[REN-BGP-stats-all] IPv4 R&E Routing Table Report - CERNET (R&E) view
REN Routing Table Report
cscora at bgp.nsrc.org
Wed Aug 14 20:10:38 UTC 2024
IPv4 R&E Routing Table Report 20:10 GMT Wed 14 Aug, 2024
IPv4 BGP Table (R&E) as seen at CERNET.
Report Website: https://bgp.nsrc.org/REN
Detailed Analysis: https://bgp.nsrc.org/REN/CERNET/
Analysis Summary
----------------
BGP routing table entries examined: 17462
Prefixes after maximum aggregation (per Origin AS): 9874
Deaggregation factor: 1.77
Unique aggregates announced (without unneeded subnets): 10987
Number of IPv4 prefixes with a valid ROA: 6011
Number of IPv4 prefixes with an invalid ROA: 6
Number of IPv4 prefixes with no ROA: 11445
Total ASes present in the Internet Routing Table: 2623
Prefixes per ASN: 6.66
Origin-only ASes present in the Internet Routing Table: 2278
Origin ASes announcing only one prefix: 1011
Transit ASes present in the Internet Routing Table: 345
Transit-only ASes present in the Internet Routing Table: 65
Paths with bogon ASNs present in the IPv4 Routing Table: 0
Average AS path length visible in the Internet Routing Table: 4.3
Max AS path length visible: 16
Max AS path prepend of ASN (395156) 12
Prefixes from unregistered ASNs in the Routing Table: 1
Number of instances of unregistered ASNs: 1
Number of 32-bit ASNs allocated by the RIRs: 45180
Number of 32-bit ASNs visible in the Routing Table: 620
Prefixes from 32-bit ASNs in the Routing Table: 1769
Number of bogon 32-bit ASNs visible in the Routing Table: 0
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 1
Number of addresses announced to Internet: 191811856
Equivalent to 11 /8s, 110 /16s and 209 /24s
Percentage of available address space announced: 5.2
Percentage of allocated address space announced: 5.2
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: 2217
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 3864
Total APNIC prefixes after maximum aggregation: 2072
APNIC Deaggregation factor: 1.86
Prefixes being announced from the APNIC address blocks: 3865
Unique aggregates announced from the APNIC address blocks: 2446
APNIC Region origin ASes present in the Internet Routing Table: 511
APNIC Prefixes per ASN: 7.56
APNIC Region origin ASes announcing only one prefix: 222
APNIC Region transit ASes present in the Internet Routing Table: 48
Average APNIC Region AS path length visible: 4.5
Max APNIC Region AS path length visible: 12
Number of APNIC region 32-bit ASNs visible in the Routing Table: 201
Number of APNIC addresses announced to Internet: 44623872
Equivalent to 2 /8s, 168 /16s and 232 /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, 131072-153913
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: 7556
Total ARIN prefixes after maximum aggregation: 4277
ARIN Deaggregation factor: 1.77
Prefixes being announced from the ARIN address blocks: 7568
Unique aggregates announced from the ARIN address blocks: 4744
ARIN Region origin ASes present in the Internet Routing Table: 1199
ARIN Prefixes per ASN: 6.31
ARIN Region origin ASes announcing only one prefix: 429
ARIN Region transit ASes present in the Internet Routing Table: 151
Average ARIN Region AS path length visible: 4.4
Max ARIN Region AS path length visible: 16
Number of ARIN region 32-bit ASNs visible in the Routing Table: 198
Number of ARIN addresses announced to Internet: 83200768
Equivalent to 4 /8s, 245 /16s and 139 /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, 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: 3551
Total RIPE prefixes after maximum aggregation: 2842
RIPE Deaggregation factor: 1.25
Prefixes being announced from the RIPE address blocks: 3539
Unique aggregates announced from the RIPE address blocks: 2891
RIPE Region origin ASes present in the Internet Routing Table: 664
RIPE Prefixes per ASN: 5.33
RIPE Region origin ASes announcing only one prefix: 293
