.224.0/24 22442 HOU-PHONOSCOPE, US 54338 UNALLOCATED 8.33.241.0/24 3356 LEVEL3, US 46639 UNALLOCATED 8.38.73.0/24 3356 LEVEL3, US Complete listing at https://bgp.nsrc.org/REN/Singapore/data-badAS Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 14.192.20.0/22 Origin: 26658 HENGTONG-IDC-LLC, US 14.192.20.0/22 Transit: 3491 CONSOLE-CONNECT-ASN, US 23.140.216.0/24 Origin: 27176 DATAWAGON, US 23.140.216.0/24 Transit: 20278 NEXEON, US 23.141.0.0/24 Origin: 395350 RESERVED, ZZ 23.141.0.0/24 Transit: 11426 TWC-11426-CAROLINAS, US 23.147.240.0/24 Origin: 32302 RESERVED, ZZ 23.147.240.0/24 Transit: 32787 PROLEXIC-TECHNOLOGIES-DDOS-MITIGATION-NE 23.152.48.0/24 Origin: 46167 RESERVED, ZZ 23.152.48.0/24 Transit: 7018 ATT-INTERNET4, US Complete listing at https://bgp.nsrc.org/REN/Singapore/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 /9:16 /10:41 /11:92 /12:299 /13:580 /14:1211 /15:2141 /16:13865 /17:8211 /18:13614 /19:24468 /20:43844 /21:51441 /22:111572 /23:101923 /24:609313 /25:0 /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 12479 6631 7716 UNI2-AS, ES 8151 6361 12164 UNINET, MX 11492 3532 4735 CABLEONE, US 39891 3489 4798 ALJAWWALSTC-AS, SA 6327 3426 3631 SHAW, CA 7155 2823 3864 VIASAT-SP-BACKBONE, US 22773 2496 3346 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2374 13586 AMAZON-02, US 30036 2237 2578 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2186 3499 Telmex Colombia S.A., CO Complete listing at https://bgp.nsrc.org/REN/Singapore/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:2379 2:1501 3:802 4:9 5:4688 6:162 7:6 8:1575 9:1 11:172 12:1359 13:445 14:2521 15:360 16:285 17:376 18:920 20:542 21:4 22:188 23:7519 24:2749 25:2 27:2766 29:19 31:3280 32:36 33:1 34:83 35:214 36:3032 37:4618 38:9207 39:910 40:170 41:4236 42:1934 43:2629 44:377 45:18609 46:5075 47:318 49:1936 50:1880 51:591 52:1569 54:321 55:1097 56:11 57:260 58:2209 59:1302 60:1167 61:2829 62:2924 63:1799 64:5445 65:2178 66:4624 67:3051 68:1126 69:3839 70:1077 71:629 72:2838 74:2779 75:1507 76:615 77:2695 78:1887 79:1693 80:2203 81:2067 82:3097 83:1450 84:1855 85:3422 86:1070 87:2122 88:1286 89:4395 90:776 91:8367 92:2712 93:2910 94:4045 95:4330 96:1417 97:312 98:978 99:689 100:72 101:1413 102:3868 103:32627 104:5058 105:767 106:1034 107:2651 108:1247 109:4066 110:2253 111:3284 112:2103 113:1810 114:1978 115:2174 116:2067 117:2525 118:2871 119:1924 120:1962 121:1375 122:2761 123:2174 124:1626 125:2889 126:91 128:1581 129:955 130:1303 131:1975 132:773 133:449 134:1534 135:333 136:1351 137:1120 138:2878 139:1591 140:1578 141:1505 142:1910 143:1791 144:1147 145:509 146:2180 147:2107 148:2692 149:2886 150:1262 151:1945 152:2083 153:502 154:8013 155:1984 156:3329 157:1917 158:1325 159:2474 160:3845 161:1844 162:3771 163:2177 164:1727 165:2219 166:1489 167:1919 168:4302 169:789 170:5094 171:1001 172:4428 173:3306 174:915 175:1305 176:3700 177:4667 178:3647 179:2294 180:2744 181:4077 182:3444 183:2154 184:2055 185:21564 186:5147 187:4488 188:4238 189:4268 190:9531 191:1468 192:11261 193:9460 194:7796 195:5534 196:3264 197:3662 198:6069 199:8524 200:8060 201:6333 202:10249 203:10628 204:4539 205:3598 206:4442 207:3472 208:4220 209:5117 210:4550 211:2534 212:4561 213:3724 214:1026 215:48 216:6726 217:3118 218:1346 219:395 220:2091 221:1104 222:722 223:2411 End of report