RIPE Region transit ASes present in the Internet Routing Table: 104
Average RIPE Region AS path length visible: 3.9
Max RIPE Region AS path length visible: 13
Number of RIPE region 32-bit ASNs visible in the Routing Table: 149
Number of RIPE addresses announced to Internet: 57473808
Equivalent to 3 /8s, 108 /16s and 251 /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,
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: 1380
Total LACNIC prefixes after maximum aggregation: 538
LACNIC Deaggregation factor: 2.57
Prefixes being announced from the LACNIC address blocks: 1379
Unique aggregates announced from the LACNIC address blocks: 720
LACNIC Region origin ASes present in the Internet Routing Table: 157
LACNIC Prefixes per ASN: 8.78
LACNIC Region origin ASes announcing only one prefix: 56
LACNIC Region transit ASes present in the Internet Routing Table: 22
Average LACNIC Region AS path length visible: 5.2
Max LACNIC Region AS path length visible: 14
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 63
Number of LACNIC addresses announced to Internet: 4193792
Equivalent to 0 /8s, 63 /16s and 254 /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: 1110
Total AfriNIC prefixes after maximum aggregation: 144
AfriNIC Deaggregation factor: 7.71
Prefixes being announced from the AfriNIC address blocks: 1110
Unique aggregates announced from the AfriNIC address blocks: 185
AfriNIC Region origin ASes present in the Internet Routing Table: 26
AfriNIC Prefixes per ASN: 42.69
AfriNIC Region origin ASes announcing only one prefix: 11
AfriNIC Region transit ASes present in the Internet Routing Table: 6
Average AfriNIC Region AS path length visible: 3.7
Max AfriNIC Region AS path length visible: 7
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 9
Number of AfriNIC addresses announced to Internet: 2319360
Equivalent to 0 /8s, 35 /16s and 100 /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
2907 584 2152 460 SINET-AS Research Organization of Informa
1237 190 74 145 KREONET-AS-KR KISTI, KR
58647 180 18 2 KAGAWAU-AS Kagawa University, JP
7575 172 329 115 AARNET-AS-AP Australian Academic and Rese
55824 132 19 20 NKN-CORE-NW NKN Core Network, IN
4538 113 4176 70 ERX-CERNET-BKB China Education and Resear
4762 75 4 1 MAHIDOL-BORDER-AS Mahidol University, Tha
4621 68 37 10 UNINET-AS-AP UNINET-, TH
23570 59 5 11 INCHEON-AS-KR UNIVERSITY OF INCHEON, KR
2697 58 4 34 ERX-ERNET-AS Education and Research Netwo
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-ASnet-APNIC
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
2152 194 507 97 CENIC-2152, US
5786 192 16 1 UPRENET, PR
376 191 162 148 RISQ-AS, CA
2920 175 34 7 LACOE, US
18558 140 18 4 NETBLK-RCOEK, US
81 133 517 33 NCREN, US
23024 96 7 21 OCDE, US
21976 87 50 17 NJEDGE-NET, US
237 86 543 51 MERIT-AS-14, US
1736 79 16 1 MU-AS, US
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-ASnet-ARIN
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
680 283 1899 250 DFN Verein zur Foerderung eines Deutschen
786 184 1767 181 JANET Jisc Services Limited, GB
8895 136 24 5 ISU Internet Services Unit ISU, SA
559 113 533 103 SWITCH Peering requests: peering at switch.c
1103 95 1502 85 SURFNET-NL SURFnet, The Netherlands, NL
2614 90 26 70 ROEDUNET, RO
137 82 677 77 ASGARR Consortium GARR, IT
1930 79 88 74 RCCN Fundacao para a Ciencia e a Tecnolog
553 78 462 78 BELWUE BelWue-Koordination, DE
3267 76 26 66 NIKS, RU
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-ASnet-RIPE
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
1916 159 176 42 Rede Nacional de Ensino e Pesquisa, BR
28391 153 10 67 Universidad Juarez Autonoma de Tabasco, M
11340 109 25 52 Red Universitaria Nacional, CL
271640 67 8 1 UNIVERSIDADE FEDERAL DE VICOSA, BR
61468 49 5 17 CEDIA, EC
19611 48 17 2 Associacao Antonio Vieira - Unisinos, BR
4270 46 16 1 Red de Interconexion Universitaria, AR
2715 45 99 34 Fundacao Carlos Chagas Filho de Amparo a
28614 38 2 2 Fundacao Universidade Regional de Blumena
3596 37 8 4 Universidad Autonoma Metropolitana, MX
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-ASnet-LACNIC
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
36914 532 82 3 KENET-AS, KE
2018 381 319 71 TENET-1, ZA
8094 47 48 18 PUKNET, ZA
37182 38 8 1 TERNET, TZ
327700 33 16 1 MoRENet, MZ
6879 24 2 9 ENSTINET-, EG
37501 11 49 6 UOFS, ZA
36982 8 33 8 UCT, ZA
37215 7 8 1 MAREN, MW
37654 6 1 6 RwEdNet-AS, RW
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-ASnet-AFRINIC
Global Per AS prefix count summary
----------------------------------
ASN No of nets /20 equiv MaxAgg Description
2907 584 2152 460 SINET-AS Research Organization of Informa
36914 532 82 3 KENET-AS, KE
2018 381 319 71 TENET-1, ZA
680 283 1899 250 DFN Verein zur Foerderung eines Deutschen
2152 194 507 97 CENIC-2152, US
5786 192 16 1 UPRENET, PR
376 191 162 148 RISQ-AS, CA
1237 190 74 145 KREONET-AS-KR KISTI, KR
786 184 1767 181 JANET Jisc Services Limited, GB
58647 180 18 2 KAGAWAU-AS Kagawa University, JP
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-ASnet
Global Per AS Maximum Aggregation summary
-----------------------------------------
ASN No of nets Net Savings Description
36914 532 529 KENET-AS, KE
2018 381 310 TENET-1, ZA
5786 192 191 UPRENET, PR
58647 180 178 KAGAWAU-AS Kagawa University, JP
2920 175 168 LACOE, US
18558 140 136 NETBLK-RCOEK, US
8895 136 131 ISU Internet Services Unit ISU, SA
1916 159 117 Rede Nacional de Ensino e Pesquisa, BR
55824 132 112 NKN-CORE-NW NKN Core Network, IN
81 133 100 NCREN, US
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-CIDRnet
List of Unregistered Origin ASNs (Global)
-----------------------------------------
Bad AS Designation Net Originated Transit AS Transit AS Name
26971 UNALLOCATED 129.111.0.0/16 276 OTS-AS-276, US
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-badAS
Advertised Unallocated Addresses
--------------------------------
Unassigned Network ASN Information AS Name
192.31.196.0/24 Origin: 112 RESERVED, ZZ
192.31.196.0/24 Transit: 7500 M-ROOT-DNS WIDE Project, JP
Complete listing at https://bgp.nsrc.org/REN/CERNET/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 /8:0 /9:1 /10:1 /11:1 /12:10
/13:18 /14:31 /15:113 /16:1907 /17:408 /18:422
/19:534 /20:782 /21:771 /22:1313 /23:1376 /24:9766
/25:6 /26:1 /27:0 /28:1 /29:0 /30:0
/31:0 /32:0
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
36914 509 532 KENET-AS, KE
8895 131 136 ISU Internet Services Unit ISU, SA
23024 38 96 OCDE, US
37182 37 38 TERNET, TZ
32440 36 63 LONI, US
3267 35 76 NIKS, RU
28614 32 38 Fundacao Universidade Regional de Blumenau, BR
46115 32 35 LUTHER, US
200521 32 55 SEAP-AGE, ES
25977 30 44 HCCS, US
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:2 5:15 8:2 12:1 14:91 23:5
24:3 31:1 35:3 37:8 38:10 40:1
41:251 44:5 45:46 46:5 47:1 49:10
50:3 52:1 59:18 61:3 62:7 63:33
64:42 65:1 66:43 67:42 68:12 69:18
70:2 71:1 72:7 74:53 76:41 77:10
78:3 79:10 80:13 81:24 82:6 83:7
84:7 85:33 86:5 87:1 89:11 91:48
92:2 93:13 94:2 95:2 96:5 97:2
98:2 102:2 103:269 104:78 108:8 109:6
111:16 113:2 114:24 116:8 117:61 118:33
119:1 121:18 122:8 123:8 125:2 128:84
129:33 130:96 131:61 132:67 133:154 134:103
136:192 137:51 138:58 139:6 140:32 141:3
142:25 143:24 144:23 145:2 146:135 147:60
148:193 149:13 150:36 151:9 152:135 153:15
154:29 155:63 156:133 157:21 158:34 159:22
160:30 161:16 162:21 163:59 164:14 165:47
166:1 167:9 168:119 169:6 170:89 171:1
172:2 173:6 175:18 176:8 177:6 179:13
180:15 181:1 182:1 184:3 185:49 186:3
187:20 188:13 189:3 190:19 191:13 192:1294
193:265 194:138 195:74 196:150 197:317 198:448
199:239 200:289 201:38 202:538 203:413 204:357
205:122 206:205 207:225 208:66 209:103 210:125
211:14 212:162 213:6 216:89 217:9 218:3
219:5 220:17 222:1
End of report
More information about the ren-bgp-stats-all
mailing list